/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 12:25:09,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 12:25:09,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 12:25:09,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 12:25:09,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 12:25:09,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 12:25:09,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 12:25:09,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 12:25:09,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 12:25:09,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 12:25:09,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 12:25:09,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 12:25:09,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 12:25:09,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 12:25:09,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 12:25:09,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 12:25:09,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 12:25:09,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 12:25:09,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 12:25:09,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 12:25:09,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 12:25:09,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 12:25:09,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 12:25:09,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 12:25:09,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 12:25:09,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 12:25:09,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 12:25:09,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 12:25:09,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-08 12:25:09,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 12:25:09,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 12:25:09,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-08 12:25:09,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-08 12:25:09,857 INFO L138 SettingsManager]: * Use SBE=true [2020-07-08 12:25:09,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 12:25:09,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 12:25:09,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 12:25:09,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 12:25:09,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 12:25:09,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 12:25:09,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 12:25:09,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 12:25:09,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 12:25:09,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 12:25:09,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 12:25:09,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 12:25:09,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 12:25:09,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-08 12:25:09,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 12:25:09,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 12:25:09,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 12:25:09,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 12:25:09,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-08 12:25:09,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-08 12:25:09,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-08 12:25:09,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-08 12:25:09,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 12:25:09,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-08 12:25:09,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-08 12:25:10,140 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 12:25:10,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 12:25:10,154 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 12:25:10,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 12:25:10,156 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 12:25:10,156 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test20.c [2020-07-08 12:25:10,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e00b34bf/59bf5cb3d8824f89b252549131af37cc/FLAG7e894654e [2020-07-08 12:25:10,708 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 12:25:10,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test20.c [2020-07-08 12:25:10,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e00b34bf/59bf5cb3d8824f89b252549131af37cc/FLAG7e894654e [2020-07-08 12:25:11,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e00b34bf/59bf5cb3d8824f89b252549131af37cc [2020-07-08 12:25:11,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 12:25:11,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 12:25:11,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 12:25:11,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 12:25:11,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 12:25:11,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:25:11" (1/1) ... [2020-07-08 12:25:11,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30399431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:25:11, skipping insertion in model container [2020-07-08 12:25:11,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:25:11" (1/1) ... [2020-07-08 12:25:11,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 12:25:11,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 12:25:11,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:25:11,280 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 12:25:11,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:25:11,323 INFO L208 MainTranslator]: Completed translation [2020-07-08 12:25:11,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:25:11 WrapperNode [2020-07-08 12:25:11,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 12:25:11,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 12:25:11,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 12:25:11,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 12:25:11,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:25:11" (1/1) ... [2020-07-08 12:25:11,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:25:11" (1/1) ... [2020-07-08 12:25:11,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:25:11" (1/1) ... [2020-07-08 12:25:11,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:25:11" (1/1) ... [2020-07-08 12:25:11,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:25:11" (1/1) ... [2020-07-08 12:25:11,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:25:11" (1/1) ... [2020-07-08 12:25:11,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:25:11" (1/1) ... [2020-07-08 12:25:11,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 12:25:11,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 12:25:11,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 12:25:11,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 12:25:11,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:25:11" (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 12:25:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 12:25:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 12:25:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-07-08 12:25:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 12:25:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 12:25:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-07-08 12:25:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 12:25:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 12:25:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-08 12:25:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-08 12:25:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 12:25:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-08 12:25:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-08 12:25:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-08 12:25:11,823 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 12:25:11,823 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-08 12:25:11,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:25:11 BoogieIcfgContainer [2020-07-08 12:25:11,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 12:25:11,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 12:25:11,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 12:25:11,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 12:25:11,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 12:25:11" (1/3) ... [2020-07-08 12:25:11,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9b2686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:25:11, skipping insertion in model container [2020-07-08 12:25:11,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:25:11" (2/3) ... [2020-07-08 12:25:11,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9b2686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:25:11, skipping insertion in model container [2020-07-08 12:25:11,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:25:11" (3/3) ... [2020-07-08 12:25:11,852 INFO L109 eAbstractionObserver]: Analyzing ICFG test20.c [2020-07-08 12:25:11,864 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-08 12:25:11,872 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 12:25:11,885 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 12:25:11,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 12:25:11,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 12:25:11,905 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-08 12:25:11,905 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 12:25:11,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 12:25:11,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 12:25:11,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 12:25:11,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 12:25:11,922 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-08 12:25:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-08 12:25:11,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:25:11,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:25:11,929 INFO L427 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:25:11,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:25:11,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1534444928, now seen corresponding path program 1 times [2020-07-08 12:25:11,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:25:11,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266014268] [2020-07-08 12:25:11,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:25:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:25:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:25:12,313 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#(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)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); {25#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 12:25:12,315 INFO L280 TraceCheckUtils]: 1: Hoare triple {25#(not (= |~#b~0.base| |~#a~0.base|))} assume true; {25#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 12:25:12,317 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {25#(not (= |~#b~0.base| |~#a~0.base|))} {20#true} #18#return; {25#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 12:25:12,322 INFO L263 TraceCheckUtils]: 0: Hoare triple {20#true} call ULTIMATE.init(); {28#(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)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} is VALID [2020-07-08 12:25:12,325 INFO L280 TraceCheckUtils]: 1: Hoare triple {28#(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)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); {25#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 12:25:12,327 INFO L280 TraceCheckUtils]: 2: Hoare triple {25#(not (= |~#b~0.base| |~#a~0.base|))} assume true; {25#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 12:25:12,328 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {25#(not (= |~#b~0.base| |~#a~0.base|))} {20#true} #18#return; {25#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 12:25:12,330 INFO L263 TraceCheckUtils]: 4: Hoare triple {25#(not (= |~#b~0.base| |~#a~0.base|))} call #t~ret0 := main(); {25#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2020-07-08 12:25:12,332 INFO L263 TraceCheckUtils]: 5: Hoare triple {25#(not (= |~#b~0.base| |~#a~0.base|))} call equal(~#a~0.base, ~#a~0.offset, ~#b~0.base, ~#b~0.offset); {26#(not (= |equal_#in~a.base| |equal_#in~b.base|))} is VALID [2020-07-08 12:25:12,334 INFO L280 TraceCheckUtils]: 6: Hoare triple {26#(not (= |equal_#in~a.base| |equal_#in~b.base|))} ~a.base, ~a.offset := #in~a.base, #in~a.offset;~b.base, ~b.offset := #in~b.base, #in~b.offset; {27#(not (= equal_~a.base equal_~b.base))} is VALID [2020-07-08 12:25:12,335 INFO L280 TraceCheckUtils]: 7: Hoare triple {27#(not (= equal_~a.base equal_~b.base))} assume ~a.base == ~b.base && ~a.offset == ~b.offset; {21#false} is VALID [2020-07-08 12:25:12,336 INFO L280 TraceCheckUtils]: 8: Hoare triple {21#false} assume !false; {21#false} is VALID [2020-07-08 12:25:12,338 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 12:25:12,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266014268] [2020-07-08 12:25:12,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:25:12,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 12:25:12,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096737384] [2020-07-08 12:25:12,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-07-08 12:25:12,352 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:25:12,356 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 12:25:12,390 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:25:12,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 12:25:12,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:25:12,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 12:25:12,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-08 12:25:12,404 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-08 12:25:12,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:25:12,844 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-07-08 12:25:12,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-08 12:25:12,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-07-08 12:25:12,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:25:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 12:25:12,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 23 transitions. [2020-07-08 12:25:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 12:25:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 23 transitions. [2020-07-08 12:25:12,865 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 23 transitions. [2020-07-08 12:25:12,911 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:25:12,918 INFO L225 Difference]: With dead ends: 24 [2020-07-08 12:25:12,920 INFO L226 Difference]: Without dead ends: 0 [2020-07-08 12:25:12,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-08 12:25:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-08 12:25:12,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-08 12:25:12,954 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:25:12,955 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-08 12:25:12,955 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 12:25:12,956 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 12:25:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:25:12,956 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 12:25:12,957 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 12:25:12,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:25:12,957 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:25:12,957 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 12:25:12,958 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 12:25:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:25:12,958 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 12:25:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 12:25:12,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:25:12,959 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:25:12,959 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:25:12,960 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:25:12,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-08 12:25:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-08 12:25:12,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-07-08 12:25:12,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:25:12,963 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-08 12:25:12,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 12:25:12,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 12:25:12,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:25:12,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 12:25:12,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-08 12:25:13,104 INFO L268 CegarLoopResult]: For program point equalEXIT(lines 4 12) no Hoare annotation was computed. [2020-07-08 12:25:13,105 INFO L271 CegarLoopResult]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2020-07-08 12:25:13,105 INFO L268 CegarLoopResult]: For program point equalFINAL(lines 4 12) no Hoare annotation was computed. [2020-07-08 12:25:13,105 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |equal_#in~a.base| |equal_#in~b.base|)) [2020-07-08 12:25:13,106 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-08 12:25:13,106 INFO L268 CegarLoopResult]: For program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-08 12:25:13,106 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-08 12:25:13,107 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (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)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|)) [2020-07-08 12:25:13,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-08 12:25:13,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-08 12:25:13,108 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (not (= |~#b~0.base| |~#a~0.base|)) [2020-07-08 12:25:13,108 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-08 12:25:13,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-08 12:25:13,109 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-08 12:25:13,109 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 19) the Hoare annotation is: true [2020-07-08 12:25:13,109 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 19) no Hoare annotation was computed. [2020-07-08 12:25:13,109 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 19) no Hoare annotation was computed. [2020-07-08 12:25:13,115 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 12:25:13,116 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 12:25:13,122 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-08 12:25:13,122 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 12:25:13,122 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 12:25:13,122 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 12:25:13,123 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 12:25:13,123 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-08 12:25:13,123 WARN L170 areAnnotationChecker]: equalErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-08 12:25:13,123 WARN L170 areAnnotationChecker]: equalFINAL has no Hoare annotation [2020-07-08 12:25:13,123 WARN L170 areAnnotationChecker]: equalFINAL has no Hoare annotation [2020-07-08 12:25:13,124 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 12:25:13,124 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 12:25:13,124 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 12:25:13,124 WARN L170 areAnnotationChecker]: equalEXIT has no Hoare annotation [2020-07-08 12:25:13,124 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 12:25:13,126 INFO L163 areAnnotationChecker]: CFG has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 12:25:13,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 12:25:13 BoogieIcfgContainer [2020-07-08 12:25:13,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 12:25:13,150 INFO L168 Benchmark]: Toolchain (without parser) took 2053.91 ms. Allocated memory was 138.4 MB in the beginning and 237.5 MB in the end (delta: 99.1 MB). Free memory was 102.4 MB in the beginning and 180.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-07-08 12:25:13,152 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-08 12:25:13,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.87 ms. Allocated memory is still 138.4 MB. Free memory was 102.2 MB in the beginning and 92.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-08 12:25:13,156 INFO L168 Benchmark]: Boogie Preprocessor took 141.68 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 92.5 MB in the beginning and 183.6 MB in the end (delta: -91.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-08 12:25:13,157 INFO L168 Benchmark]: RCFGBuilder took 367.73 ms. Allocated memory is still 205.0 MB. Free memory was 183.6 MB in the beginning and 167.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-07-08 12:25:13,158 INFO L168 Benchmark]: TraceAbstraction took 1310.68 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 166.4 MB in the beginning and 180.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-07-08 12:25:13,169 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 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 227.87 ms. Allocated memory is still 138.4 MB. Free memory was 102.2 MB in the beginning and 92.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.68 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 92.5 MB in the beginning and 183.6 MB in the end (delta: -91.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 367.73 ms. Allocated memory is still 205.0 MB. Free memory was 183.6 MB in the beginning and 167.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1310.68 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 166.4 MB in the beginning and 180.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: a == b || a == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 16 SDslu, 14 SDs, 0 SdLazy, 18 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 39 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 71 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...