/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 0.1.25-267fbe0 [2020-07-18 00:21:41,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:21:41,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:21:41,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-18 00:21:41,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:21:41,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:21:41,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:21:41,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:21:41,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:21:41,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:21:41,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:21:41,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:21:41,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:21:41,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:21:41,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:21:41,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:21:41,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:21:41,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:21:41,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:21:41,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:21:41,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:21:41,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:21:41,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:21:41,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:21:41,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:21:41,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:21:41,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:21:41,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:21:41,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:21:41,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:21:41,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:21:41,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:21:41,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:21:41,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:21:41,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:21:41,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:21:41,986 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:21:41,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:21:41,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:21:41,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:21:41,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:21:41,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:21:41,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:21:41,987 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:21:42,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:21:42,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:21:42,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:21:42,302 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:21:42,303 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:21:42,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test08.c [2020-07-18 00:21:42,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8d8f88f/8a0025518ee54944a9ca1a96d93efcfc/FLAG8b1f4a118 [2020-07-18 00:21:42,832 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:21:42,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test08.c [2020-07-18 00:21:42,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8d8f88f/8a0025518ee54944a9ca1a96d93efcfc/FLAG8b1f4a118 [2020-07-18 00:21:43,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8d8f88f/8a0025518ee54944a9ca1a96d93efcfc [2020-07-18 00:21:43,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:21:43,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:21:43,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:21:43,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:21:43,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:21:43,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:21:43" (1/1) ... [2020-07-18 00:21:43,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161b7128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:43, skipping insertion in model container [2020-07-18 00:21:43,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:21:43" (1/1) ... [2020-07-18 00:21:43,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:21:43,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:21:43,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:21:43,442 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:21:43,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:21:43,477 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:21:43,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:43 WrapperNode [2020-07-18 00:21:43,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:21:43,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:21:43,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:21:43,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:21:43,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:43" (1/1) ... [2020-07-18 00:21:43,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:43" (1/1) ... [2020-07-18 00:21:43,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:43" (1/1) ... [2020-07-18 00:21:43,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:43" (1/1) ... [2020-07-18 00:21:43,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:43" (1/1) ... [2020-07-18 00:21:43,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:43" (1/1) ... [2020-07-18 00:21:43,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:43" (1/1) ... [2020-07-18 00:21:43,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:21:43,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:21:43,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:21:43,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:21:43,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:21:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:21:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:21:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-18 00:21:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:21:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:21:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-18 00:21:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:21:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:21:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:21:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:21:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 00:21:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-18 00:21:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:21:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:21:44,120 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:21:44,120 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 00:21:44,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:21:44 BoogieIcfgContainer [2020-07-18 00:21:44,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:21:44,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:21:44,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:21:44,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:21:44,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:21:43" (1/3) ... [2020-07-18 00:21:44,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f77b77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:21:44, skipping insertion in model container [2020-07-18 00:21:44,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:21:43" (2/3) ... [2020-07-18 00:21:44,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f77b77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:21:44, skipping insertion in model container [2020-07-18 00:21:44,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:21:44" (3/3) ... [2020-07-18 00:21:44,140 INFO L109 eAbstractionObserver]: Analyzing ICFG test08.c [2020-07-18 00:21:44,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:21:44,159 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:21:44,171 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:21:44,191 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:21:44,191 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:21:44,192 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:21:44,192 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:21:44,192 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:21:44,192 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:21:44,192 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:21:44,193 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:21:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-18 00:21:44,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-18 00:21:44,217 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:21:44,218 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] [2020-07-18 00:21:44,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:21:44,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:21:44,225 INFO L82 PathProgramCache]: Analyzing trace with hash 56438835, now seen corresponding path program 1 times [2020-07-18 00:21:44,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:21:44,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353018604] [2020-07-18 00:21:44,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:21:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:21:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:21:44,769 INFO L280 TraceCheckUtils]: 0: Hoare triple {81#(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 [2020-07-18 00:21:44,770 INFO L280 TraceCheckUtils]: 1: Hoare triple {54#true} #valid := #valid[0 := 0]; {54#true} is VALID [2020-07-18 00:21:44,770 INFO L280 TraceCheckUtils]: 2: Hoare triple {54#true} assume 0 < #StackHeapBarrier; {54#true} is VALID [2020-07-18 00:21:44,772 INFO L280 TraceCheckUtils]: 3: Hoare triple {54#true} SUMMARY for call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4); srcloc: L4 {82#(= 1 (select |#valid| |~#a~0.base|))} is VALID [2020-07-18 00:21:44,774 INFO L280 TraceCheckUtils]: 4: Hoare triple {82#(= 1 (select |#valid| |~#a~0.base|))} SUMMARY for call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4); srcloc: L4-1 {82#(= 1 (select |#valid| |~#a~0.base|))} is VALID [2020-07-18 00:21:44,775 INFO L280 TraceCheckUtils]: 5: Hoare triple {82#(= 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 [2020-07-18 00:21:44,776 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 [2020-07-18 00:21:44,777 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 [2020-07-18 00:21:44,778 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 [2020-07-18 00:21:44,779 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 [2020-07-18 00:21:44,781 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 [2020-07-18 00:21:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:21:44,839 INFO L280 TraceCheckUtils]: 0: Hoare triple {83#(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 {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,841 INFO L280 TraceCheckUtils]: 1: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} SUMMARY for call #t~mem1 := read~int(~p2~0.base, ~p2~0.offset, 4); srcloc: L8 {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,842 INFO L280 TraceCheckUtils]: 2: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} SUMMARY for call #t~mem2 := read~int(~#a~0.base, ~#a~0.offset, 4); srcloc: L8-1 {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,843 INFO L280 TraceCheckUtils]: 3: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} ~v~0 := #t~mem0 + #t~mem1 - #t~mem2; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,843 INFO L280 TraceCheckUtils]: 4: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem0; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,844 INFO L280 TraceCheckUtils]: 5: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem2; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,845 INFO L280 TraceCheckUtils]: 6: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem1; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,846 INFO L280 TraceCheckUtils]: 7: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} assume !(1 == ~v~0); {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,847 INFO L280 TraceCheckUtils]: 8: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} #res := 0; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,848 INFO L280 TraceCheckUtils]: 9: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} assume true; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,850 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {84#(= |old(~p1~0.base)| ~p1~0.base)} {69#(not (= ~p2~0.base ~p1~0.base))} #59#return; {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,853 INFO L263 TraceCheckUtils]: 0: Hoare triple {54#true} call ULTIMATE.init(); {81#(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 [2020-07-18 00:21:44,854 INFO L280 TraceCheckUtils]: 1: Hoare triple {81#(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 [2020-07-18 00:21:44,854 INFO L280 TraceCheckUtils]: 2: Hoare triple {54#true} #valid := #valid[0 := 0]; {54#true} is VALID [2020-07-18 00:21:44,855 INFO L280 TraceCheckUtils]: 3: Hoare triple {54#true} assume 0 < #StackHeapBarrier; {54#true} is VALID [2020-07-18 00:21:44,856 INFO L280 TraceCheckUtils]: 4: Hoare triple {54#true} SUMMARY for call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4); srcloc: L4 {82#(= 1 (select |#valid| |~#a~0.base|))} is VALID [2020-07-18 00:21:44,857 INFO L280 TraceCheckUtils]: 5: Hoare triple {82#(= 1 (select |#valid| |~#a~0.base|))} SUMMARY for call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4); srcloc: L4-1 {82#(= 1 (select |#valid| |~#a~0.base|))} is VALID [2020-07-18 00:21:44,859 INFO L280 TraceCheckUtils]: 6: Hoare triple {82#(= 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 [2020-07-18 00:21:44,860 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 [2020-07-18 00:21:44,861 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 [2020-07-18 00:21:44,862 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 [2020-07-18 00:21:44,863 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 [2020-07-18 00:21:44,864 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 [2020-07-18 00:21:44,865 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 [2020-07-18 00:21:44,866 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#(not (= |~#b~0.base| ~p1~0.base))} is VALID [2020-07-18 00:21:44,867 INFO L280 TraceCheckUtils]: 14: Hoare triple {68#(not (= |~#b~0.base| ~p1~0.base))} ~p2~0.base, ~p2~0.offset := ~#b~0.base, ~#b~0.offset; {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,869 INFO L280 TraceCheckUtils]: 15: Hoare triple {69#(not (= ~p2~0.base ~p1~0.base))} SUMMARY for call write~int(1, ~#b~0.base, ~#b~0.offset, 4); srcloc: L22 {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,870 INFO L280 TraceCheckUtils]: 16: Hoare triple {69#(not (= ~p2~0.base ~p1~0.base))} SUMMARY for call write~int(5, ~#a~0.base, ~#a~0.offset, 4); srcloc: L22-1 {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,871 INFO L280 TraceCheckUtils]: 17: Hoare triple {69#(not (= ~p2~0.base ~p1~0.base))} SUMMARY for call #t~mem3 := read~int(~#a~0.base, ~#a~0.offset, 4); srcloc: L23 {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,872 INFO L280 TraceCheckUtils]: 18: Hoare triple {69#(not (= ~p2~0.base ~p1~0.base))} #t~post4 := #t~mem3; {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,873 INFO L280 TraceCheckUtils]: 19: Hoare triple {69#(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 {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,874 INFO L280 TraceCheckUtils]: 20: Hoare triple {69#(not (= ~p2~0.base ~p1~0.base))} havoc #t~mem3; {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,875 INFO L280 TraceCheckUtils]: 21: Hoare triple {69#(not (= ~p2~0.base ~p1~0.base))} havoc #t~post4; {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,876 INFO L263 TraceCheckUtils]: 22: Hoare triple {69#(not (= ~p2~0.base ~p1~0.base))} call #t~ret5 := f(); {83#(and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|))} is VALID [2020-07-18 00:21:44,877 INFO L280 TraceCheckUtils]: 23: Hoare triple {83#(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 {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,878 INFO L280 TraceCheckUtils]: 24: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} SUMMARY for call #t~mem1 := read~int(~p2~0.base, ~p2~0.offset, 4); srcloc: L8 {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,879 INFO L280 TraceCheckUtils]: 25: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} SUMMARY for call #t~mem2 := read~int(~#a~0.base, ~#a~0.offset, 4); srcloc: L8-1 {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,880 INFO L280 TraceCheckUtils]: 26: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} ~v~0 := #t~mem0 + #t~mem1 - #t~mem2; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,881 INFO L280 TraceCheckUtils]: 27: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem0; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,882 INFO L280 TraceCheckUtils]: 28: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem2; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,883 INFO L280 TraceCheckUtils]: 29: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} havoc #t~mem1; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,884 INFO L280 TraceCheckUtils]: 30: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} assume !(1 == ~v~0); {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,885 INFO L280 TraceCheckUtils]: 31: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} #res := 0; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,886 INFO L280 TraceCheckUtils]: 32: Hoare triple {84#(= |old(~p1~0.base)| ~p1~0.base)} assume true; {84#(= |old(~p1~0.base)| ~p1~0.base)} is VALID [2020-07-18 00:21:44,887 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {84#(= |old(~p1~0.base)| ~p1~0.base)} {69#(not (= ~p2~0.base ~p1~0.base))} #59#return; {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,888 INFO L280 TraceCheckUtils]: 34: Hoare triple {69#(not (= ~p2~0.base ~p1~0.base))} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647; {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,889 INFO L280 TraceCheckUtils]: 35: Hoare triple {69#(not (= ~p2~0.base ~p1~0.base))} SUMMARY for call write~int(#t~ret5, ~#a~0.base, ~#a~0.offset, 4); srcloc: L27-2 {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,890 INFO L280 TraceCheckUtils]: 36: Hoare triple {69#(not (= ~p2~0.base ~p1~0.base))} havoc #t~ret5; {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,891 INFO L280 TraceCheckUtils]: 37: Hoare triple {69#(not (= ~p2~0.base ~p1~0.base))} SUMMARY for call #t~mem6 := read~int(~#a~0.base, ~#a~0.offset, 4); srcloc: L29 {69#(not (= ~p2~0.base ~p1~0.base))} is VALID [2020-07-18 00:21:44,892 INFO L280 TraceCheckUtils]: 38: Hoare triple {69#(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 [2020-07-18 00:21:44,893 INFO L280 TraceCheckUtils]: 39: Hoare triple {55#false} havoc #t~mem6; {55#false} is VALID [2020-07-18 00:21:44,893 INFO L280 TraceCheckUtils]: 40: Hoare triple {55#false} assume !false; {55#false} is VALID [2020-07-18 00:21:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:21:44,904 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:21:44,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353018604] [2020-07-18 00:21:44,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:21:44,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-18 00:21:44,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865084984] [2020-07-18 00:21:44,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-07-18 00:21:44,919 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:21:44,923 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-18 00:21:44,998 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:21:44,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-18 00:21:44,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:21:45,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-18 00:21:45,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-18 00:21:45,013 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 9 states. [2020-07-18 00:21:46,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:21:46,153 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2020-07-18 00:21:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-18 00:21:46,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-07-18 00:21:46,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:21:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-18 00:21:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 71 transitions. [2020-07-18 00:21:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-18 00:21:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 71 transitions. [2020-07-18 00:21:46,176 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states and 71 transitions. [2020-07-18 00:21:46,277 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:21:46,290 INFO L225 Difference]: With dead ends: 71 [2020-07-18 00:21:46,290 INFO L226 Difference]: Without dead ends: 43 [2020-07-18 00:21:46,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-07-18 00:21:46,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-18 00:21:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-18 00:21:46,458 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:21:46,459 INFO L82 GeneralOperation]: Start isEquivalent. First operand 43 states. Second operand 43 states. [2020-07-18 00:21:46,459 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 43 states. [2020-07-18 00:21:46,460 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 43 states. [2020-07-18 00:21:46,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:21:46,465 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2020-07-18 00:21:46,465 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2020-07-18 00:21:46,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:21:46,466 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:21:46,466 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 43 states. [2020-07-18 00:21:46,466 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 43 states. [2020-07-18 00:21:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:21:46,471 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2020-07-18 00:21:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2020-07-18 00:21:46,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:21:46,472 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:21:46,473 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:21:46,473 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:21:46,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-18 00:21:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 42 transitions. [2020-07-18 00:21:46,478 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 42 transitions. Word has length 41 [2020-07-18 00:21:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:21:46,478 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 42 transitions. [2020-07-18 00:21:46,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-18 00:21:46,478 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 43 states and 42 transitions. [2020-07-18 00:21:46,575 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:21:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2020-07-18 00:21:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-18 00:21:46,576 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:21:46,577 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] [2020-07-18 00:21:46,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:21:46,578 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:21:46,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:21:46,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1088655632, now seen corresponding path program 1 times [2020-07-18 00:21:46,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:21:46,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920240453] [2020-07-18 00:21:46,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:21:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:21:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:21:46,677 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:21:46,678 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 00:21:46,678 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 00:21:46,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:21:46,701 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-18 00:21:46,702 WARN L170 areAnnotationChecker]: fENTRY has no Hoare annotation [2020-07-18 00:21:46,702 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:21:46,702 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:21:46,702 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 00:21:46,702 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:21:46,703 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-18 00:21:46,703 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:21:46,703 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:21:46,703 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-18 00:21:46,703 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-18 00:21:46,703 WARN L170 areAnnotationChecker]: L8-1 has no Hoare annotation [2020-07-18 00:21:46,703 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 00:21:46,704 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-18 00:21:46,704 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-18 00:21:46,704 WARN L170 areAnnotationChecker]: L8-2 has no Hoare annotation [2020-07-18 00:21:46,704 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-18 00:21:46,704 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-18 00:21:46,704 WARN L170 areAnnotationChecker]: L8-3 has no Hoare annotation [2020-07-18 00:21:46,704 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-18 00:21:46,705 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-18 00:21:46,705 WARN L170 areAnnotationChecker]: L8-4 has no Hoare annotation [2020-07-18 00:21:46,705 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-18 00:21:46,705 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-18 00:21:46,706 WARN L170 areAnnotationChecker]: L8-5 has no Hoare annotation [2020-07-18 00:21:46,706 WARN L170 areAnnotationChecker]: L25-1 has no Hoare annotation [2020-07-18 00:21:46,707 WARN L170 areAnnotationChecker]: L4-4 has no Hoare annotation [2020-07-18 00:21:46,708 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-18 00:21:46,708 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-18 00:21:46,708 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-18 00:21:46,708 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-18 00:21:46,708 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-18 00:21:46,708 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-18 00:21:46,708 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-18 00:21:46,709 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 00:21:46,709 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-18 00:21:46,709 WARN L170 areAnnotationChecker]: fFINAL has no Hoare annotation [2020-07-18 00:21:46,709 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-18 00:21:46,709 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-18 00:21:46,709 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 00:21:46,709 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-18 00:21:46,709 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2020-07-18 00:21:46,710 WARN L170 areAnnotationChecker]: L27-2 has no Hoare annotation [2020-07-18 00:21:46,710 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2020-07-18 00:21:46,710 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-18 00:21:46,710 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-18 00:21:46,710 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-18 00:21:46,710 WARN L170 areAnnotationChecker]: L29-2 has no Hoare annotation [2020-07-18 00:21:46,710 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-18 00:21:46,711 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-18 00:21:46,711 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-18 00:21:46,711 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-18 00:21:46,711 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-18 00:21:46,711 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 00:21:46,711 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 00:21:46,711 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. [2020-07-18 00:21:46,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:21:46 BoogieIcfgContainer [2020-07-18 00:21:46,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:21:46,719 INFO L168 Benchmark]: Toolchain (without parser) took 3499.18 ms. Allocated memory was 143.1 MB in the beginning and 249.6 MB in the end (delta: 106.4 MB). Free memory was 101.5 MB in the beginning and 113.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 94.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:21:46,722 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 143.1 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 00:21:46,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.96 ms. Allocated memory is still 143.1 MB. Free memory was 101.1 MB in the beginning and 91.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:21:46,725 INFO L168 Benchmark]: Boogie Preprocessor took 150.95 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 91.0 MB in the beginning and 178.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:21:46,726 INFO L168 Benchmark]: RCFGBuilder took 493.72 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 154.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:21:46,728 INFO L168 Benchmark]: TraceAbstraction took 2588.35 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 154.0 MB in the beginning and 113.6 MB in the end (delta: 40.4 MB). Peak memory consumption was 89.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:21:46,742 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 0.90 ms. Allocated memory is still 143.1 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.96 ms. Allocated memory is still 143.1 MB. Free memory was 101.1 MB in the beginning and 91.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.95 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 91.0 MB in the beginning and 178.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.72 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 154.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2588.35 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 154.0 MB in the beginning and 113.6 MB in the end (delta: 40.4 MB). Peak memory consumption was 89.1 MB. 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: 2.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 149 SDslu, 78 SDs, 0 SdLazy, 107 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 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...