/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_union.c_1.i
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This is Ultimate 0.1.25-267fbe0
[2020-07-18 05:13:59,211 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-18 05:13:59,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-18 05:13:59,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-18 05:13:59,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-18 05:13:59,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-18 05:13:59,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-18 05:13:59,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-18 05:13:59,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-18 05:13:59,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-18 05:13:59,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-18 05:13:59,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-18 05:13:59,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-18 05:13:59,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
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[2020-07-18 05:13:59,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-18 05:13:59,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-18 05:13:59,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-18 05:13:59,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-18 05:13:59,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-18 05:13:59,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-18 05:13:59,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-18 05:13:59,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-18 05:13:59,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-18 05:13:59,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-18 05:13:59,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-18 05:13:59,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2020-07-18 05:13:59,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-07-18 05:13:59,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-18 05:13:59,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-07-18 05:13:59,277 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-18 05:13:59,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-18 05:13:59,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-18 05:13:59,280 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-18 05:13:59,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-18 05:13:59,280 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-18 05:13:59,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-18 05:13:59,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-18 05:13:59,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-18 05:13:59,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-18 05:13:59,282 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-18 05:13:59,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-18 05:13:59,282 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-18 05:13:59,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-18 05:13:59,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-18 05:13:59,283 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2020-07-18 05:13:59,283 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-18 05:13:59,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-18 05:13:59,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-18 05:13:59,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-18 05:13:59,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-07-18 05:13:59,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-18 05:13:59,285 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true
[2020-07-18 05:13:59,587 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-18 05:13:59,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-18 05:13:59,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-18 05:13:59,614 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-18 05:13:59,614 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-18 05:13:59,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_union.c_1.i
[2020-07-18 05:13:59,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0dd3cd1d/03f4a45e9cd14190aa516451f61e9b7f/FLAGa3346703e
[2020-07-18 05:14:00,156 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-18 05:14:00,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_union.c_1.i
[2020-07-18 05:14:00,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0dd3cd1d/03f4a45e9cd14190aa516451f61e9b7f/FLAGa3346703e
[2020-07-18 05:14:00,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0dd3cd1d/03f4a45e9cd14190aa516451f61e9b7f
[2020-07-18 05:14:00,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-18 05:14:00,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-18 05:14:00,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-18 05:14:00,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-18 05:14:00,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-18 05:14:00,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:14:00" (1/1) ...
[2020-07-18 05:14:00,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd602bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:00, skipping insertion in model container
[2020-07-18 05:14:00,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:14:00" (1/1) ...
[2020-07-18 05:14:00,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-18 05:14:00,610 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-18 05:14:00,842 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-18 05:14:00,848 INFO L203 MainTranslator]: Completed pre-run
[2020-07-18 05:14:00,865 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-18 05:14:00,888 INFO L208 MainTranslator]: Completed translation
[2020-07-18 05:14:00,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:00 WrapperNode
[2020-07-18 05:14:00,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-18 05:14:00,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-18 05:14:00,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-18 05:14:00,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-18 05:14:00,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:00" (1/1) ...
[2020-07-18 05:14:00,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:00" (1/1) ...
[2020-07-18 05:14:00,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:00" (1/1) ...
[2020-07-18 05:14:00,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:00" (1/1) ...
[2020-07-18 05:14:01,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:00" (1/1) ...
[2020-07-18 05:14:01,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:00" (1/1) ...
[2020-07-18 05:14:01,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:00" (1/1) ...
[2020-07-18 05:14:01,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-18 05:14:01,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-18 05:14:01,009 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-18 05:14:01,009 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-18 05:14:01,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:00" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-18 05:14:01,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-18 05:14:01,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-18 05:14:01,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert
[2020-07-18 05:14:01,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-18 05:14:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-18 05:14:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert
[2020-07-18 05:14:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-18 05:14:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-18 05:14:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-18 05:14:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-18 05:14:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-18 05:14:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-18 05:14:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-18 05:14:01,288 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-18 05:14:01,288 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-18 05:14:01,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:14:01 BoogieIcfgContainer
[2020-07-18 05:14:01,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-18 05:14:01,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-18 05:14:01,294 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-18 05:14:01,297 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-18 05:14:01,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 05:14:00" (1/3) ...
[2020-07-18 05:14:01,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352cfd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:14:01, skipping insertion in model container
[2020-07-18 05:14:01,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:14:00" (2/3) ...
[2020-07-18 05:14:01,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352cfd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:14:01, skipping insertion in model container
[2020-07-18 05:14:01,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:14:01" (3/3) ...
[2020-07-18 05:14:01,301 INFO L109 eAbstractionObserver]: Analyzing ICFG test_union.c_1.i
[2020-07-18 05:14:01,314 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-07-18 05:14:01,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-18 05:14:01,370 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-18 05:14:01,399 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-18 05:14:01,400 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-18 05:14:01,400 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-07-18 05:14:01,400 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-18 05:14:01,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-18 05:14:01,400 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-18 05:14:01,401 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-18 05:14:01,401 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-18 05:14:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states.
[2020-07-18 05:14:01,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-07-18 05:14:01,435 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-18 05:14:01,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-18 05:14:01,436 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-18 05:14:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-18 05:14:01,441 INFO L82 PathProgramCache]: Analyzing trace with hash 242998920, now seen corresponding path program 1 times
[2020-07-18 05:14:01,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-18 05:14:01,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79124003]
[2020-07-18 05:14:01,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-07-18 05:14:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-18 05:14:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-18 05:14:01,699 INFO L280 TraceCheckUtils]: 0: Hoare triple {35#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {26#true} is VALID
[2020-07-18 05:14:01,700 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} #valid := #valid[0 := 0]; {26#true} is VALID
[2020-07-18 05:14:01,700 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} assume 0 < #StackHeapBarrier; {26#true} is VALID
[2020-07-18 05:14:01,701 INFO L280 TraceCheckUtils]: 3: Hoare triple {26#true} assume true; {26#true} is VALID
[2020-07-18 05:14:01,701 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {26#true} {26#true} #25#return; {26#true} is VALID
[2020-07-18 05:14:01,710 INFO L263 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {35#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID
[2020-07-18 05:14:01,710 INFO L280 TraceCheckUtils]: 1: Hoare triple {35#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {26#true} is VALID
[2020-07-18 05:14:01,711 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} #valid := #valid[0 := 0]; {26#true} is VALID
[2020-07-18 05:14:01,711 INFO L280 TraceCheckUtils]: 3: Hoare triple {26#true} assume 0 < #StackHeapBarrier; {26#true} is VALID
[2020-07-18 05:14:01,711 INFO L280 TraceCheckUtils]: 4: Hoare triple {26#true} assume true; {26#true} is VALID
[2020-07-18 05:14:01,712 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {26#true} {26#true} #25#return; {26#true} is VALID
[2020-07-18 05:14:01,712 INFO L263 TraceCheckUtils]: 6: Hoare triple {26#true} call #t~ret1 := main(); {26#true} is VALID
[2020-07-18 05:14:01,713 INFO L280 TraceCheckUtils]: 7: Hoare triple {26#true} SUMMARY for call ~#x~0.base, ~#x~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {26#true} is VALID
[2020-07-18 05:14:01,714 INFO L280 TraceCheckUtils]: 8: Hoare triple {26#true} SUMMARY for call write~int(0, ~#x~0.base, ~#x~0.offset, 4); srcloc: L24 {33#(= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|))} is VALID
[2020-07-18 05:14:01,717 INFO L280 TraceCheckUtils]: 9: Hoare triple {33#(= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|))} SUMMARY for call #t~mem0 := read~int(~#x~0.base, ~#x~0.offset, 4); srcloc: L25 {34#(= 0 |main_#t~mem0|)} is VALID
[2020-07-18 05:14:01,718 INFO L280 TraceCheckUtils]: 10: Hoare triple {34#(= 0 |main_#t~mem0|)} assume !(0 == #t~mem0); {27#false} is VALID
[2020-07-18 05:14:01,718 INFO L263 TraceCheckUtils]: 11: Hoare triple {27#false} call __blast_assert(); {27#false} is VALID
[2020-07-18 05:14:01,718 INFO L280 TraceCheckUtils]: 12: Hoare triple {27#false} assume !false; {27#false} is VALID
[2020-07-18 05:14:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-18 05:14:01,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79124003]
[2020-07-18 05:14:01,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-18 05:14:01,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-18 05:14:01,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721949892]
[2020-07-18 05:14:01,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13
[2020-07-18 05:14:01,735 INFO L84 Accepts]: Finished accepts. word is accepted.
[2020-07-18 05:14:01,739 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states.
[2020-07-18 05:14:01,774 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity.
[2020-07-18 05:14:01,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-18 05:14:01,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-18 05:14:01,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-18 05:14:01,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-18 05:14:01,788 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states.
[2020-07-18 05:14:01,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 05:14:01,987 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions.
[2020-07-18 05:14:01,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-18 05:14:01,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13
[2020-07-18 05:14:01,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-18 05:14:01,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2020-07-18 05:14:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions.
[2020-07-18 05:14:02,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2020-07-18 05:14:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions.
[2020-07-18 05:14:02,009 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 29 transitions.
[2020-07-18 05:14:02,057 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity.
[2020-07-18 05:14:02,064 INFO L225 Difference]: With dead ends: 30
[2020-07-18 05:14:02,064 INFO L226 Difference]: Without dead ends: 0
[2020-07-18 05:14:02,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-07-18 05:14:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-07-18 05:14:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-07-18 05:14:02,092 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa
[2020-07-18 05:14:02,093 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states.
[2020-07-18 05:14:02,093 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states.
[2020-07-18 05:14:02,094 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states.
[2020-07-18 05:14:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 05:14:02,094 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions.
[2020-07-18 05:14:02,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-07-18 05:14:02,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-18 05:14:02,095 INFO L83 IsIncluded]: Finished isIncluded. Language is included
[2020-07-18 05:14:02,095 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states.
[2020-07-18 05:14:02,095 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states.
[2020-07-18 05:14:02,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 05:14:02,096 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions.
[2020-07-18 05:14:02,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-07-18 05:14:02,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-18 05:14:02,097 INFO L83 IsIncluded]: Finished isIncluded. Language is included
[2020-07-18 05:14:02,097 INFO L88 GeneralOperation]: Finished isEquivalent.
[2020-07-18 05:14:02,097 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa
[2020-07-18 05:14:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-07-18 05:14:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-07-18 05:14:02,099 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13
[2020-07-18 05:14:02,099 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-18 05:14:02,100 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-07-18 05:14:02,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-18 05:14:02,100 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions.
[2020-07-18 05:14:02,100 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity.
[2020-07-18 05:14:02,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-07-18 05:14:02,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-18 05:14:02,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-07-18 05:14:02,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-07-18 05:14:02,249 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-07-18 05:14:02,249 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true
[2020-07-18 05:14:02,249 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-07-18 05:14:02,250 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)|))
[2020-07-18 05:14:02,250 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true
[2020-07-18 05:14:02,250 INFO L271 CegarLoopResult]: At program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: true
[2020-07-18 05:14:02,250 INFO L271 CegarLoopResult]: At program point __blast_assertEXIT(lines 4 7) the Hoare annotation is: true
[2020-07-18 05:14:02,251 INFO L271 CegarLoopResult]: At program point __blast_assertFINAL(lines 4 7) the Hoare annotation is: true
[2020-07-18 05:14:02,251 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true
[2020-07-18 05:14:02,251 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true
[2020-07-18 05:14:02,251 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-07-18 05:14:02,251 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-07-18 05:14:02,252 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true
[2020-07-18 05:14:02,252 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 23 31) the Hoare annotation is: (= |#valid| |old(#valid)|)
[2020-07-18 05:14:02,252 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) (= 0 |main_#t~mem0|))
[2020-07-18 05:14:02,252 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|))
[2020-07-18 05:14:02,253 INFO L264 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: false
[2020-07-18 05:14:02,253 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 23 31) the Hoare annotation is: true
[2020-07-18 05:14:02,253 INFO L271 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true
[2020-07-18 05:14:02,253 INFO L264 CegarLoopResult]: At program point L27-3(line 27) the Hoare annotation is: (and (= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) (= 0 |main_#t~mem0|))
[2020-07-18 05:14:02,254 INFO L264 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|))
[2020-07-18 05:14:02,254 INFO L264 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|))
[2020-07-18 05:14:02,254 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 23 31) the Hoare annotation is: true
[2020-07-18 05:14:02,266 INFO L163 areAnnotationChecker]: CFG has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing.
[2020-07-18 05:14:02,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 05:14:02 BoogieIcfgContainer
[2020-07-18 05:14:02,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-18 05:14:02,279 INFO L168 Benchmark]: Toolchain (without parser) took 1715.63 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 100.9 MB in the beginning and 88.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB.
[2020-07-18 05:14:02,280 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 143.1 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-18 05:14:02,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.73 ms. Allocated memory is still 143.1 MB. Free memory was 100.5 MB in the beginning and 90.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
[2020-07-18 05:14:02,282 INFO L168 Benchmark]: Boogie Preprocessor took 119.03 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 90.8 MB in the beginning and 178.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
[2020-07-18 05:14:02,283 INFO L168 Benchmark]: RCFGBuilder took 284.00 ms. Allocated memory is still 199.8 MB. Free memory was 178.0 MB in the beginning and 162.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB.
[2020-07-18 05:14:02,284 INFO L168 Benchmark]: TraceAbstraction took 981.86 ms. Allocated memory is still 199.8 MB. Free memory was 162.1 MB in the beginning and 88.4 MB in the end (delta: 73.7 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB.
[2020-07-18 05:14:02,288 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 0.25 ms. Allocated memory is still 143.1 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 322.73 ms. Allocated memory is still 143.1 MB. Free memory was 100.5 MB in the beginning and 90.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 119.03 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 90.8 MB in the beginning and 178.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 284.00 ms. Allocated memory is still 199.8 MB. Free memory was 178.0 MB in the beginning and 162.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 981.86 ms. Allocated memory is still 199.8 MB. Free memory was 162.1 MB in the beginning and 88.4 MB in the end (delta: 73.7 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 6]: 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
- ProcedureContractResult [Line: 4]: Procedure Contract for __blast_assert
Derived contract for procedure __blast_assert: 1
- ProcedureContractResult [Line: 23]: Procedure Contract for main
Derived contract for procedure main: 1
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 5 SDslu, 27 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 23 LocationsWithAnnotation, 23 PreInvPairs, 30 NumberOfFragments, 72 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 23 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 348 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...