/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:50:53,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:50:53,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:50:53,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:50:53,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:50:53,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:50:53,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:50:53,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:50:53,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:50:53,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:50:53,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:50:53,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:50:53,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:50:53,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:50:53,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:50:53,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:50:53,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:50:53,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:50:53,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:50:53,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:50:53,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:50:53,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:50:53,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:50:53,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:50:53,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:50:53,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:50:53,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:50:53,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:50:53,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:50:53,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:50:53,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:50:53,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:50:53,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:50:53,711 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:50:53,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:50:53,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:50:53,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:50:53,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:50:53,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:50:53,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:50:53,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:50:53,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:50:53,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:50:53,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:50:53,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:50:53,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:50:53,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:50:53,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:50:53,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:50:53,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:50:53,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:50:53,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:50:53,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:50:53,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:50:53,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:50:53,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:50:53,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:50:53,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:50:53,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:50:54,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:50:54,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:50:54,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:50:54,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:50:54,044 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:50:54,045 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_1-2.c [2020-07-17 22:50:54,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9b9b10c/c53b8e4004a243f79dd7b6f063035e81/FLAGd1d998ff9 [2020-07-17 22:50:54,610 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:50:54,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_1-2.c [2020-07-17 22:50:54,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9b9b10c/c53b8e4004a243f79dd7b6f063035e81/FLAGd1d998ff9 [2020-07-17 22:50:54,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9b9b10c/c53b8e4004a243f79dd7b6f063035e81 [2020-07-17 22:50:54,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:50:54,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:50:54,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:54,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:50:54,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:50:54,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:54" (1/1) ... [2020-07-17 22:50:54,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a382e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:54, skipping insertion in model container [2020-07-17 22:50:54,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:54" (1/1) ... [2020-07-17 22:50:54,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:50:54,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:50:55,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:55,158 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:50:55,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:55,201 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:50:55,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:55 WrapperNode [2020-07-17 22:50:55,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:55,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:50:55,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:50:55,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:50:55,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:55" (1/1) ... [2020-07-17 22:50:55,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:55" (1/1) ... [2020-07-17 22:50:55,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:55" (1/1) ... [2020-07-17 22:50:55,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:55" (1/1) ... [2020-07-17 22:50:55,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:55" (1/1) ... [2020-07-17 22:50:55,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:55" (1/1) ... [2020-07-17 22:50:55,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:55" (1/1) ... [2020-07-17 22:50:55,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:50:55,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:50:55,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:50:55,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:50:55,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:50:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:50:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:50:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:50:55,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:50:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:50:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:50:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:50:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 22:50:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:50:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:50:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:50:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:50:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:50:55,638 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:50:55,638 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 22:50:55,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:55 BoogieIcfgContainer [2020-07-17 22:50:55,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:50:55,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:50:55,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:50:55,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:50:55,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:50:54" (1/3) ... [2020-07-17 22:50:55,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dbd3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:55, skipping insertion in model container [2020-07-17 22:50:55,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:55" (2/3) ... [2020-07-17 22:50:55,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dbd3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:55, skipping insertion in model container [2020-07-17 22:50:55,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:55" (3/3) ... [2020-07-17 22:50:55,653 INFO L109 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2020-07-17 22:50:55,668 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:50:55,677 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:50:55,695 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:50:55,720 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:50:55,720 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:50:55,720 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:50:55,720 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:50:55,721 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:50:55,721 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:50:55,721 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:50:55,721 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:50:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-17 22:50:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 22:50:55,748 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:55,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:55,749 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:55,756 INFO L82 PathProgramCache]: Analyzing trace with hash -267856937, now seen corresponding path program 1 times [2020-07-17 22:50:55,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:55,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331629948] [2020-07-17 22:50:55,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:55,984 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {24#true} is VALID [2020-07-17 22:50:55,985 INFO L280 TraceCheckUtils]: 1: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-17 22:50:55,985 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} #35#return; {24#true} is VALID [2020-07-17 22:50:55,989 INFO L263 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {29#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:50:55,989 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {24#true} is VALID [2020-07-17 22:50:55,989 INFO L280 TraceCheckUtils]: 2: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-17 22:50:55,990 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {24#true} {24#true} #35#return; {24#true} is VALID [2020-07-17 22:50:55,990 INFO L263 TraceCheckUtils]: 4: Hoare triple {24#true} call #t~ret2 := main(); {24#true} is VALID [2020-07-17 22:50:55,991 INFO L280 TraceCheckUtils]: 5: Hoare triple {24#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(8192);havoc ~i~0;~i~0 := 0; {24#true} is VALID [2020-07-17 22:50:55,992 INFO L280 TraceCheckUtils]: 6: Hoare triple {24#true} assume !true; {25#false} is VALID [2020-07-17 22:50:55,993 INFO L280 TraceCheckUtils]: 7: Hoare triple {25#false} call #t~mem1 := read~int(~#A~0.base, 4092 + ~#A~0.offset, 4); {25#false} is VALID [2020-07-17 22:50:55,993 INFO L263 TraceCheckUtils]: 8: Hoare triple {25#false} call __VERIFIER_assert((if 1023 == #t~mem1 then 1 else 0)); {25#false} is VALID [2020-07-17 22:50:55,993 INFO L280 TraceCheckUtils]: 9: Hoare triple {25#false} ~cond := #in~cond; {25#false} is VALID [2020-07-17 22:50:55,994 INFO L280 TraceCheckUtils]: 10: Hoare triple {25#false} assume 0 == ~cond; {25#false} is VALID [2020-07-17 22:50:55,994 INFO L280 TraceCheckUtils]: 11: Hoare triple {25#false} assume !false; {25#false} is VALID [2020-07-17 22:50:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:50:55,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331629948] [2020-07-17 22:50:55,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:50:55,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 22:50:55,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935733827] [2020-07-17 22:50:56,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-17 22:50:56,007 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:56,011 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-17 22:50:56,057 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:56,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 22:50:56,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:56,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 22:50:56,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 22:50:56,068 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2020-07-17 22:50:56,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:56,233 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-07-17 22:50:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 22:50:56,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-17 22:50:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:50:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:50:56,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2020-07-17 22:50:56,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:50:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2020-07-17 22:50:56,250 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 37 transitions. [2020-07-17 22:50:56,320 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:56,330 INFO L225 Difference]: With dead ends: 34 [2020-07-17 22:50:56,331 INFO L226 Difference]: Without dead ends: 14 [2020-07-17 22:50:56,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 22:50:56,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-17 22:50:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-17 22:50:56,382 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:50:56,383 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2020-07-17 22:50:56,383 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-17 22:50:56,383 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-17 22:50:56,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:56,386 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-17 22:50:56,387 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-17 22:50:56,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:56,387 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:56,388 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-17 22:50:56,388 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-17 22:50:56,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:56,391 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-17 22:50:56,391 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-17 22:50:56,392 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:56,392 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:56,392 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:50:56,392 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:50:56,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-17 22:50:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-17 22:50:56,396 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-17 22:50:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:50:56,397 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-17 22:50:56,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 22:50:56,397 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-17 22:50:56,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 22:50:56,398 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:56,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:56,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:50:56,398 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:56,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:56,399 INFO L82 PathProgramCache]: Analyzing trace with hash -439631843, now seen corresponding path program 1 times [2020-07-17 22:50:56,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:56,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230081306] [2020-07-17 22:50:56,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:56,513 INFO L280 TraceCheckUtils]: 0: Hoare triple {130#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {124#true} is VALID [2020-07-17 22:50:56,514 INFO L280 TraceCheckUtils]: 1: Hoare triple {124#true} assume true; {124#true} is VALID [2020-07-17 22:50:56,515 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {124#true} {124#true} #35#return; {124#true} is VALID [2020-07-17 22:50:56,516 INFO L263 TraceCheckUtils]: 0: Hoare triple {124#true} call ULTIMATE.init(); {130#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:50:56,517 INFO L280 TraceCheckUtils]: 1: Hoare triple {130#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {124#true} is VALID [2020-07-17 22:50:56,517 INFO L280 TraceCheckUtils]: 2: Hoare triple {124#true} assume true; {124#true} is VALID [2020-07-17 22:50:56,518 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {124#true} {124#true} #35#return; {124#true} is VALID [2020-07-17 22:50:56,518 INFO L263 TraceCheckUtils]: 4: Hoare triple {124#true} call #t~ret2 := main(); {124#true} is VALID [2020-07-17 22:50:56,520 INFO L280 TraceCheckUtils]: 5: Hoare triple {124#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(8192);havoc ~i~0;~i~0 := 0; {129#(= 0 main_~i~0)} is VALID [2020-07-17 22:50:56,522 INFO L280 TraceCheckUtils]: 6: Hoare triple {129#(= 0 main_~i~0)} assume !(~i~0 < 1024); {125#false} is VALID [2020-07-17 22:50:56,523 INFO L280 TraceCheckUtils]: 7: Hoare triple {125#false} call #t~mem1 := read~int(~#A~0.base, 4092 + ~#A~0.offset, 4); {125#false} is VALID [2020-07-17 22:50:56,523 INFO L263 TraceCheckUtils]: 8: Hoare triple {125#false} call __VERIFIER_assert((if 1023 == #t~mem1 then 1 else 0)); {125#false} is VALID [2020-07-17 22:50:56,524 INFO L280 TraceCheckUtils]: 9: Hoare triple {125#false} ~cond := #in~cond; {125#false} is VALID [2020-07-17 22:50:56,524 INFO L280 TraceCheckUtils]: 10: Hoare triple {125#false} assume 0 == ~cond; {125#false} is VALID [2020-07-17 22:50:56,524 INFO L280 TraceCheckUtils]: 11: Hoare triple {125#false} assume !false; {125#false} is VALID [2020-07-17 22:50:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:50:56,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230081306] [2020-07-17 22:50:56,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:50:56,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 22:50:56,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023662059] [2020-07-17 22:50:56,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-17 22:50:56,529 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:56,529 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-17 22:50:56,554 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:56,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 22:50:56,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:56,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 22:50:56,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:50:56,556 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2020-07-17 22:50:56,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:56,657 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-07-17 22:50:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 22:50:56,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-17 22:50:56,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:50:56,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:50:56,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2020-07-17 22:50:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:50:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2020-07-17 22:50:56,663 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 22 transitions. [2020-07-17 22:50:56,702 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:56,703 INFO L225 Difference]: With dead ends: 22 [2020-07-17 22:50:56,704 INFO L226 Difference]: Without dead ends: 16 [2020-07-17 22:50:56,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:50:56,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-17 22:50:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-07-17 22:50:56,721 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:50:56,722 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand 15 states. [2020-07-17 22:50:56,722 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 15 states. [2020-07-17 22:50:56,722 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 15 states. [2020-07-17 22:50:56,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:56,724 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-07-17 22:50:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-07-17 22:50:56,725 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:56,725 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:56,726 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 16 states. [2020-07-17 22:50:56,745 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 16 states. [2020-07-17 22:50:56,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:56,747 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-07-17 22:50:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-07-17 22:50:56,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:56,748 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:56,748 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:50:56,748 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:50:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-17 22:50:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-17 22:50:56,750 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-07-17 22:50:56,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:50:56,751 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-17 22:50:56,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 22:50:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-17 22:50:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 22:50:56,752 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:56,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:56,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:50:56,752 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:56,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:56,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1874839487, now seen corresponding path program 1 times [2020-07-17 22:50:56,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:56,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146410260] [2020-07-17 22:50:56,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:56,832 INFO L280 TraceCheckUtils]: 0: Hoare triple {227#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {220#true} is VALID [2020-07-17 22:50:56,833 INFO L280 TraceCheckUtils]: 1: Hoare triple {220#true} assume true; {220#true} is VALID [2020-07-17 22:50:56,833 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {220#true} {220#true} #35#return; {220#true} is VALID [2020-07-17 22:50:56,834 INFO L263 TraceCheckUtils]: 0: Hoare triple {220#true} call ULTIMATE.init(); {227#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:50:56,835 INFO L280 TraceCheckUtils]: 1: Hoare triple {227#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {220#true} is VALID [2020-07-17 22:50:56,835 INFO L280 TraceCheckUtils]: 2: Hoare triple {220#true} assume true; {220#true} is VALID [2020-07-17 22:50:56,836 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {220#true} {220#true} #35#return; {220#true} is VALID [2020-07-17 22:50:56,836 INFO L263 TraceCheckUtils]: 4: Hoare triple {220#true} call #t~ret2 := main(); {220#true} is VALID [2020-07-17 22:50:56,837 INFO L280 TraceCheckUtils]: 5: Hoare triple {220#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(8192);havoc ~i~0;~i~0 := 0; {225#(= 0 main_~i~0)} is VALID [2020-07-17 22:50:56,838 INFO L280 TraceCheckUtils]: 6: Hoare triple {225#(= 0 main_~i~0)} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {225#(= 0 main_~i~0)} is VALID [2020-07-17 22:50:56,839 INFO L280 TraceCheckUtils]: 7: Hoare triple {225#(= 0 main_~i~0)} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {226#(<= main_~i~0 1)} is VALID [2020-07-17 22:50:56,840 INFO L280 TraceCheckUtils]: 8: Hoare triple {226#(<= main_~i~0 1)} assume !(~i~0 < 1024); {221#false} is VALID [2020-07-17 22:50:56,841 INFO L280 TraceCheckUtils]: 9: Hoare triple {221#false} call #t~mem1 := read~int(~#A~0.base, 4092 + ~#A~0.offset, 4); {221#false} is VALID [2020-07-17 22:50:56,841 INFO L263 TraceCheckUtils]: 10: Hoare triple {221#false} call __VERIFIER_assert((if 1023 == #t~mem1 then 1 else 0)); {221#false} is VALID [2020-07-17 22:50:56,841 INFO L280 TraceCheckUtils]: 11: Hoare triple {221#false} ~cond := #in~cond; {221#false} is VALID [2020-07-17 22:50:56,842 INFO L280 TraceCheckUtils]: 12: Hoare triple {221#false} assume 0 == ~cond; {221#false} is VALID [2020-07-17 22:50:56,842 INFO L280 TraceCheckUtils]: 13: Hoare triple {221#false} assume !false; {221#false} is VALID [2020-07-17 22:50:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:50:56,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146410260] [2020-07-17 22:50:56,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318303853] [2020-07-17 22:50:56,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:50:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:56,895 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-17 22:50:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:56,913 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 22:50:57,004 INFO L263 TraceCheckUtils]: 0: Hoare triple {220#true} call ULTIMATE.init(); {220#true} is VALID [2020-07-17 22:50:57,005 INFO L280 TraceCheckUtils]: 1: Hoare triple {220#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {220#true} is VALID [2020-07-17 22:50:57,005 INFO L280 TraceCheckUtils]: 2: Hoare triple {220#true} assume true; {220#true} is VALID [2020-07-17 22:50:57,005 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {220#true} {220#true} #35#return; {220#true} is VALID [2020-07-17 22:50:57,006 INFO L263 TraceCheckUtils]: 4: Hoare triple {220#true} call #t~ret2 := main(); {220#true} is VALID [2020-07-17 22:50:57,007 INFO L280 TraceCheckUtils]: 5: Hoare triple {220#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(8192);havoc ~i~0;~i~0 := 0; {246#(<= main_~i~0 0)} is VALID [2020-07-17 22:50:57,008 INFO L280 TraceCheckUtils]: 6: Hoare triple {246#(<= main_~i~0 0)} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {246#(<= main_~i~0 0)} is VALID [2020-07-17 22:50:57,009 INFO L280 TraceCheckUtils]: 7: Hoare triple {246#(<= main_~i~0 0)} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {226#(<= main_~i~0 1)} is VALID [2020-07-17 22:50:57,010 INFO L280 TraceCheckUtils]: 8: Hoare triple {226#(<= main_~i~0 1)} assume !(~i~0 < 1024); {221#false} is VALID [2020-07-17 22:50:57,011 INFO L280 TraceCheckUtils]: 9: Hoare triple {221#false} call #t~mem1 := read~int(~#A~0.base, 4092 + ~#A~0.offset, 4); {221#false} is VALID [2020-07-17 22:50:57,011 INFO L263 TraceCheckUtils]: 10: Hoare triple {221#false} call __VERIFIER_assert((if 1023 == #t~mem1 then 1 else 0)); {221#false} is VALID [2020-07-17 22:50:57,011 INFO L280 TraceCheckUtils]: 11: Hoare triple {221#false} ~cond := #in~cond; {221#false} is VALID [2020-07-17 22:50:57,012 INFO L280 TraceCheckUtils]: 12: Hoare triple {221#false} assume 0 == ~cond; {221#false} is VALID [2020-07-17 22:50:57,012 INFO L280 TraceCheckUtils]: 13: Hoare triple {221#false} assume !false; {221#false} is VALID [2020-07-17 22:50:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:50:57,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 22:50:57,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-07-17 22:50:57,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680106447] [2020-07-17 22:50:57,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-07-17 22:50:57,015 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:57,015 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-17 22:50:57,038 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:57,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 22:50:57,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:57,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 22:50:57,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:50:57,040 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2020-07-17 22:50:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:57,143 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-07-17 22:50:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 22:50:57,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-07-17 22:50:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:50:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:50:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2020-07-17 22:50:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:50:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2020-07-17 22:50:57,148 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 24 transitions. [2020-07-17 22:50:57,180 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:57,182 INFO L225 Difference]: With dead ends: 24 [2020-07-17 22:50:57,182 INFO L226 Difference]: Without dead ends: 18 [2020-07-17 22:50:57,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:50:57,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-17 22:50:57,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-07-17 22:50:57,196 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:50:57,197 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 17 states. [2020-07-17 22:50:57,197 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 17 states. [2020-07-17 22:50:57,197 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 17 states. [2020-07-17 22:50:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:57,199 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-17 22:50:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-17 22:50:57,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:57,200 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:57,200 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 18 states. [2020-07-17 22:50:57,200 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 18 states. [2020-07-17 22:50:57,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:57,202 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-17 22:50:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-17 22:50:57,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:57,203 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:57,203 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:50:57,203 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:50:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-17 22:50:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-17 22:50:57,205 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-07-17 22:50:57,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:50:57,205 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-17 22:50:57,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 22:50:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-17 22:50:57,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-17 22:50:57,206 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:57,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:57,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-17 22:50:57,419 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:57,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:57,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1288728289, now seen corresponding path program 2 times [2020-07-17 22:50:57,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:57,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024602869] [2020-07-17 22:50:57,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:57,526 INFO L280 TraceCheckUtils]: 0: Hoare triple {375#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {367#true} is VALID [2020-07-17 22:50:57,527 INFO L280 TraceCheckUtils]: 1: Hoare triple {367#true} assume true; {367#true} is VALID [2020-07-17 22:50:57,527 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {367#true} {367#true} #35#return; {367#true} is VALID [2020-07-17 22:50:57,529 INFO L263 TraceCheckUtils]: 0: Hoare triple {367#true} call ULTIMATE.init(); {375#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:50:57,529 INFO L280 TraceCheckUtils]: 1: Hoare triple {375#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {367#true} is VALID [2020-07-17 22:50:57,529 INFO L280 TraceCheckUtils]: 2: Hoare triple {367#true} assume true; {367#true} is VALID [2020-07-17 22:50:57,530 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {367#true} {367#true} #35#return; {367#true} is VALID [2020-07-17 22:50:57,530 INFO L263 TraceCheckUtils]: 4: Hoare triple {367#true} call #t~ret2 := main(); {367#true} is VALID [2020-07-17 22:50:57,531 INFO L280 TraceCheckUtils]: 5: Hoare triple {367#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(8192);havoc ~i~0;~i~0 := 0; {372#(= 0 main_~i~0)} is VALID [2020-07-17 22:50:57,532 INFO L280 TraceCheckUtils]: 6: Hoare triple {372#(= 0 main_~i~0)} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {372#(= 0 main_~i~0)} is VALID [2020-07-17 22:50:57,533 INFO L280 TraceCheckUtils]: 7: Hoare triple {372#(= 0 main_~i~0)} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {373#(<= main_~i~0 1)} is VALID [2020-07-17 22:50:57,534 INFO L280 TraceCheckUtils]: 8: Hoare triple {373#(<= main_~i~0 1)} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {373#(<= main_~i~0 1)} is VALID [2020-07-17 22:50:57,535 INFO L280 TraceCheckUtils]: 9: Hoare triple {373#(<= main_~i~0 1)} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {374#(<= main_~i~0 2)} is VALID [2020-07-17 22:50:57,536 INFO L280 TraceCheckUtils]: 10: Hoare triple {374#(<= main_~i~0 2)} assume !(~i~0 < 1024); {368#false} is VALID [2020-07-17 22:50:57,537 INFO L280 TraceCheckUtils]: 11: Hoare triple {368#false} call #t~mem1 := read~int(~#A~0.base, 4092 + ~#A~0.offset, 4); {368#false} is VALID [2020-07-17 22:50:57,537 INFO L263 TraceCheckUtils]: 12: Hoare triple {368#false} call __VERIFIER_assert((if 1023 == #t~mem1 then 1 else 0)); {368#false} is VALID [2020-07-17 22:50:57,537 INFO L280 TraceCheckUtils]: 13: Hoare triple {368#false} ~cond := #in~cond; {368#false} is VALID [2020-07-17 22:50:57,538 INFO L280 TraceCheckUtils]: 14: Hoare triple {368#false} assume 0 == ~cond; {368#false} is VALID [2020-07-17 22:50:57,538 INFO L280 TraceCheckUtils]: 15: Hoare triple {368#false} assume !false; {368#false} is VALID [2020-07-17 22:50:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:50:57,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024602869] [2020-07-17 22:50:57,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594397966] [2020-07-17 22:50:57,540 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:50:57,574 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-17 22:50:57,574 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 22:50:57,575 INFO L264 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-17 22:50:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:57,584 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 22:50:57,635 INFO L263 TraceCheckUtils]: 0: Hoare triple {367#true} call ULTIMATE.init(); {367#true} is VALID [2020-07-17 22:50:57,635 INFO L280 TraceCheckUtils]: 1: Hoare triple {367#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {367#true} is VALID [2020-07-17 22:50:57,636 INFO L280 TraceCheckUtils]: 2: Hoare triple {367#true} assume true; {367#true} is VALID [2020-07-17 22:50:57,636 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {367#true} {367#true} #35#return; {367#true} is VALID [2020-07-17 22:50:57,636 INFO L263 TraceCheckUtils]: 4: Hoare triple {367#true} call #t~ret2 := main(); {367#true} is VALID [2020-07-17 22:50:57,638 INFO L280 TraceCheckUtils]: 5: Hoare triple {367#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(8192);havoc ~i~0;~i~0 := 0; {394#(<= main_~i~0 0)} is VALID [2020-07-17 22:50:57,639 INFO L280 TraceCheckUtils]: 6: Hoare triple {394#(<= main_~i~0 0)} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {394#(<= main_~i~0 0)} is VALID [2020-07-17 22:50:57,641 INFO L280 TraceCheckUtils]: 7: Hoare triple {394#(<= main_~i~0 0)} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {373#(<= main_~i~0 1)} is VALID [2020-07-17 22:50:57,642 INFO L280 TraceCheckUtils]: 8: Hoare triple {373#(<= main_~i~0 1)} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {373#(<= main_~i~0 1)} is VALID [2020-07-17 22:50:57,644 INFO L280 TraceCheckUtils]: 9: Hoare triple {373#(<= main_~i~0 1)} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {374#(<= main_~i~0 2)} is VALID [2020-07-17 22:50:57,645 INFO L280 TraceCheckUtils]: 10: Hoare triple {374#(<= main_~i~0 2)} assume !(~i~0 < 1024); {368#false} is VALID [2020-07-17 22:50:57,645 INFO L280 TraceCheckUtils]: 11: Hoare triple {368#false} call #t~mem1 := read~int(~#A~0.base, 4092 + ~#A~0.offset, 4); {368#false} is VALID [2020-07-17 22:50:57,646 INFO L263 TraceCheckUtils]: 12: Hoare triple {368#false} call __VERIFIER_assert((if 1023 == #t~mem1 then 1 else 0)); {368#false} is VALID [2020-07-17 22:50:57,646 INFO L280 TraceCheckUtils]: 13: Hoare triple {368#false} ~cond := #in~cond; {368#false} is VALID [2020-07-17 22:50:57,646 INFO L280 TraceCheckUtils]: 14: Hoare triple {368#false} assume 0 == ~cond; {368#false} is VALID [2020-07-17 22:50:57,647 INFO L280 TraceCheckUtils]: 15: Hoare triple {368#false} assume !false; {368#false} is VALID [2020-07-17 22:50:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:50:57,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 22:50:57,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-07-17 22:50:57,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724621889] [2020-07-17 22:50:57,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-07-17 22:50:57,649 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:57,649 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-17 22:50:57,678 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:57,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 22:50:57,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:57,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 22:50:57,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-17 22:50:57,679 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 7 states. [2020-07-17 22:50:57,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:57,834 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-17 22:50:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 22:50:57,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-07-17 22:50:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:50:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-17 22:50:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 26 transitions. [2020-07-17 22:50:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-17 22:50:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 26 transitions. [2020-07-17 22:50:57,842 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 26 transitions. [2020-07-17 22:50:57,888 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:57,892 INFO L225 Difference]: With dead ends: 26 [2020-07-17 22:50:57,895 INFO L226 Difference]: Without dead ends: 20 [2020-07-17 22:50:57,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-17 22:50:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-17 22:50:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-07-17 22:50:57,947 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:50:57,947 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 19 states. [2020-07-17 22:50:57,947 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 19 states. [2020-07-17 22:50:57,948 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 19 states. [2020-07-17 22:50:57,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:57,950 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-07-17 22:50:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-17 22:50:57,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:57,952 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:57,952 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 20 states. [2020-07-17 22:50:57,953 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 20 states. [2020-07-17 22:50:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:57,956 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-07-17 22:50:57,956 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-17 22:50:57,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:57,958 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:57,958 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:50:57,959 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:50:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-17 22:50:57,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-17 22:50:57,962 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-07-17 22:50:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:50:57,962 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-17 22:50:57,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 22:50:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-17 22:50:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 22:50:57,963 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:57,964 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:58,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:50:58,178 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:58,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:58,179 INFO L82 PathProgramCache]: Analyzing trace with hash 676582787, now seen corresponding path program 3 times [2020-07-17 22:50:58,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:58,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160107539] [2020-07-17 22:50:58,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:58,287 INFO L280 TraceCheckUtils]: 0: Hoare triple {540#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {531#true} is VALID [2020-07-17 22:50:58,287 INFO L280 TraceCheckUtils]: 1: Hoare triple {531#true} assume true; {531#true} is VALID [2020-07-17 22:50:58,288 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {531#true} {531#true} #35#return; {531#true} is VALID [2020-07-17 22:50:58,289 INFO L263 TraceCheckUtils]: 0: Hoare triple {531#true} call ULTIMATE.init(); {540#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:50:58,290 INFO L280 TraceCheckUtils]: 1: Hoare triple {540#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {531#true} is VALID [2020-07-17 22:50:58,290 INFO L280 TraceCheckUtils]: 2: Hoare triple {531#true} assume true; {531#true} is VALID [2020-07-17 22:50:58,290 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {531#true} {531#true} #35#return; {531#true} is VALID [2020-07-17 22:50:58,290 INFO L263 TraceCheckUtils]: 4: Hoare triple {531#true} call #t~ret2 := main(); {531#true} is VALID [2020-07-17 22:50:58,294 INFO L280 TraceCheckUtils]: 5: Hoare triple {531#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(8192);havoc ~i~0;~i~0 := 0; {536#(= 0 main_~i~0)} is VALID [2020-07-17 22:50:58,295 INFO L280 TraceCheckUtils]: 6: Hoare triple {536#(= 0 main_~i~0)} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {536#(= 0 main_~i~0)} is VALID [2020-07-17 22:50:58,295 INFO L280 TraceCheckUtils]: 7: Hoare triple {536#(= 0 main_~i~0)} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {537#(<= main_~i~0 1)} is VALID [2020-07-17 22:50:58,296 INFO L280 TraceCheckUtils]: 8: Hoare triple {537#(<= main_~i~0 1)} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {537#(<= main_~i~0 1)} is VALID [2020-07-17 22:50:58,297 INFO L280 TraceCheckUtils]: 9: Hoare triple {537#(<= main_~i~0 1)} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {538#(<= main_~i~0 2)} is VALID [2020-07-17 22:50:58,297 INFO L280 TraceCheckUtils]: 10: Hoare triple {538#(<= main_~i~0 2)} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {538#(<= main_~i~0 2)} is VALID [2020-07-17 22:50:58,298 INFO L280 TraceCheckUtils]: 11: Hoare triple {538#(<= main_~i~0 2)} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {539#(<= main_~i~0 3)} is VALID [2020-07-17 22:50:58,299 INFO L280 TraceCheckUtils]: 12: Hoare triple {539#(<= main_~i~0 3)} assume !(~i~0 < 1024); {532#false} is VALID [2020-07-17 22:50:58,299 INFO L280 TraceCheckUtils]: 13: Hoare triple {532#false} call #t~mem1 := read~int(~#A~0.base, 4092 + ~#A~0.offset, 4); {532#false} is VALID [2020-07-17 22:50:58,299 INFO L263 TraceCheckUtils]: 14: Hoare triple {532#false} call __VERIFIER_assert((if 1023 == #t~mem1 then 1 else 0)); {532#false} is VALID [2020-07-17 22:50:58,299 INFO L280 TraceCheckUtils]: 15: Hoare triple {532#false} ~cond := #in~cond; {532#false} is VALID [2020-07-17 22:50:58,300 INFO L280 TraceCheckUtils]: 16: Hoare triple {532#false} assume 0 == ~cond; {532#false} is VALID [2020-07-17 22:50:58,300 INFO L280 TraceCheckUtils]: 17: Hoare triple {532#false} assume !false; {532#false} is VALID [2020-07-17 22:50:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:50:58,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160107539] [2020-07-17 22:50:58,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332167780] [2020-07-17 22:50:58,301 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:50:58,334 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-07-17 22:50:58,334 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 22:50:58,335 INFO L264 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-17 22:50:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:58,345 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 22:50:58,403 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-07-17 22:50:58,404 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-17 22:50:58,410 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 22:50:58,411 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-17 22:50:58,411 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-07-17 22:50:58,564 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 22:50:58,565 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2020-07-17 22:50:58,566 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-17 22:50:58,582 INFO L624 ElimStorePlain]: treesize reduction 11, result has 47.6 percent of original size [2020-07-17 22:50:58,585 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-17 22:50:58,586 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:27, output treesize:7 [2020-07-17 22:50:58,589 WARN L406 uantifierElimination]: Trying to double check SDD result, but SMT solver's response was UNKNOWN. [2020-07-17 22:50:58,589 WARN L407 uantifierElimination]: Input elimination task: ∃ [|#memory_int|, |main_~#A~0.base|, v_main_~i~0_10, |main_~#A~0.offset|]. (let ((.cse0 (select |#memory_int| |main_~#A~0.base|))) (and (< v_main_~i~0_10 1024) (= v_main_~i~0_10 (select .cse0 (+ (* v_main_~i~0_10 4) |main_~#A~0.offset|))) (= (select .cse0 (+ |main_~#A~0.offset| 4092)) |main_#t~mem1|) (<= 1023 v_main_~i~0_10))) [2020-07-17 22:50:58,590 WARN L408 uantifierElimination]: ElimStorePlain result: ∃ []. (and (< |main_#t~mem1| 1024) (<= 1023 |main_#t~mem1|)) [2020-07-17 22:50:58,621 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-17 22:50:58,685 INFO L263 TraceCheckUtils]: 0: Hoare triple {531#true} call ULTIMATE.init(); {531#true} is VALID [2020-07-17 22:50:58,686 INFO L280 TraceCheckUtils]: 1: Hoare triple {531#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {531#true} is VALID [2020-07-17 22:50:58,686 INFO L280 TraceCheckUtils]: 2: Hoare triple {531#true} assume true; {531#true} is VALID [2020-07-17 22:50:58,686 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {531#true} {531#true} #35#return; {531#true} is VALID [2020-07-17 22:50:58,687 INFO L263 TraceCheckUtils]: 4: Hoare triple {531#true} call #t~ret2 := main(); {531#true} is VALID [2020-07-17 22:50:58,687 INFO L280 TraceCheckUtils]: 5: Hoare triple {531#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(8192);havoc ~i~0;~i~0 := 0; {531#true} is VALID [2020-07-17 22:50:58,687 INFO L280 TraceCheckUtils]: 6: Hoare triple {531#true} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {531#true} is VALID [2020-07-17 22:50:58,688 INFO L280 TraceCheckUtils]: 7: Hoare triple {531#true} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {531#true} is VALID [2020-07-17 22:50:58,688 INFO L280 TraceCheckUtils]: 8: Hoare triple {531#true} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {531#true} is VALID [2020-07-17 22:50:58,688 INFO L280 TraceCheckUtils]: 9: Hoare triple {531#true} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {531#true} is VALID [2020-07-17 22:50:58,690 INFO L280 TraceCheckUtils]: 10: Hoare triple {531#true} assume !!(~i~0 < 1024);call write~int(~i~0, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {574#(and (< main_~i~0 1024) (= main_~i~0 (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~i~0 4) |main_~#A~0.offset|))))} is VALID [2020-07-17 22:50:58,691 INFO L280 TraceCheckUtils]: 11: Hoare triple {574#(and (< main_~i~0 1024) (= main_~i~0 (select (select |#memory_int| |main_~#A~0.base|) (+ (* main_~i~0 4) |main_~#A~0.offset|))))} #t~post0 := ~i~0;~i~0 := 1 + #t~post0;havoc #t~post0; {578#(exists ((v_main_~i~0_10 Int)) (and (<= main_~i~0 (+ v_main_~i~0_10 1)) (< v_main_~i~0_10 1024) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* v_main_~i~0_10 4) |main_~#A~0.offset|)))))} is VALID [2020-07-17 22:50:58,693 INFO L280 TraceCheckUtils]: 12: Hoare triple {578#(exists ((v_main_~i~0_10 Int)) (and (<= main_~i~0 (+ v_main_~i~0_10 1)) (< v_main_~i~0_10 1024) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* v_main_~i~0_10 4) |main_~#A~0.offset|)))))} assume !(~i~0 < 1024); {582#(exists ((v_main_~i~0_10 Int)) (and (< v_main_~i~0_10 1024) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* v_main_~i~0_10 4) |main_~#A~0.offset|))) (<= 1023 v_main_~i~0_10)))} is VALID [2020-07-17 22:50:58,695 INFO L280 TraceCheckUtils]: 13: Hoare triple {582#(exists ((v_main_~i~0_10 Int)) (and (< v_main_~i~0_10 1024) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* v_main_~i~0_10 4) |main_~#A~0.offset|))) (<= 1023 v_main_~i~0_10)))} call #t~mem1 := read~int(~#A~0.base, 4092 + ~#A~0.offset, 4); {586#(and (< |main_#t~mem1| 1024) (<= 1023 |main_#t~mem1|))} is VALID [2020-07-17 22:50:58,697 INFO L263 TraceCheckUtils]: 14: Hoare triple {586#(and (< |main_#t~mem1| 1024) (<= 1023 |main_#t~mem1|))} call __VERIFIER_assert((if 1023 == #t~mem1 then 1 else 0)); {590#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2020-07-17 22:50:58,698 INFO L280 TraceCheckUtils]: 15: Hoare triple {590#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {594#(<= 1 __VERIFIER_assert_~cond)} is VALID [2020-07-17 22:50:58,699 INFO L280 TraceCheckUtils]: 16: Hoare triple {594#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {532#false} is VALID [2020-07-17 22:50:58,699 INFO L280 TraceCheckUtils]: 17: Hoare triple {532#false} assume !false; {532#false} is VALID [2020-07-17 22:50:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-17 22:50:58,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-17 22:50:58,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2020-07-17 22:50:58,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373804370] [2020-07-17 22:50:58,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-07-17 22:50:58,702 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:58,703 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-17 22:50:58,727 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:58,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 22:50:58,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:58,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 22:50:58,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-07-17 22:50:58,729 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 8 states. [2020-07-17 22:51:03,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:51:03,089 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-17 22:51:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 22:51:03,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-07-17 22:51:03,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:51:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-17 22:51:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2020-07-17 22:51:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-17 22:51:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2020-07-17 22:51:03,092 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 15 transitions. [2020-07-17 22:51:03,120 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:51:03,121 INFO L225 Difference]: With dead ends: 19 [2020-07-17 22:51:03,121 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 22:51:03,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-07-17 22:51:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 22:51:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 22:51:03,122 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:51:03,122 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-17 22:51:03,123 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:51:03,123 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:51:03,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:51:03,123 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:51:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:51:03,123 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:51:03,124 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:51:03,124 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:51:03,124 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:51:03,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:51:03,124 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:51:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:51:03,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:51:03,125 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:51:03,125 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:51:03,125 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:51:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 22:51:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 22:51:03,125 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-17 22:51:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:51:03,126 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 22:51:03,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 22:51:03,126 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:51:03,126 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:51:03,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:51:03,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 22:51:03,427 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:51:03,428 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-17 22:51:03,428 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:51:03,428 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:51:03,430 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 22:51:03,430 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 22:51:03,430 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:51:03,430 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 19) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-17 22:51:03,430 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 19) no Hoare annotation was computed. [2020-07-17 22:51:03,430 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((v_main_~i~0_10 Int)) (and (< v_main_~i~0_10 1024) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* v_main_~i~0_10 4) |main_~#A~0.offset|))) (<= 1023 v_main_~i~0_10))) (exists ((v_main_~i~0_10 Int)) (and (<= main_~i~0 (+ v_main_~i~0_10 1)) (< v_main_~i~0_10 1024) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* v_main_~i~0_10 4) |main_~#A~0.offset|))))) (< |main_#t~mem1| 1024) (<= 1023 |main_#t~mem1|)) [2020-07-17 22:51:03,431 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-07-17 22:51:03,431 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 19) no Hoare annotation was computed. [2020-07-17 22:51:03,431 INFO L268 CegarLoopResult]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2020-07-17 22:51:03,431 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 16) the Hoare annotation is: (or (exists ((v_main_~i~0_10 Int)) (and (<= main_~i~0 (+ v_main_~i~0_10 1)) (< v_main_~i~0_10 1024) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* v_main_~i~0_10 4) |main_~#A~0.offset|))))) (= 0 main_~i~0)) [2020-07-17 22:51:03,431 INFO L268 CegarLoopResult]: For program point L14-4(lines 14 16) no Hoare annotation was computed. [2020-07-17 22:51:03,431 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-17 22:51:03,431 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-17 22:51:03,431 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-17 22:51:03,432 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-17 22:51:03,432 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-17 22:51:03,432 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-17 22:51:03,436 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:51:03,439 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:51:03,439 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:51:03,439 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:51:03,440 WARN L170 areAnnotationChecker]: L14-4 has no Hoare annotation [2020-07-17 22:51:03,440 WARN L170 areAnnotationChecker]: L14-4 has no Hoare annotation [2020-07-17 22:51:03,440 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-17 22:51:03,440 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:51:03,440 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:51:03,440 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:51:03,441 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:51:03,441 WARN L170 areAnnotationChecker]: L14-4 has no Hoare annotation [2020-07-17 22:51:03,441 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-17 22:51:03,441 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-17 22:51:03,441 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-17 22:51:03,441 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-17 22:51:03,441 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-17 22:51:03,441 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:51:03,442 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-17 22:51:03,442 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:51:03,442 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:51:03,442 INFO L163 areAnnotationChecker]: CFG has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:51:03,448 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,450 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:51:03,452 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,453 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:51:03,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:51:03 BoogieIcfgContainer [2020-07-17 22:51:03,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:51:03,458 INFO L168 Benchmark]: Toolchain (without parser) took 8500.87 ms. Allocated memory was 135.8 MB in the beginning and 254.3 MB in the end (delta: 118.5 MB). Free memory was 100.6 MB in the beginning and 101.9 MB in the end (delta: -1.2 MB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:51:03,459 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 22:51:03,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.84 ms. Allocated memory is still 135.8 MB. Free memory was 100.2 MB in the beginning and 90.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:51:03,461 INFO L168 Benchmark]: Boogie Preprocessor took 129.98 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 90.3 MB in the beginning and 177.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:51:03,462 INFO L168 Benchmark]: RCFGBuilder took 311.50 ms. Allocated memory is still 199.8 MB. Free memory was 177.9 MB in the beginning and 161.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:51:03,463 INFO L168 Benchmark]: TraceAbstraction took 7810.75 ms. Allocated memory was 199.8 MB in the beginning and 254.3 MB in the end (delta: 54.5 MB). Free memory was 160.4 MB in the beginning and 101.9 MB in the end (delta: 58.5 MB). Peak memory consumption was 113.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:51:03,467 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 0.23 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.84 ms. Allocated memory is still 135.8 MB. Free memory was 100.2 MB in the beginning and 90.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.98 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 90.3 MB in the beginning and 177.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 311.50 ms. Allocated memory is still 199.8 MB. Free memory was 177.9 MB in the beginning and 161.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7810.75 ms. Allocated memory was 199.8 MB in the beginning and 254.3 MB in the end (delta: 54.5 MB). Free memory was 160.4 MB in the beginning and 101.9 MB in the end (delta: 58.5 MB). Peak memory consumption was 113.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant [2020-07-17 22:51:03,475 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,475 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,475 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,475 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,476 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 22:51:03,476 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,476 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,476 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,477 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2020-07-17 22:51:03,477 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (\exists v_main_~i~0_10 : int :: (i <= v_main_~i~0_10 + 1 && v_main_~i~0_10 < 1024) && v_main_~i~0_10 == unknown-#memory_int-unknown[A][v_main_~i~0_10 * 4 + A]) || 0 == i - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 24 SDslu, 79 SDs, 0 SdLazy, 115 SolverSat, 11 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 88 HoareAnnotationTreeSize, 11 FomulaSimplifications, 50 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 120 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 112 ConstructedInterpolants, 2 QuantifiedInterpolants, 3981 SizeOfPredicates, 8 NumberOfNonLiveVariables, 170 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 9/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...