/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/test20.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-b8ad66e
[2020-10-23 20:35:04,342 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-23 20:35:04,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-23 20:35:04,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-23 20:35:04,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2020-10-23 20:35:04,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-23 20:35:04,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-23 20:35:04,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-23 20:35:04,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-23 20:35:04,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-23 20:35:04,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
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[2020-10-23 20:35:04,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2020-10-23 20:35:04,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2020-10-23 20:35:04,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-23 20:35:04,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-10-23 20:35:04,516 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-23 20:35:04,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-23 20:35:04,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-23 20:35:04,522 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-23 20:35:04,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-23 20:35:04,522 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-23 20:35:04,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-23 20:35:04,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-23 20:35:04,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-23 20:35:04,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-23 20:35:04,524 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-23 20:35:04,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-23 20:35:04,524 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-23 20:35:04,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-23 20:35:04,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-23 20:35:04,525 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2020-10-23 20:35:04,525 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-23 20:35:04,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-23 20:35:04,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 20:35:04,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-23 20:35:04,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-10-23 20:35:04,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-23 20:35:04,527 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-10-23 20:35:04,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-23 20:35:04,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-23 20:35:04,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-23 20:35:04,971 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-23 20:35:04,972 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-23 20:35:04,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test20.c
[2020-10-23 20:35:05,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025ccbcfc/c281ded1306f4c68a77de010103425c5/FLAGf9e0c531d
[2020-10-23 20:35:05,744 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-23 20:35:05,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test20.c
[2020-10-23 20:35:05,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025ccbcfc/c281ded1306f4c68a77de010103425c5/FLAGf9e0c531d
[2020-10-23 20:35:06,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025ccbcfc/c281ded1306f4c68a77de010103425c5
[2020-10-23 20:35:06,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-23 20:35:06,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-23 20:35:06,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-23 20:35:06,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-23 20:35:06,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-23 20:35:06,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:06" (1/1) ...
[2020-10-23 20:35:06,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68282c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:06, skipping insertion in model container
[2020-10-23 20:35:06,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:06" (1/1) ...
[2020-10-23 20:35:06,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-23 20:35:06,155 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-10-23 20:35:06,297 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 20:35:06,308 INFO L203 MainTranslator]: Completed pre-run
[2020-10-23 20:35:06,324 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 20:35:06,341 INFO L208 MainTranslator]: Completed translation
[2020-10-23 20:35:06,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:06 WrapperNode
[2020-10-23 20:35:06,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-23 20:35:06,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-23 20:35:06,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-23 20:35:06,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-23 20:35:06,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:06" (1/1) ...
[2020-10-23 20:35:06,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:06" (1/1) ...
[2020-10-23 20:35:06,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:06" (1/1) ...
[2020-10-23 20:35:06,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:06" (1/1) ...
[2020-10-23 20:35:06,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:06" (1/1) ...
[2020-10-23 20:35:06,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:06" (1/1) ...
[2020-10-23 20:35:06,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:06" (1/1) ...
[2020-10-23 20:35:06,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-23 20:35:06,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-23 20:35:06,379 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-23 20:35:06,379 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-23 20:35:06,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:06" (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
[2020-10-23 20:35:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-23 20:35:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-23 20:35:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-23 20:35:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure equal
[2020-10-23 20:35:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-10-23 20:35:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-10-23 20:35:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-23 20:35:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-23 20:35:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-23 20:35:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure equal
[2020-10-23 20:35:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-10-23 20:35:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-23 20:35:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-23 20:35:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-23 20:35:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-10-23 20:35:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-10-23 20:35:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-23 20:35:06,990 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-23 20:35:06,990 INFO L298 CfgBuilder]: Removed 0 assume(true) statements.
[2020-10-23 20:35:06,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:06 BoogieIcfgContainer
[2020-10-23 20:35:06,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-23 20:35:06,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-23 20:35:07,000 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-23 20:35:07,003 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-23 20:35:07,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:35:06" (1/3) ...
[2020-10-23 20:35:07,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcf5d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:07, skipping insertion in model container
[2020-10-23 20:35:07,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:06" (2/3) ...
[2020-10-23 20:35:07,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcf5d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:07, skipping insertion in model container
[2020-10-23 20:35:07,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:06" (3/3) ...
[2020-10-23 20:35:07,008 INFO L111 eAbstractionObserver]: Analyzing ICFG test20.c
[2020-10-23 20:35:07,042 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-23 20:35:07,049 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-23 20:35:07,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-23 20:35:07,110 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-23 20:35:07,110 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-23 20:35:07,111 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-10-23 20:35:07,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-23 20:35:07,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-23 20:35:07,111 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-23 20:35:07,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-23 20:35:07,111 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-23 20:35:07,132 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states.
[2020-10-23 20:35:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-23 20:35:07,145 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 20:35:07,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 20:35:07,146 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:35:07,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:35:07,156 INFO L82 PathProgramCache]: Analyzing trace with hash 908165075, now seen corresponding path program 1 times
[2020-10-23 20:35:07,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:35:07,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044083012]
[2020-10-23 20:35:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:35:07,259 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:35:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:35:07,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:35:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:35:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 20:35:07,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044083012]
[2020-10-23 20:35:07,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 20:35:07,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-10-23 20:35:07,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085153777]
[2020-10-23 20:35:07,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-23 20:35:07,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 20:35:07,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-23 20:35:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-10-23 20:35:07,755 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 8 states.
[2020-10-23 20:35:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 20:35:08,182 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions.
[2020-10-23 20:35:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-10-23 20:35:08,184 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22
[2020-10-23 20:35:08,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 20:35:08,191 INFO L225 Difference]: With dead ends: 40
[2020-10-23 20:35:08,191 INFO L226 Difference]: Without dead ends: 0
[2020-10-23 20:35:08,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156
[2020-10-23 20:35:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-10-23 20:35:08,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-10-23 20:35:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-10-23 20:35:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-10-23 20:35:08,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22
[2020-10-23 20:35:08,222 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 20:35:08,222 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-10-23 20:35:08,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-23 20:35:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-10-23 20:35:08,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-10-23 20:35:08,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-23 20:35:08,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-10-23 20:35:08,759 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true
[2020-10-23 20:35:08,760 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true
[2020-10-23 20:35:08,760 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true
[2020-10-23 20:35:08,760 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true
[2020-10-23 20:35:08,761 INFO L270 CegarLoopResult]: At program point equalEXIT(lines 6 14) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= (select |#valid| |~#a~0.base|) 1)) (and (not (= equal_~a.base |equal_#in~b.base|)) (not (= equal_~a.base equal_~b.base))) (= |~#b~0.base| |~#a~0.base|))
[2020-10-23 20:35:08,761 INFO L270 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1)))
[2020-10-23 20:35:08,761 INFO L277 CegarLoopResult]: At program point equalENTRY(lines 6 14) the Hoare annotation is: true
[2020-10-23 20:35:08,761 INFO L270 CegarLoopResult]: At program point equalFINAL(lines 6 14) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= (select |#valid| |~#a~0.base|) 1)) (and (not (= equal_~a.base |equal_#in~b.base|)) (not (= equal_~a.base equal_~b.base))) (= |~#b~0.base| |~#a~0.base|))
[2020-10-23 20:35:08,762 INFO L270 CegarLoopResult]: At program point L8(lines 6 14) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1)))
[2020-10-23 20:35:08,762 INFO L270 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= (select |#valid| |~#a~0.base|) 1)) (and (not (= equal_~a.base |equal_#in~b.base|)) (not (= equal_~a.base equal_~b.base))) (= |~#b~0.base| |~#a~0.base|))
[2020-10-23 20:35:08,762 INFO L270 CegarLoopResult]: At program point L6(lines 6 14) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= equal_~a.base |equal_#in~b.base|)) (not (= (select |#valid| |~#a~0.base|) 1)) (= |~#b~0.base| |~#a~0.base|))
[2020-10-23 20:35:08,762 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true
[2020-10-23 20:35:08,762 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true
[2020-10-23 20:35:08,763 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-10-23 20:35:08,763 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true
[2020-10-23 20:35:08,763 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true
[2020-10-23 20:35:08,763 INFO L277 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true
[2020-10-23 20:35:08,763 INFO L270 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 16) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|)))
[2020-10-23 20:35:08,764 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= (select |#valid| |~#a~0.base|) 1)
[2020-10-23 20:35:08,764 INFO L270 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (= (select |#valid| |~#a~0.base|) 1)
[2020-10-23 20:35:08,764 INFO L270 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|)))
[2020-10-23 20:35:08,764 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))
[2020-10-23 20:35:08,765 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true
[2020-10-23 20:35:08,765 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true
[2020-10-23 20:35:08,765 INFO L270 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|)))
[2020-10-23 20:35:08,765 INFO L270 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|)))
[2020-10-23 20:35:08,766 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|)))
[2020-10-23 20:35:08,766 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-10-23 20:35:08,766 INFO L270 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|)))
[2020-10-23 20:35:08,766 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 18 21) the Hoare annotation is: true
[2020-10-23 20:35:08,766 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 18 21) the Hoare annotation is: true
[2020-10-23 20:35:08,767 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 18 21) the Hoare annotation is: true
[2020-10-23 20:35:08,767 INFO L277 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true
[2020-10-23 20:35:08,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:35:08 BoogieIcfgContainer
[2020-10-23 20:35:08,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-23 20:35:08,791 INFO L168 Benchmark]: Toolchain (without parser) took 2677.50 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 127.7 MB in the beginning and 158.2 MB in the end (delta: -30.5 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB.
[2020-10-23 20:35:08,792 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 20:35:08,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.92 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-10-23 20:35:08,794 INFO L168 Benchmark]: Boogie Preprocessor took 34.58 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2020-10-23 20:35:08,795 INFO L168 Benchmark]: RCFGBuilder took 614.39 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 103.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
[2020-10-23 20:35:08,797 INFO L168 Benchmark]: TraceAbstraction took 1790.56 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 102.6 MB in the beginning and 158.2 MB in the end (delta: -55.6 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB.
[2020-10-23 20:35:08,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 223.92 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 34.58 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 614.39 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 103.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1790.56 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 102.6 MB in the beginning and 158.2 MB in the end (delta: -55.6 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 6]: Loop Invariant
Derived loop invariant: (a == b || a == b) || !(\valid[a] == 1)
- ProcedureContractResult [Line: 3]: Procedure Contract for reach_error
Derived contract for procedure reach_error: 1
- ProcedureContractResult [Line: 6]: Procedure Contract for equal
Derived contract for procedure equal: ((a == b || !(\valid[a] == 1)) || (!(a == b) && !(a == b))) || b == a
- ProcedureContractResult [Line: 18]: Procedure Contract for main
Derived contract for procedure main: 1
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 31 SDslu, 60 SDs, 0 SdLazy, 50 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 33 LocationsWithAnnotation, 33 PreInvPairs, 40 NumberOfFragments, 240 HoareAnnotationTreeSize, 33 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 533 FormulaSimplificationTreeSizeReductionInter, 0.3s 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...