/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/test13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 15:06:33,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 15:06:33,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 15:06:33,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-10 15:06:33,659 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 [2020-07-10 15:06:33,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 15:06:33,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 15:06:33,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 15:06:33,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 15:06:33,677 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 15:06:33,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 15:06:33,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 15:06:33,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 15:06:33,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 15:06:33,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 15:06:33,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 15:06:33,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 15:06:33,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 15:06:33,679 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 15:06:33,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 15:06:33,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 15:06:33,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 15:06:33,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 15:06:33,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 15:06:33,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 15:06:33,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 15:06:33,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 15:06:33,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 15:06:33,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 15:06:33,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 15:06:33,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 15:06:33,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 15:06:33,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 15:06:33,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 15:06:33,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 15:06:34,002 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 15:06:34,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 15:06:34,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 15:06:34,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 15:06:34,022 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 15:06:34,023 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test13.c [2020-07-10 15:06:34,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28dfc07a5/34489394420942e1930cbb0dd00f7b14/FLAG7afdc519e [2020-07-10 15:06:34,597 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 15:06:34,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test13.c [2020-07-10 15:06:34,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28dfc07a5/34489394420942e1930cbb0dd00f7b14/FLAG7afdc519e [2020-07-10 15:06:34,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28dfc07a5/34489394420942e1930cbb0dd00f7b14 [2020-07-10 15:06:34,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 15:06:34,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 15:06:34,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 15:06:34,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 15:06:35,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 15:06:35,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:06:34" (1/1) ... [2020-07-10 15:06:35,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2973a9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:35, skipping insertion in model container [2020-07-10 15:06:35,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:06:34" (1/1) ... [2020-07-10 15:06:35,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 15:06:35,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 15:06:35,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:06:35,212 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 15:06:35,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:06:35,272 INFO L208 MainTranslator]: Completed translation [2020-07-10 15:06:35,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:35 WrapperNode [2020-07-10 15:06:35,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 15:06:35,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 15:06:35,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 15:06:35,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 15:06:35,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:35" (1/1) ... [2020-07-10 15:06:35,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:35" (1/1) ... [2020-07-10 15:06:35,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:35" (1/1) ... [2020-07-10 15:06:35,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:35" (1/1) ... [2020-07-10 15:06:35,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:35" (1/1) ... [2020-07-10 15:06:35,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:35" (1/1) ... [2020-07-10 15:06:35,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:35" (1/1) ... [2020-07-10 15:06:35,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 15:06:35,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 15:06:35,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 15:06:35,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 15:06:35,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:35" (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 [2020-07-10 15:06:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 15:06:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 15:06:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-10 15:06:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 15:06:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 15:06:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-10 15:06:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 15:06:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 15:06:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-10 15:06:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-10 15:06:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 15:06:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-10 15:06:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-10 15:06:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-10 15:06:35,722 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 15:06:35,723 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-10 15:06:35,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:06:35 BoogieIcfgContainer [2020-07-10 15:06:35,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 15:06:35,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 15:06:35,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 15:06:35,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 15:06:35,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 03:06:34" (1/3) ... [2020-07-10 15:06:35,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be5468c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:06:35, skipping insertion in model container [2020-07-10 15:06:35,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:35" (2/3) ... [2020-07-10 15:06:35,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be5468c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:06:35, skipping insertion in model container [2020-07-10 15:06:35,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:06:35" (3/3) ... [2020-07-10 15:06:35,746 INFO L109 eAbstractionObserver]: Analyzing ICFG test13.c [2020-07-10 15:06:35,767 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 15:06:35,777 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 15:06:35,797 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 15:06:35,823 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 15:06:35,824 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 15:06:35,824 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 15:06:35,824 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 15:06:35,824 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 15:06:35,824 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 15:06:35,825 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 15:06:35,825 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 15:06:35,845 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-10 15:06:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-10 15:06:35,852 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:06:35,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:06:35,853 INFO L427 AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:06:35,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:06:35,861 INFO L82 PathProgramCache]: Analyzing trace with hash 562540648, now seen corresponding path program 1 times [2020-07-10 15:06:35,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:06:35,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582147049] [2020-07-10 15:06:35,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:06:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:36,508 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)|) (= ~pa~0.base |old(~pa~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|) (= ~pb~0.base |old(~pb~0.base)|))} #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);~pa~0.base, ~pa~0.offset := ~#a~0.base, ~#a~0.offset;~pb~0.base, ~pb~0.offset := ~#b~0.base, ~#b~0.offset; {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} is VALID [2020-07-10 15:06:36,511 INFO L280 TraceCheckUtils]: 1: Hoare triple {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} assume true; {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} is VALID [2020-07-10 15:06:36,513 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} {20#true} #18#return; {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} is VALID [2020-07-10 15:06:36,520 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)|) (= ~pa~0.base |old(~pa~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|) (= ~pb~0.base |old(~pb~0.base)|))} is VALID [2020-07-10 15:06:36,523 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)|) (= ~pa~0.base |old(~pa~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|) (= ~pb~0.base |old(~pb~0.base)|))} #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);~pa~0.base, ~pa~0.offset := ~#a~0.base, ~#a~0.offset;~pb~0.base, ~pb~0.offset := ~#b~0.base, ~#b~0.offset; {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} is VALID [2020-07-10 15:06:36,524 INFO L280 TraceCheckUtils]: 2: Hoare triple {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} assume true; {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} is VALID [2020-07-10 15:06:36,527 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} {20#true} #18#return; {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} is VALID [2020-07-10 15:06:36,530 INFO L263 TraceCheckUtils]: 4: Hoare triple {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} call #t~ret0 := main(); {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} is VALID [2020-07-10 15:06:36,533 INFO L263 TraceCheckUtils]: 5: Hoare triple {25#(and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0))} call check(~pa~0.base, ~pa~0.offset, ~#a~0.base, ~#a~0.offset); {26#(and (= |check_#in~b.offset| 0) (<= |check_#in~a.offset| 0) (= |check_#in~a.base| |check_#in~b.base|) (<= 0 |check_#in~a.offset|))} is VALID [2020-07-10 15:06:36,535 INFO L280 TraceCheckUtils]: 6: Hoare triple {26#(and (= |check_#in~b.offset| 0) (<= |check_#in~a.offset| 0) (= |check_#in~a.base| |check_#in~b.base|) (<= 0 |check_#in~a.offset|))} ~a.base, ~a.offset := #in~a.base, #in~a.offset;~b.base, ~b.offset := #in~b.base, #in~b.offset; {27#(and (= check_~a.base check_~b.base) (<= check_~a.offset 0) (<= 0 check_~a.offset) (= check_~a.offset check_~b.offset))} is VALID [2020-07-10 15:06:36,537 INFO L280 TraceCheckUtils]: 7: Hoare triple {27#(and (= check_~a.base check_~b.base) (<= check_~a.offset 0) (<= 0 check_~a.offset) (= check_~a.offset check_~b.offset))} assume ~a.base != ~b.base || ~a.offset != ~b.offset; {21#false} is VALID [2020-07-10 15:06:36,537 INFO L280 TraceCheckUtils]: 8: Hoare triple {21#false} assume !false; {21#false} is VALID [2020-07-10 15:06:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:06:36,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582147049] [2020-07-10 15:06:36,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:06:36,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 15:06:36,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129031041] [2020-07-10 15:06:36,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-07-10 15:06:36,566 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:06:36,570 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-10 15:06:36,603 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:36,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-10 15:06:36,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:06:36,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-10 15:06:36,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-10 15:06:36,618 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-10 15:06:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:37,164 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-07-10 15:06:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-10 15:06:37,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-07-10 15:06:37,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:06:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 15:06:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 23 transitions. [2020-07-10 15:06:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 15:06:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 23 transitions. [2020-07-10 15:06:37,184 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 23 transitions. [2020-07-10 15:06:37,243 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:37,251 INFO L225 Difference]: With dead ends: 24 [2020-07-10 15:06:37,252 INFO L226 Difference]: Without dead ends: 0 [2020-07-10 15:06:37,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-10 15:06:37,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-10 15:06:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-10 15:06:37,282 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:06:37,283 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-10 15:06:37,283 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 15:06:37,284 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 15:06:37,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:37,285 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 15:06:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 15:06:37,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:37,285 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:37,286 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 15:06:37,286 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 15:06:37,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:37,286 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 15:06:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 15:06:37,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:37,287 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:37,287 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:06:37,288 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:06:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-10 15:06:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-10 15:06:37,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-07-10 15:06:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:06:37,290 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-10 15:06:37,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-10 15:06:37,291 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 15:06:37,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:37,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 15:06:37,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-10 15:06:37,443 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-10 15:06:37,444 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)|) (= ~pa~0.base |old(~pa~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|) (= ~pb~0.base |old(~pb~0.base)|)) [2020-07-10 15:06:37,444 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-10 15:06:37,444 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-10 15:06:37,444 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 0 |~#a~0.offset|) (<= 0 ~pa~0.offset) (= ~pa~0.base |~#a~0.base|) (<= ~pa~0.offset 0)) [2020-07-10 15:06:37,444 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-10 15:06:37,445 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-10 15:06:37,445 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 20) the Hoare annotation is: true [2020-07-10 15:06:37,445 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 20) no Hoare annotation was computed. [2020-07-10 15:06:37,445 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 20) no Hoare annotation was computed. [2020-07-10 15:06:37,445 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-10 15:06:37,446 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 4 12) the Hoare annotation is: true [2020-07-10 15:06:37,446 INFO L268 CegarLoopResult]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-10 15:06:37,446 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 4 12) no Hoare annotation was computed. [2020-07-10 15:06:37,446 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (not (<= 0 |check_#in~a.offset|)) (not (= 0 |~#a~0.offset|)) (not (<= 0 ~pa~0.offset)) (not (<= ~pa~0.offset 0)) (not (<= |check_#in~a.offset| 0)) (not (= |~#a~0.base| ~pa~0.base)) (not (= |check_#in~b.offset| 0)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2020-07-10 15:06:37,447 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-10 15:06:37,447 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 4 12) no Hoare annotation was computed. [2020-07-10 15:06:37,452 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 15:06:37,454 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-10 15:06:37,454 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 15:06:37,454 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 15:06:37,455 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 15:06:37,455 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-10 15:06:37,455 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 15:06:37,455 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 15:06:37,455 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 15:06:37,455 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 15:06:37,456 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 15:06:37,456 WARN L170 areAnnotationChecker]: checkErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-10 15:06:37,456 WARN L170 areAnnotationChecker]: checkFINAL has no Hoare annotation [2020-07-10 15:06:37,456 WARN L170 areAnnotationChecker]: checkFINAL has no Hoare annotation [2020-07-10 15:06:37,456 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 15:06:37,457 WARN L170 areAnnotationChecker]: checkEXIT has no Hoare annotation [2020-07-10 15:06:37,457 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. [2020-07-10 15:06:37,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 03:06:37 BoogieIcfgContainer [2020-07-10 15:06:37,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 15:06:37,476 INFO L168 Benchmark]: Toolchain (without parser) took 2479.04 ms. Allocated memory was 143.7 MB in the beginning and 230.7 MB in the end (delta: 87.0 MB). Free memory was 101.1 MB in the beginning and 110.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:37,477 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-10 15:06:37,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.33 ms. Allocated memory is still 143.7 MB. Free memory was 100.9 MB in the beginning and 91.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:37,479 INFO L168 Benchmark]: Boogie Preprocessor took 120.84 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 91.1 MB in the beginning and 178.7 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:37,480 INFO L168 Benchmark]: RCFGBuilder took 332.53 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 161.4 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:37,481 INFO L168 Benchmark]: TraceAbstraction took 1743.29 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 160.7 MB in the beginning and 110.0 MB in the end (delta: 50.7 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:37,486 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 0.55 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.33 ms. Allocated memory is still 143.7 MB. Free memory was 100.9 MB in the beginning and 91.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.84 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 91.1 MB in the beginning and 178.7 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 332.53 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 161.4 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1743.29 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 160.7 MB in the beginning and 110.0 MB in the end (delta: 50.7 MB). Peak memory consumption was 81.1 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: ((((((!(0 <= a) || !(0 == a)) || !(0 <= pa)) || !(pa <= 0)) || !(a <= 0)) || !(a == pa)) || !(b == 0)) || !(a == b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.6s, 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, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s 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, 86 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 158 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 928 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...