/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/volatile_alias.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:30:50,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:30:50,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:30:50,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:30:50,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:30:50,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:30:50,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:30:50,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:30:50,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:30:50,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:30:50,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:30:50,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:30:50,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:30:50,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:30:50,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:30:50,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:30:50,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:30:50,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:30:50,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:30:50,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:30:50,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:30:50,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:30:50,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:30:50,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:30:50,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:30:50,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:30:50,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:30:50,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:30:50,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:30:50,319 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:30:50,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:30:50,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:30:50,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:30:50,321 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:30:50,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:30:50,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:30:50,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:30:50,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:30:50,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:30:50,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:30:50,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:30:50,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:30:50,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:30:50,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:30:50,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:30:50,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:30:50,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:30:50,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:30:50,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:30:50,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:30:50,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:30:50,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:30:50,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:30:50,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:30:50,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:30:50,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:30:50,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:30:50,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:30:50,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:30:50,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:30:50,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:30:50,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:30:50,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:30:50,674 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:30:50,674 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-07-17 22:30:50,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31348f080/445930e5709041d8ada352cde10d2a2f/FLAGd9f97a706 [2020-07-17 22:30:51,195 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:30:51,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-07-17 22:30:51,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31348f080/445930e5709041d8ada352cde10d2a2f/FLAGd9f97a706 [2020-07-17 22:30:51,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31348f080/445930e5709041d8ada352cde10d2a2f [2020-07-17 22:30:51,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:30:51,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:30:51,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:30:51,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:30:51,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:30:51,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:30:51" (1/1) ... [2020-07-17 22:30:51,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d599b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:51, skipping insertion in model container [2020-07-17 22:30:51,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:30:51" (1/1) ... [2020-07-17 22:30:51,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:30:51,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:30:51,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:30:51,779 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:30:51,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:30:51,813 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:30:51,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:51 WrapperNode [2020-07-17 22:30:51,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:30:51,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:30:51,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:30:51,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:30:51,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:51" (1/1) ... [2020-07-17 22:30:51,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:51" (1/1) ... [2020-07-17 22:30:51,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:51" (1/1) ... [2020-07-17 22:30:51,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:51" (1/1) ... [2020-07-17 22:30:51,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:51" (1/1) ... [2020-07-17 22:30:51,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:51" (1/1) ... [2020-07-17 22:30:51,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:51" (1/1) ... [2020-07-17 22:30:51,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:30:51,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:30:51,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:30:51,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:30:51,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:30:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:30:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:30:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:30:52,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:30:52,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:30:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 22:30:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 22:30:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:30:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:30:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:30:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:30:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:30:52,268 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:30:52,268 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:30:52,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:30:52 BoogieIcfgContainer [2020-07-17 22:30:52,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:30:52,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:30:52,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:30:52,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:30:52,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:30:51" (1/3) ... [2020-07-17 22:30:52,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fc640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:30:52, skipping insertion in model container [2020-07-17 22:30:52,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:51" (2/3) ... [2020-07-17 22:30:52,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fc640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:30:52, skipping insertion in model container [2020-07-17 22:30:52,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:30:52" (3/3) ... [2020-07-17 22:30:52,291 INFO L109 eAbstractionObserver]: Analyzing ICFG volatile_alias.i [2020-07-17 22:30:52,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:30:52,326 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:30:52,337 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:30:52,358 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:30:52,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:30:52,359 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:30:52,359 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:30:52,359 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:30:52,359 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:30:52,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:30:52,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:30:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-07-17 22:30:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-17 22:30:52,381 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:30:52,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:30:52,382 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:30:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:30:52,388 INFO L82 PathProgramCache]: Analyzing trace with hash 2096341077, now seen corresponding path program 1 times [2020-07-17 22:30:52,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:30:52,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939087235] [2020-07-17 22:30:52,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:30:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:30:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:30:52,661 INFO L280 TraceCheckUtils]: 0: Hoare triple {23#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {17#true} is VALID [2020-07-17 22:30:52,663 INFO L280 TraceCheckUtils]: 1: Hoare triple {17#true} assume true; {17#true} is VALID [2020-07-17 22:30:52,664 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {17#true} {17#true} #18#return; {17#true} is VALID [2020-07-17 22:30:52,668 INFO L263 TraceCheckUtils]: 0: Hoare triple {17#true} call ULTIMATE.init(); {23#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:30:52,668 INFO L280 TraceCheckUtils]: 1: Hoare triple {23#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {17#true} is VALID [2020-07-17 22:30:52,669 INFO L280 TraceCheckUtils]: 2: Hoare triple {17#true} assume true; {17#true} is VALID [2020-07-17 22:30:52,669 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {17#true} {17#true} #18#return; {17#true} is VALID [2020-07-17 22:30:52,669 INFO L263 TraceCheckUtils]: 4: Hoare triple {17#true} call #t~ret2 := main(); {17#true} is VALID [2020-07-17 22:30:52,673 INFO L280 TraceCheckUtils]: 5: Hoare triple {17#true} call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(4, ~#a~0.base, ~#a~0.offset, 4);~p~0.base, ~p~0.offset := ~#a~0.base, ~#a~0.offset;~p~0.base, ~p~0.offset := ~#a~0.base, ~#a~0.offset;call #t~mem0 := read~int(~#a~0.base, ~#a~0.offset, 4);call write~int(#t~mem0 - 4, ~#a~0.base, ~#a~0.offset, 4);havoc #t~mem0;call #t~mem1 := read~int(~p~0.base, ~p~0.offset, 4); {22#(= 0 |main_#t~mem1|)} is VALID [2020-07-17 22:30:52,673 INFO L280 TraceCheckUtils]: 6: Hoare triple {22#(= 0 |main_#t~mem1|)} assume 0 != #t~mem1;havoc #t~mem1; {18#false} is VALID [2020-07-17 22:30:52,674 INFO L280 TraceCheckUtils]: 7: Hoare triple {18#false} assume !false; {18#false} is VALID [2020-07-17 22:30:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:30:52,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939087235] [2020-07-17 22:30:52,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:30:52,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 22:30:52,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746023738] [2020-07-17 22:30:52,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-17 22:30:52,686 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:30:52,690 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-17 22:30:52,712 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:30:52,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 22:30:52,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:30:52,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 22:30:52,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:30:52,722 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-07-17 22:30:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:52,818 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-07-17 22:30:52,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 22:30:52,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-17 22:30:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:30:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:30:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-07-17 22:30:52,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:30:52,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-07-17 22:30:52,837 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 18 transitions. [2020-07-17 22:30:52,873 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:30:52,881 INFO L225 Difference]: With dead ends: 19 [2020-07-17 22:30:52,881 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 22:30:52,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:30:52,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 22:30:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 22:30:52,908 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:30:52,908 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-17 22:30:52,909 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:30:52,909 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:30:52,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:52,910 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:30:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:30:52,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:52,910 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:30:52,911 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:30:52,911 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:30:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:52,911 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:30:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:30:52,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:52,912 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:30:52,912 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:30:52,913 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:30:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 22:30:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 22:30:52,915 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-07-17 22:30:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:30:52,915 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 22:30:52,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 22:30:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:30:52,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:52,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:30:52,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 22:30:52,971 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:30:52,972 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-17 22:30:52,972 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:30:52,972 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:30:52,973 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 22:30:52,973 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 22:30:52,973 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:30:52,973 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-07-17 22:30:52,974 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 6 16) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-17 22:30:52,974 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-07-17 22:30:52,974 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 6 16) no Hoare annotation was computed. [2020-07-17 22:30:52,974 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-07-17 22:30:52,974 INFO L268 CegarLoopResult]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2020-07-17 22:30:52,974 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 6 16) no Hoare annotation was computed. [2020-07-17 22:30:52,979 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:30:52,981 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-17 22:30:52,981 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:30:52,981 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:30:52,982 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-17 22:30:52,982 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-17 22:30:52,982 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:30:52,983 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:30:52,983 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-17 22:30:52,983 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-17 22:30:52,983 WARN L170 areAnnotationChecker]: L12-2 has no Hoare annotation [2020-07-17 22:30:52,983 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:30:52,984 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:30:52,984 INFO L163 areAnnotationChecker]: CFG has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:30:52,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:30:52 BoogieIcfgContainer [2020-07-17 22:30:52,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:30:52,990 INFO L168 Benchmark]: Toolchain (without parser) took 1438.85 ms. Allocated memory was 142.1 MB in the beginning and 198.2 MB in the end (delta: 56.1 MB). Free memory was 100.1 MB in the beginning and 115.0 MB in the end (delta: -14.9 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:52,991 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 22:30:52,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.73 ms. Allocated memory is still 142.1 MB. Free memory was 99.9 MB in the beginning and 90.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:52,993 INFO L168 Benchmark]: Boogie Preprocessor took 121.50 ms. Allocated memory was 142.1 MB in the beginning and 198.2 MB in the end (delta: 56.1 MB). Free memory was 90.1 MB in the beginning and 176.6 MB in the end (delta: -86.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:52,994 INFO L168 Benchmark]: RCFGBuilder took 336.33 ms. Allocated memory is still 198.2 MB. Free memory was 176.6 MB in the beginning and 161.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:52,995 INFO L168 Benchmark]: TraceAbstraction took 705.04 ms. Allocated memory is still 198.2 MB. Free memory was 161.0 MB in the beginning and 115.0 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:52,998 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 142.1 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.73 ms. Allocated memory is still 142.1 MB. Free memory was 99.9 MB in the beginning and 90.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.50 ms. Allocated memory was 142.1 MB in the beginning and 198.2 MB in the end (delta: 56.1 MB). Free memory was 90.1 MB in the beginning and 176.6 MB in the end (delta: -86.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.33 ms. Allocated memory is still 198.2 MB. Free memory was 176.6 MB in the beginning and 161.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 705.04 ms. Allocated memory is still 198.2 MB. Free memory was 161.0 MB in the beginning and 115.0 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 12 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 15 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 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...