/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test01.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-36cd7be
[2021-02-23 18:06:11,193 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-23 18:06:11,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-23 18:06:11,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-23 18:06:11,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-23 18:06:11,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-23 18:06:11,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2021-02-23 18:06:11,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
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[2021-02-23 18:06:11,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-23 18:06:11,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-23 18:06:11,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-23 18:06:11,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-23 18:06:11,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-23 18:06:11,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-23 18:06:11,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-23 18:06:11,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-23 18:06:11,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-23 18:06:11,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-02-23 18:06:11,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2021-02-23 18:06:11,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
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[2021-02-23 18:06:11,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
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[2021-02-23 18:06:11,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-23 18:06:11,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-23 18:06:11,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2021-02-23 18:06:11,319 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-23 18:06:11,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-23 18:06:11,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-23 18:06:11,334 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-23 18:06:11,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-23 18:06:11,335 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-23 18:06:11,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-23 18:06:11,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-23 18:06:11,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-23 18:06:11,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-23 18:06:11,336 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-23 18:06:11,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-23 18:06:11,336 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-23 18:06:11,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-23 18:06:11,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-23 18:06:11,337 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2021-02-23 18:06:11,337 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-23 18:06:11,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-23 18:06:11,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-23 18:06:11,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-23 18:06:11,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-02-23 18:06:11,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-23 18:06:11,339 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-23 18:06:11,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-23 18:06:11,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-23 18:06:11,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-23 18:06:11,816 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-23 18:06:11,817 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-23 18:06:11,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test01.c
[2021-02-23 18:06:11,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e97ba6008/8648b9d0f14c438fb515da805bd1764e/FLAG0007d8803
[2021-02-23 18:06:12,518 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-23 18:06:12,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test01.c
[2021-02-23 18:06:12,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e97ba6008/8648b9d0f14c438fb515da805bd1764e/FLAG0007d8803
[2021-02-23 18:06:12,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e97ba6008/8648b9d0f14c438fb515da805bd1764e
[2021-02-23 18:06:12,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-23 18:06:12,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-23 18:06:12,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-23 18:06:12,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-23 18:06:12,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-23 18:06:12,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:06:12" (1/1) ...
[2021-02-23 18:06:12,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea41701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:12, skipping insertion in model container
[2021-02-23 18:06:12,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:06:12" (1/1) ...
[2021-02-23 18:06:12,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-23 18:06:12,952 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-23 18:06:13,099 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test01.c[393,406]
[2021-02-23 18:06:13,104 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-23 18:06:13,115 INFO L203 MainTranslator]: Completed pre-run
[2021-02-23 18:06:13,130 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test01.c[393,406]
[2021-02-23 18:06:13,131 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-23 18:06:13,147 INFO L208 MainTranslator]: Completed translation
[2021-02-23 18:06:13,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:13 WrapperNode
[2021-02-23 18:06:13,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-23 18:06:13,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-23 18:06:13,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-23 18:06:13,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-23 18:06:13,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:13" (1/1) ...
[2021-02-23 18:06:13,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:13" (1/1) ...
[2021-02-23 18:06:13,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:13" (1/1) ...
[2021-02-23 18:06:13,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:13" (1/1) ...
[2021-02-23 18:06:13,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:13" (1/1) ...
[2021-02-23 18:06:13,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:13" (1/1) ...
[2021-02-23 18:06:13,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:13" (1/1) ...
[2021-02-23 18:06:13,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-23 18:06:13,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-23 18:06:13,204 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-23 18:06:13,205 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-23 18:06:13,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:13" (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
[2021-02-23 18:06:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-23 18:06:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-23 18:06:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-23 18:06:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-23 18:06:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-23 18:06:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-23 18:06:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-23 18:06:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-23 18:06:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-23 18:06:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-23 18:06:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-23 18:06:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-23 18:06:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-23 18:06:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-23 18:06:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-23 18:06:13,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-23 18:06:13,700 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2021-02-23 18:06:13,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:06:13 BoogieIcfgContainer
[2021-02-23 18:06:13,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-23 18:06:13,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-23 18:06:13,706 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-23 18:06:13,710 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-23 18:06:13,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:06:12" (1/3) ...
[2021-02-23 18:06:13,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596decaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:06:13, skipping insertion in model container
[2021-02-23 18:06:13,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:13" (2/3) ...
[2021-02-23 18:06:13,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596decaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:06:13, skipping insertion in model container
[2021-02-23 18:06:13,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:06:13" (3/3) ...
[2021-02-23 18:06:13,715 INFO L111 eAbstractionObserver]: Analyzing ICFG test01.c
[2021-02-23 18:06:13,723 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-02-23 18:06:13,729 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-23 18:06:13,754 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-23 18:06:13,805 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-23 18:06:13,805 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-23 18:06:13,805 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-02-23 18:06:13,805 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-23 18:06:13,805 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-23 18:06:13,806 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-23 18:06:13,806 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-23 18:06:13,806 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-23 18:06:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states.
[2021-02-23 18:06:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-02-23 18:06:13,848 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-23 18:06:13,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-23 18:06:13,849 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 18:06:13,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 18:06:13,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1239481523, now seen corresponding path program 1 times
[2021-02-23 18:06:13,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-23 18:06:13,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605081994]
[2021-02-23 18:06:13,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 18:06:13,968 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-23 18:06:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 18:06:14,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:14,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 18:06:14,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:14,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-23 18:06:14,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:14,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-23 18:06:14,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:14,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-23 18:06:14,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:14,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-23 18:06:14,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:14,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 18:06:14,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-23 18:06:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 18:06:14,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:14,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 18:06:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-23 18:06:14,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605081994]
[2021-02-23 18:06:14,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-23 18:06:14,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-02-23 18:06:14,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184765048]
[2021-02-23 18:06:14,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-02-23 18:06:14,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-23 18:06:14,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-02-23 18:06:14,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-02-23 18:06:14,319 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 7 states.
[2021-02-23 18:06:14,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-23 18:06:14,540 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions.
[2021-02-23 18:06:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-02-23 18:06:14,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18
[2021-02-23 18:06:14,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-23 18:06:14,579 INFO L225 Difference]: With dead ends: 38
[2021-02-23 18:06:14,579 INFO L226 Difference]: Without dead ends: 0
[2021-02-23 18:06:14,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132
[2021-02-23 18:06:14,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-02-23 18:06:14,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-02-23 18:06:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2021-02-23 18:06:14,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-02-23 18:06:14,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18
[2021-02-23 18:06:14,669 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-23 18:06:14,669 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-02-23 18:06:14,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2021-02-23 18:06:14,670 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-02-23 18:06:14,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-02-23 18:06:14,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-23 18:06:14,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-02-23 18:06:15,021 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed.
[2021-02-23 18:06:15,021 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed.
[2021-02-23 18:06:15,021 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed.
[2021-02-23 18:06:15,022 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true
[2021-02-23 18:06:15,022 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true
[2021-02-23 18:06:15,022 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-02-23 18:06:15,022 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true
[2021-02-23 18:06:15,023 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true
[2021-02-23 18:06:15,023 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true
[2021-02-23 18:06:15,023 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|))
[2021-02-23 18:06:15,023 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true
[2021-02-23 18:06:15,023 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true
[2021-02-23 18:06:15,024 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true
[2021-02-23 18:06:15,024 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true
[2021-02-23 18:06:15,024 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-02-23 18:06:15,024 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2021-02-23 18:06:15,024 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true
[2021-02-23 18:06:15,025 INFO L185 CegarLoopUtils]: At program point L7-6(line 7) the Hoare annotation is: false
[2021-02-23 18:06:15,025 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: false
[2021-02-23 18:06:15,025 INFO L185 CegarLoopUtils]: At program point L7-7(line 7) the Hoare annotation is: false
[2021-02-23 18:06:15,025 INFO L185 CegarLoopUtils]: At program point L7-8(line 7) the Hoare annotation is: false
[2021-02-23 18:06:15,026 INFO L185 CegarLoopUtils]: At program point L7-9(line 7) the Hoare annotation is: false
[2021-02-23 18:06:15,026 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 6 19) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|))
[2021-02-23 18:06:15,026 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 6 19) the Hoare annotation is: (not (= main_~p1~0.base main_~p2~0.base))
[2021-02-23 18:06:15,026 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: false
[2021-02-23 18:06:15,027 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: false
[2021-02-23 18:06:15,027 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|)) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1))
[2021-02-23 18:06:15,027 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 6 19) the Hoare annotation is: (not (= main_~p1~0.base main_~p2~0.base))
[2021-02-23 18:06:15,028 INFO L185 CegarLoopUtils]: At program point L12(lines 6 19) the Hoare annotation is: false
[2021-02-23 18:06:15,028 INFO L185 CegarLoopUtils]: At program point L11(lines 11 13) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|)) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1))
[2021-02-23 18:06:15,028 INFO L185 CegarLoopUtils]: At program point L9(line 9) the Hoare annotation is: (and (not (= main_~p1~0.base |main_~#b~0.base|)) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1))
[2021-02-23 18:06:15,028 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= (select |#valid| |main_~#a~0.base|) 1)
[2021-02-23 18:06:15,029 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1))
[2021-02-23 18:06:15,029 INFO L185 CegarLoopUtils]: At program point L7-2(line 7) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|)) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1))
[2021-02-23 18:06:15,029 INFO L185 CegarLoopUtils]: At program point L7-3(line 7) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|)) (not (= |main_~#b~0.base| |main_~#a~0.base|)))
[2021-02-23 18:06:15,030 INFO L185 CegarLoopUtils]: At program point L7-4(line 7) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|)))
[2021-02-23 18:06:15,030 INFO L185 CegarLoopUtils]: At program point L7-5(line 7) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|)))
[2021-02-23 18:06:15,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:06:15 BoogieIcfgContainer
[2021-02-23 18:06:15,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-23 18:06:15,052 INFO L168 Benchmark]: Toolchain (without parser) took 2141.51 ms. Allocated memory was 156.2 MB in the beginning and 201.3 MB in the end (delta: 45.1 MB). Free memory was 113.7 MB in the beginning and 156.4 MB in the end (delta: -42.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB.
[2021-02-23 18:06:15,054 INFO L168 Benchmark]: CDTParser took 1.16 ms. Allocated memory is still 156.2 MB. Free memory was 130.0 MB in the beginning and 129.9 MB in the end (delta: 106.1 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-23 18:06:15,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.05 ms. Allocated memory is still 156.2 MB. Free memory was 112.5 MB in the beginning and 103.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB.
[2021-02-23 18:06:15,056 INFO L168 Benchmark]: Boogie Preprocessor took 50.13 ms. Allocated memory is still 156.2 MB. Free memory was 103.4 MB in the beginning and 140.4 MB in the end (delta: -37.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB.
[2021-02-23 18:06:15,057 INFO L168 Benchmark]: RCFGBuilder took 498.97 ms. Allocated memory is still 156.2 MB. Free memory was 140.4 MB in the beginning and 127.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB.
[2021-02-23 18:06:15,058 INFO L168 Benchmark]: TraceAbstraction took 1344.68 ms. Allocated memory was 156.2 MB in the beginning and 201.3 MB in the end (delta: 45.1 MB). Free memory was 127.3 MB in the beginning and 156.4 MB in the end (delta: -29.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB.
[2021-02-23 18:06:15,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.16 ms. Allocated memory is still 156.2 MB. Free memory was 130.0 MB in the beginning and 129.9 MB in the end (delta: 106.1 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 225.05 ms. Allocated memory is still 156.2 MB. Free memory was 112.5 MB in the beginning and 103.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 50.13 ms. Allocated memory is still 156.2 MB. Free memory was 103.4 MB in the beginning and 140.4 MB in the end (delta: -37.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 498.97 ms. Allocated memory is still 156.2 MB. Free memory was 140.4 MB in the beginning and 127.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1344.68 ms. Allocated memory was 156.2 MB in the beginning and 201.3 MB in the end (delta: 45.1 MB). Free memory was 127.3 MB in the beginning and 156.4 MB in the end (delta: -29.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 17]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 6]: Loop Invariant
Derived loop invariant: 0
- ProcedureContractResult [Line: 6]: Procedure Contract for main
Derived contract for procedure main: !(p1 == p2)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 19 SDslu, 61 SDs, 0 SdLazy, 42 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 34 LocationsWithAnnotation, 34 PreInvPairs, 38 NumberOfFragments, 181 HoareAnnotationTreeSize, 34 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 34 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...