/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 16:23:58,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 16:23:58,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 16:23:58,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 16:23:58,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 16:23:58,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 16:23:58,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 16:23:58,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 16:23:58,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 16:23:58,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 16:23:58,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 16:23:58,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 16:23:58,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 16:23:58,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 16:23:58,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 16:23:58,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 16:23:58,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 16:23:58,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 16:23:58,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 16:23:58,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 16:23:58,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 16:23:58,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 16:23:58,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 16:23:58,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 16:23:58,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 16:23:58,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 16:23:58,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 16:23:58,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 16:23:58,269 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 16:23:58,294 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 16:23:58,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 16:23:58,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 16:23:58,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 16:23:58,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 16:23:58,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 16:23:58,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 16:23:58,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 16:23:58,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 16:23:58,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 16:23:58,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 16:23:58,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 16:23:58,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 16:23:58,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 16:23:58,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 16:23:58,300 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 16:23:58,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 16:23:58,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 16:23:58,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 16:23:58,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 16:23:58,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 16:23:58,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 16:23:58,302 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-08 16:23:58,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 16:23:58,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 16:23:58,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 16:23:58,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 16:23:58,634 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 16:23:58,634 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test08.c [2020-07-08 16:23:58,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0fa82f15/13d1f0e7b1c24c45951e9e0b0bfc45ce/FLAG434b01578 [2020-07-08 16:23:59,204 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 16:23:59,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test08.c [2020-07-08 16:23:59,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0fa82f15/13d1f0e7b1c24c45951e9e0b0bfc45ce/FLAG434b01578 [2020-07-08 16:23:59,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0fa82f15/13d1f0e7b1c24c45951e9e0b0bfc45ce [2020-07-08 16:23:59,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 16:23:59,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 16:23:59,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 16:23:59,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 16:23:59,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 16:23:59,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 04:23:59" (1/1) ... [2020-07-08 16:23:59,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f89a8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:59, skipping insertion in model container [2020-07-08 16:23:59,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 04:23:59" (1/1) ... [2020-07-08 16:23:59,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 16:23:59,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 16:23:59,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 16:23:59,881 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 16:23:59,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 16:23:59,919 INFO L208 MainTranslator]: Completed translation [2020-07-08 16:23:59,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:59 WrapperNode [2020-07-08 16:23:59,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 16:23:59,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 16:23:59,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 16:23:59,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 16:24:00,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:59" (1/1) ... [2020-07-08 16:24:00,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:59" (1/1) ... [2020-07-08 16:24:00,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:59" (1/1) ... [2020-07-08 16:24:00,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:59" (1/1) ... [2020-07-08 16:24:00,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:59" (1/1) ... [2020-07-08 16:24:00,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:59" (1/1) ... [2020-07-08 16:24:00,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:59" (1/1) ... [2020-07-08 16:24:00,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 16:24:00,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 16:24:00,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 16:24:00,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 16:24:00,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 16:24:00,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 16:24:00,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 16:24:00,114 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-08 16:24:00,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 16:24:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 16:24:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-08 16:24:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-08 16:24:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 16:24:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-08 16:24:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 16:24:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-08 16:24:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-08 16:24:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 16:24:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-08 16:24:00,532 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 16:24:00,532 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-08 16:24:00,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 04:24:00 BoogieIcfgContainer [2020-07-08 16:24:00,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 16:24:00,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 16:24:00,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 16:24:00,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 16:24:00,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 04:23:59" (1/3) ... [2020-07-08 16:24:00,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d0063d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 04:24:00, skipping insertion in model container [2020-07-08 16:24:00,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:59" (2/3) ... [2020-07-08 16:24:00,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d0063d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 04:24:00, skipping insertion in model container [2020-07-08 16:24:00,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 04:24:00" (3/3) ... [2020-07-08 16:24:00,546 INFO L109 eAbstractionObserver]: Analyzing ICFG test08.c [2020-07-08 16:24:00,557 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 16:24:00,566 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 16:24:00,581 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 16:24:00,605 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 16:24:00,605 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 16:24:00,605 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-08 16:24:00,605 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 16:24:00,606 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 16:24:00,606 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 16:24:00,606 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 16:24:00,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 16:24:00,624 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-08 16:24:00,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-08 16:24:00,635 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:24:00,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 16:24:00,636 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:24:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:24:00,642 INFO L82 PathProgramCache]: Analyzing trace with hash 56438835, now seen corresponding path program 1 times [2020-07-08 16:24:00,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:24:00,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232475800] [2020-07-08 16:24:00,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:24:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:24:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:24:01,116 INFO L280 TraceCheckUtils]: 0: Hoare triple {82#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~p2~0.offset |old(~p2~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= ~p2~0.base |old(~p2~0.base)|) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0; {54#true} is VALID [2020-07-08 16:24:01,117 INFO L280 TraceCheckUtils]: 1: Hoare triple {54#true} #valid := #valid[0 := 0]; {54#true} is VALID [2020-07-08 16:24:01,117 INFO L280 TraceCheckUtils]: 2: Hoare triple {54#true} assume 0 < #StackHeapBarrier; {54#true} is VALID [2020-07-08 16:24:01,119 INFO L280 TraceCheckUtils]: 3: Hoare triple {54#true} SUMMARY for call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4); srcloc: L4 {83#(= 1 (select |#valid| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,123 INFO L280 TraceCheckUtils]: 4: Hoare triple {83#(= 1 (select |#valid| |~#a~0.base|))} SUMMARY for call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4); srcloc: L4-1 {83#(= 1 (select |#valid| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,125 INFO L280 TraceCheckUtils]: 5: Hoare triple {83#(= 1 (select |#valid| |~#a~0.base|))} SUMMARY for call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4); srcloc: L4-2 {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,128 INFO L280 TraceCheckUtils]: 6: Hoare triple {67#(not (= |~#b~0.base| |~#a~0.base|))} SUMMARY for call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); srcloc: L4-3 {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,129 INFO L280 TraceCheckUtils]: 7: Hoare triple {67#(not (= |~#b~0.base| |~#a~0.base|))} ~p1~0.base, ~p1~0.offset := 0, 0; {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,131 INFO L280 TraceCheckUtils]: 8: Hoare triple {67#(not (= |~#b~0.base| |~#a~0.base|))} ~p2~0.base, ~p2~0.offset := 0, 0; {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,133 INFO L280 TraceCheckUtils]: 9: Hoare triple {67#(not (= |~#b~0.base| |~#a~0.base|))} assume true; {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,134 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {67#(not (= |~#b~0.base| |~#a~0.base|))} {54#true} #55#return; {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:24:01,193 INFO L280 TraceCheckUtils]: 0: Hoare triple {84#(and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|))} SUMMARY for call #t~mem0 := read~int(~p1~0.base, ~p1~0.offset, 4); srcloc: fENTRY {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,194 INFO L280 TraceCheckUtils]: 1: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} SUMMARY for call #t~mem1 := read~int(~p2~0.base, ~p2~0.offset, 4); srcloc: L8 {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,195 INFO L280 TraceCheckUtils]: 2: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} SUMMARY for call #t~mem2 := read~int(~#a~0.base, ~#a~0.offset, 4); srcloc: L8-1 {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,196 INFO L280 TraceCheckUtils]: 3: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} ~v~0 := #t~mem0 + #t~mem1 - #t~mem2; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,197 INFO L280 TraceCheckUtils]: 4: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem0; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,198 INFO L280 TraceCheckUtils]: 5: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem1; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,199 INFO L280 TraceCheckUtils]: 6: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem2; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,200 INFO L280 TraceCheckUtils]: 7: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} assume !(1 == ~v~0); {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,202 INFO L280 TraceCheckUtils]: 8: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} #res := 0; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,203 INFO L280 TraceCheckUtils]: 9: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} assume true; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,205 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {85#(= |old(~p1~0.base)| ~p1~0.base)} {70#(not (= ~p2~0.base ~p1~0.base))} #59#return; {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,209 INFO L263 TraceCheckUtils]: 0: Hoare triple {54#true} call ULTIMATE.init(); {82#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~p2~0.offset |old(~p2~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= ~p2~0.base |old(~p2~0.base)|) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} is VALID [2020-07-08 16:24:01,209 INFO L280 TraceCheckUtils]: 1: Hoare triple {82#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~p2~0.offset |old(~p2~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= ~p2~0.base |old(~p2~0.base)|) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0; {54#true} is VALID [2020-07-08 16:24:01,210 INFO L280 TraceCheckUtils]: 2: Hoare triple {54#true} #valid := #valid[0 := 0]; {54#true} is VALID [2020-07-08 16:24:01,210 INFO L280 TraceCheckUtils]: 3: Hoare triple {54#true} assume 0 < #StackHeapBarrier; {54#true} is VALID [2020-07-08 16:24:01,212 INFO L280 TraceCheckUtils]: 4: Hoare triple {54#true} SUMMARY for call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4); srcloc: L4 {83#(= 1 (select |#valid| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,213 INFO L280 TraceCheckUtils]: 5: Hoare triple {83#(= 1 (select |#valid| |~#a~0.base|))} SUMMARY for call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4); srcloc: L4-1 {83#(= 1 (select |#valid| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,215 INFO L280 TraceCheckUtils]: 6: Hoare triple {83#(= 1 (select |#valid| |~#a~0.base|))} SUMMARY for call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4); srcloc: L4-2 {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,216 INFO L280 TraceCheckUtils]: 7: Hoare triple {67#(not (= |~#b~0.base| |~#a~0.base|))} SUMMARY for call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); srcloc: L4-3 {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,217 INFO L280 TraceCheckUtils]: 8: Hoare triple {67#(not (= |~#b~0.base| |~#a~0.base|))} ~p1~0.base, ~p1~0.offset := 0, 0; {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,218 INFO L280 TraceCheckUtils]: 9: Hoare triple {67#(not (= |~#b~0.base| |~#a~0.base|))} ~p2~0.base, ~p2~0.offset := 0, 0; {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,220 INFO L280 TraceCheckUtils]: 10: Hoare triple {67#(not (= |~#b~0.base| |~#a~0.base|))} assume true; {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,221 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {67#(not (= |~#b~0.base| |~#a~0.base|))} {54#true} #55#return; {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,223 INFO L263 TraceCheckUtils]: 12: Hoare triple {67#(not (= |~#b~0.base| |~#a~0.base|))} call #t~ret7 := main(); {67#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 16:24:01,224 INFO L280 TraceCheckUtils]: 13: Hoare triple {67#(not (= |~#b~0.base| |~#a~0.base|))} ~p1~0.base, ~p1~0.offset := ~#a~0.base, ~#a~0.offset; {68#(and (not (= |~#b~0.base| |~#a~0.base|)) (= |~#a~0.base| ~p1~0.base))} is VALID [2020-07-08 16:24:01,226 INFO L280 TraceCheckUtils]: 14: Hoare triple {68#(and (not (= |~#b~0.base| |~#a~0.base|)) (= |~#a~0.base| ~p1~0.base))} ~p2~0.base, ~p2~0.offset := ~#b~0.base, ~#b~0.offset; {69#(and (not (= ~p2~0.base ~p1~0.base)) (not (= |~#b~0.base| |~#a~0.base|)))} is VALID [2020-07-08 16:24:01,227 INFO L280 TraceCheckUtils]: 15: Hoare triple {69#(and (not (= ~p2~0.base ~p1~0.base)) (not (= |~#b~0.base| |~#a~0.base|)))} SUMMARY for call write~int(1, ~#b~0.base, ~#b~0.offset, 4); srcloc: L22 {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,228 INFO L280 TraceCheckUtils]: 16: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} SUMMARY for call write~int(5, ~#a~0.base, ~#a~0.offset, 4); srcloc: L22-1 {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,229 INFO L280 TraceCheckUtils]: 17: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} SUMMARY for call #t~mem3 := read~int(~#a~0.base, ~#a~0.offset, 4); srcloc: L23 {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,230 INFO L280 TraceCheckUtils]: 18: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} #t~post4 := #t~mem3; {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,232 INFO L280 TraceCheckUtils]: 19: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} SUMMARY for call write~int(#t~post4 - 1, ~#a~0.base, ~#a~0.offset, 4); srcloc: L25-1 {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,233 INFO L280 TraceCheckUtils]: 20: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} havoc #t~post4; {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,234 INFO L280 TraceCheckUtils]: 21: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} havoc #t~mem3; {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,236 INFO L263 TraceCheckUtils]: 22: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} call #t~ret5 := f(); {84#(and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|))} is VALID [2020-07-08 16:24:01,237 INFO L280 TraceCheckUtils]: 23: Hoare triple {84#(and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|))} SUMMARY for call #t~mem0 := read~int(~p1~0.base, ~p1~0.offset, 4); srcloc: fENTRY {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,238 INFO L280 TraceCheckUtils]: 24: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} SUMMARY for call #t~mem1 := read~int(~p2~0.base, ~p2~0.offset, 4); srcloc: L8 {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,239 INFO L280 TraceCheckUtils]: 25: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} SUMMARY for call #t~mem2 := read~int(~#a~0.base, ~#a~0.offset, 4); srcloc: L8-1 {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,240 INFO L280 TraceCheckUtils]: 26: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} ~v~0 := #t~mem0 + #t~mem1 - #t~mem2; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,241 INFO L280 TraceCheckUtils]: 27: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem0; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,242 INFO L280 TraceCheckUtils]: 28: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem1; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,244 INFO L280 TraceCheckUtils]: 29: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem2; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,246 INFO L280 TraceCheckUtils]: 30: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} assume !(1 == ~v~0); {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,247 INFO L280 TraceCheckUtils]: 31: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} #res := 0; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,248 INFO L280 TraceCheckUtils]: 32: Hoare triple {85#(= |old(~p1~0.base)| ~p1~0.base)} assume true; {85#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-08 16:24:01,250 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {85#(= |old(~p1~0.base)| ~p1~0.base)} {70#(not (= ~p2~0.base ~p1~0.base))} #59#return; {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,251 INFO L280 TraceCheckUtils]: 34: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647; {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,252 INFO L280 TraceCheckUtils]: 35: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} SUMMARY for call write~int(#t~ret5, ~#a~0.base, ~#a~0.offset, 4); srcloc: L27-2 {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,253 INFO L280 TraceCheckUtils]: 36: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} havoc #t~ret5; {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,254 INFO L280 TraceCheckUtils]: 37: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} SUMMARY for call #t~mem6 := read~int(~#a~0.base, ~#a~0.offset, 4); srcloc: L29 {70#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-08 16:24:01,255 INFO L280 TraceCheckUtils]: 38: Hoare triple {70#(not (= ~p2~0.base ~p1~0.base))} assume 0 != #t~mem6 && ~p1~0.base == ~p2~0.base && ~p1~0.offset == ~p2~0.offset; {55#false} is VALID [2020-07-08 16:24:01,256 INFO L280 TraceCheckUtils]: 39: Hoare triple {55#false} havoc #t~mem6; {55#false} is VALID [2020-07-08 16:24:01,256 INFO L280 TraceCheckUtils]: 40: Hoare triple {55#false} assume !false; {55#false} is VALID [2020-07-08 16:24:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 16:24:01,264 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:24:01,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232475800] [2020-07-08 16:24:01,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 16:24:01,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-08 16:24:01,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987100873] [2020-07-08 16:24:01,278 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-07-08 16:24:01,282 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 16:24:01,286 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2020-07-08 16:24:01,372 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:24:01,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-08 16:24:01,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 16:24:01,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-08 16:24:01,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-08 16:24:01,387 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 10 states. [2020-07-08 16:24:02,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:24:02,673 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2020-07-08 16:24:02,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-08 16:24:02,673 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-07-08 16:24:02,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 16:24:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-08 16:24:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 71 transitions. [2020-07-08 16:24:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-08 16:24:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 71 transitions. [2020-07-08 16:24:02,697 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states and 71 transitions. [2020-07-08 16:24:02,808 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:24:02,823 INFO L225 Difference]: With dead ends: 71 [2020-07-08 16:24:02,823 INFO L226 Difference]: Without dead ends: 43 [2020-07-08 16:24:02,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-07-08 16:24:02,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-08 16:24:03,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-08 16:24:03,021 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 16:24:03,021 INFO L82 GeneralOperation]: Start isEquivalent. First operand 43 states. Second operand 43 states. [2020-07-08 16:24:03,022 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 43 states. [2020-07-08 16:24:03,022 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 43 states. [2020-07-08 16:24:03,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:24:03,027 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2020-07-08 16:24:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2020-07-08 16:24:03,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:24:03,028 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:24:03,029 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 43 states. [2020-07-08 16:24:03,029 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 43 states. [2020-07-08 16:24:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:24:03,034 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2020-07-08 16:24:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2020-07-08 16:24:03,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:24:03,035 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:24:03,035 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 16:24:03,035 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 16:24:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-08 16:24:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 42 transitions. [2020-07-08 16:24:03,040 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 42 transitions. Word has length 41 [2020-07-08 16:24:03,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 16:24:03,041 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 42 transitions. [2020-07-08 16:24:03,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-08 16:24:03,041 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 43 states and 42 transitions. [2020-07-08 16:24:03,108 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:24:03,109 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2020-07-08 16:24:03,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-08 16:24:03,110 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:24:03,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 16:24:03,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 16:24:03,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:24:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:24:03,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1088655632, now seen corresponding path program 1 times [2020-07-08 16:24:03,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:24:03,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846605375] [2020-07-08 16:24:03,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:24:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 16:24:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 16:24:03,238 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:24:03,239 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-08 16:24:03,239 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-08 16:24:03,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 16:24:03,263 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-08 16:24:03,263 WARN L170 areAnnotationChecker]: fENTRY has no Hoare annotation [2020-07-08 16:24:03,264 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 16:24:03,264 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 16:24:03,264 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-08 16:24:03,264 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 16:24:03,264 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-08 16:24:03,264 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 16:24:03,264 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 16:24:03,265 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-08 16:24:03,265 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-08 16:24:03,265 WARN L170 areAnnotationChecker]: L8-1 has no Hoare annotation [2020-07-08 16:24:03,265 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 16:24:03,265 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-08 16:24:03,265 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 16:24:03,265 WARN L170 areAnnotationChecker]: L8-2 has no Hoare annotation [2020-07-08 16:24:03,266 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-08 16:24:03,266 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-08 16:24:03,266 WARN L170 areAnnotationChecker]: L8-3 has no Hoare annotation [2020-07-08 16:24:03,266 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-08 16:24:03,266 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-08 16:24:03,266 WARN L170 areAnnotationChecker]: L8-4 has no Hoare annotation [2020-07-08 16:24:03,266 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-08 16:24:03,267 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-08 16:24:03,267 WARN L170 areAnnotationChecker]: L8-5 has no Hoare annotation [2020-07-08 16:24:03,267 WARN L170 areAnnotationChecker]: L25-1 has no Hoare annotation [2020-07-08 16:24:03,269 WARN L170 areAnnotationChecker]: L4-4 has no Hoare annotation [2020-07-08 16:24:03,269 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-08 16:24:03,269 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-08 16:24:03,269 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-08 16:24:03,270 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 16:24:03,270 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-08 16:24:03,270 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-08 16:24:03,270 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-08 16:24:03,270 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 16:24:03,270 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-08 16:24:03,270 WARN L170 areAnnotationChecker]: fFINAL has no Hoare annotation [2020-07-08 16:24:03,271 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-08 16:24:03,271 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-08 16:24:03,271 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 16:24:03,271 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-08 16:24:03,271 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2020-07-08 16:24:03,271 WARN L170 areAnnotationChecker]: L27-2 has no Hoare annotation [2020-07-08 16:24:03,271 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2020-07-08 16:24:03,272 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-08 16:24:03,272 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-08 16:24:03,272 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-08 16:24:03,272 WARN L170 areAnnotationChecker]: L29-2 has no Hoare annotation [2020-07-08 16:24:03,272 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-08 16:24:03,272 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-08 16:24:03,272 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-08 16:24:03,273 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-08 16:24:03,273 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-08 16:24:03,273 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 16:24:03,273 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 16:24:03,273 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 16:24:03,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 04:24:03 BoogieIcfgContainer [2020-07-08 16:24:03,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 16:24:03,282 INFO L168 Benchmark]: Toolchain (without parser) took 3645.07 ms. Allocated memory was 146.3 MB in the beginning and 244.3 MB in the end (delta: 98.0 MB). Free memory was 104.5 MB in the beginning and 202.0 MB in the end (delta: -97.5 MB). Peak memory consumption was 579.7 kB. Max. memory is 7.1 GB. [2020-07-08 16:24:03,285 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-08 16:24:03,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.86 ms. Allocated memory is still 146.3 MB. Free memory was 104.1 MB in the beginning and 94.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-08 16:24:03,288 INFO L168 Benchmark]: Boogie Preprocessor took 132.66 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 94.0 MB in the beginning and 181.0 MB in the end (delta: -87.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-08 16:24:03,289 INFO L168 Benchmark]: RCFGBuilder took 483.60 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 156.5 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-07-08 16:24:03,291 INFO L168 Benchmark]: TraceAbstraction took 2739.04 ms. Allocated memory was 202.9 MB in the beginning and 244.3 MB in the end (delta: 41.4 MB). Free memory was 155.8 MB in the beginning and 202.0 MB in the end (delta: -46.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-08 16:24:03,306 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 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.86 ms. Allocated memory is still 146.3 MB. Free memory was 104.1 MB in the beginning and 94.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.66 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 94.0 MB in the beginning and 181.0 MB in the end (delta: -87.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 483.60 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 156.5 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2739.04 ms. Allocated memory was 202.9 MB in the beginning and 244.3 MB in the end (delta: 41.4 MB). Free memory was 155.8 MB in the beginning and 202.0 MB in the end (delta: -46.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 36]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L4] int a, b; [L5] int *p1, *p2; [L19] p1 = &a [L20] p2 = &b [L22] b = 1 [L23] a = 5 [L25] EXPR \read(a) [L25] a-- [L27] CALL, EXPR f() [L8] EXPR \read(*p1) [L8] EXPR \read(*p2) [L8] EXPR \read(a) [L8] int v = *p1 + *p2 - a; [L9] COND TRUE v == 1 [L10] p1 = p2 [L11] return v; [L27] RET, EXPR f() [L27] a = f() [L29] EXPR \read(a) [L29] COND TRUE a && p1 == p2 [L36] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 160 SDslu, 84 SDs, 0 SdLazy, 120 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 incorrect! Received shutdown request...