/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/test17.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-36cd7be
[2021-02-23 18:06:38,564 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-23 18:06:38,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-23 18:06:38,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-23 18:06:38,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-23 18:06:38,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-23 18:06:38,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-23 18:06:38,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-02-23 18:06:38,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-02-23 18:06:38,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-02-23 18:06:38,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-02-23 18:06:38,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-02-23 18:06:38,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-02-23 18:06:38,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-02-23 18:06:38,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-23 18:06:38,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-23 18:06:38,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-23 18:06:38,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-23 18:06:38,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-23 18:06:38,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-23 18:06:38,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-23 18:06:38,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-23 18:06:38,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-23 18:06:38,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-23 18:06:38,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-02-23 18:06:38,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-02-23 18:06:38,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-02-23 18:06:38,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-02-23 18:06:38,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-02-23 18:06:38,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-02-23 18:06:38,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-02-23 18:06:38,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-02-23 18:06:38,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-02-23 18:06:38,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-02-23 18:06:38,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-02-23 18:06:38,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-02-23 18:06:38,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-02-23 18:06:38,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-02-23 18:06:38,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-02-23 18:06:38,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-02-23 18:06:38,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-23 18:06:38,691 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 18:06:38,716 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-23 18:06:38,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-23 18:06:38,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-23 18:06:38,721 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-23 18:06:38,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-23 18:06:38,721 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-23 18:06:38,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-23 18:06:38,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-23 18:06:38,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-23 18:06:38,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-23 18:06:38,723 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-23 18:06:38,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-23 18:06:38,724 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-23 18:06:38,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-23 18:06:38,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-23 18:06:38,724 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2021-02-23 18:06:38,725 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-23 18:06:38,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-23 18:06:38,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-23 18:06:38,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-23 18:06:38,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-02-23 18:06:38,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-23 18:06:38,726 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-23 18:06:39,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-23 18:06:39,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-23 18:06:39,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-23 18:06:39,180 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-23 18:06:39,180 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-23 18:06:39,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test17.c
[2021-02-23 18:06:39,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3982629ae/6cc01b45f28144e4ada186ede11e6eff/FLAGd30268c6d
[2021-02-23 18:06:39,948 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-23 18:06:39,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test17.c
[2021-02-23 18:06:39,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3982629ae/6cc01b45f28144e4ada186ede11e6eff/FLAGd30268c6d
[2021-02-23 18:06:40,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3982629ae/6cc01b45f28144e4ada186ede11e6eff
[2021-02-23 18:06:40,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-23 18:06:40,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-23 18:06:40,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-23 18:06:40,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-23 18:06:40,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-23 18:06:40,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:06:40" (1/1) ...
[2021-02-23 18:06:40,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef6e53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:40, skipping insertion in model container
[2021-02-23 18:06:40,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:06:40" (1/1) ...
[2021-02-23 18:06:40,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-23 18:06:40,386 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-23 18:06:40,548 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/test17.c[377,390]
[2021-02-23 18:06:40,556 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-23 18:06:40,567 INFO L203 MainTranslator]: Completed pre-run
[2021-02-23 18:06:40,581 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/test17.c[377,390]
[2021-02-23 18:06:40,583 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-23 18:06:40,606 INFO L208 MainTranslator]: Completed translation
[2021-02-23 18:06:40,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:40 WrapperNode
[2021-02-23 18:06:40,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-23 18:06:40,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-23 18:06:40,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-23 18:06:40,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-23 18:06:40,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:40" (1/1) ...
[2021-02-23 18:06:40,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:40" (1/1) ...
[2021-02-23 18:06:40,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:40" (1/1) ...
[2021-02-23 18:06:40,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:40" (1/1) ...
[2021-02-23 18:06:40,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:40" (1/1) ...
[2021-02-23 18:06:40,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:40" (1/1) ...
[2021-02-23 18:06:40,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:40" (1/1) ...
[2021-02-23 18:06:40,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-23 18:06:40,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-23 18:06:40,650 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-23 18:06:40,650 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-23 18:06:40,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:40" (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 18:06:40,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-23 18:06:40,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-23 18:06:40,770 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-23 18:06:40,770 INFO L138 BoogieDeclarations]: Found implementation of procedure equal
[2021-02-23 18:06:40,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-23 18:06:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-23 18:06:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-23 18:06:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-23 18:06:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-23 18:06:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure equal
[2021-02-23 18:06:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-23 18:06:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-23 18:06:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-23 18:06:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-23 18:06:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-23 18:06:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-23 18:06:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-23 18:06:41,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-23 18:06:41,123 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2021-02-23 18:06:41,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:06:41 BoogieIcfgContainer
[2021-02-23 18:06:41,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-23 18:06:41,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-23 18:06:41,137 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-23 18:06:41,144 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-23 18:06:41,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:06:40" (1/3) ...
[2021-02-23 18:06:41,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7256e9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:06:41, skipping insertion in model container
[2021-02-23 18:06:41,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:40" (2/3) ...
[2021-02-23 18:06:41,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7256e9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:06:41, skipping insertion in model container
[2021-02-23 18:06:41,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:06:41" (3/3) ...
[2021-02-23 18:06:41,156 INFO L111 eAbstractionObserver]: Analyzing ICFG test17.c
[2021-02-23 18:06:41,172 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-02-23 18:06:41,183 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-23 18:06:41,258 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-23 18:06:41,300 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-23 18:06:41,300 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-23 18:06:41,300 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-02-23 18:06:41,301 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-23 18:06:41,301 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-23 18:06:41,301 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-23 18:06:41,301 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-23 18:06:41,301 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-23 18:06:41,319 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states.
[2021-02-23 18:06:41,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-02-23 18:06:41,329 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-23 18:06:41,330 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]
[2021-02-23 18:06:41,331 INFO L428 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 18:06:41,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 18:06:41,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1610863234, now seen corresponding path program 1 times
[2021-02-23 18:06:41,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-23 18:06:41,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75876157]
[2021-02-23 18:06:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 18:06:41,436 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-23 18:06:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 18:06:41,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:41,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 18:06:41,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:41,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-23 18:06:41,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:41,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-23 18:06:41,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:41,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-23 18:06:41,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:41,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 18:06:41,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-23 18:06:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 18:06:41,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:06:41,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 18:06:41,881 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 18:06:41,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75876157]
[2021-02-23 18:06:41,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-23 18:06:41,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-02-23 18:06:41,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761380637]
[2021-02-23 18:06:41,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-02-23 18:06:41,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-23 18:06:41,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-02-23 18:06:41,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-02-23 18:06:41,921 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 6 states.
[2021-02-23 18:06:42,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-23 18:06:42,263 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions.
[2021-02-23 18:06:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-02-23 18:06:42,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20
[2021-02-23 18:06:42,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-23 18:06:42,273 INFO L225 Difference]: With dead ends: 36
[2021-02-23 18:06:42,274 INFO L226 Difference]: Without dead ends: 0
[2021-02-23 18:06:42,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2021-02-23 18:06:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-02-23 18:06:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-02-23 18:06:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2021-02-23 18:06:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-02-23 18:06:42,308 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20
[2021-02-23 18:06:42,308 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-23 18:06:42,308 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-02-23 18:06:42,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2021-02-23 18:06:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-02-23 18:06:42,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-02-23 18:06:42,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-23 18:06:42,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-02-23 18:06:42,699 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed.
[2021-02-23 18:06:42,699 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed.
[2021-02-23 18:06:42,699 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed.
[2021-02-23 18:06:42,700 INFO L185 CegarLoopUtils]: At program point equalEXIT(lines 6 14) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (and (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|) (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|)))
[2021-02-23 18:06:42,700 INFO L185 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|)))
[2021-02-23 18:06:42,700 INFO L192 CegarLoopUtils]: At program point equalENTRY(lines 6 14) the Hoare annotation is: true
[2021-02-23 18:06:42,700 INFO L185 CegarLoopUtils]: At program point equalFINAL(lines 6 14) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (and (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|) (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|)))
[2021-02-23 18:06:42,700 INFO L185 CegarLoopUtils]: At program point L8(lines 6 14) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|)))
[2021-02-23 18:06:42,701 INFO L185 CegarLoopUtils]: At program point L7(lines 7 9) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (and (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|) (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|)))
[2021-02-23 18:06:42,701 INFO L185 CegarLoopUtils]: At program point L6(lines 6 14) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|)) (and (= equal_~a.base |equal_#in~b.base|) (= equal_~a.offset |equal_#in~b.offset|)))
[2021-02-23 18:06:42,701 INFO L185 CegarLoopUtils]: At program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|)))
[2021-02-23 18:06:42,702 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true
[2021-02-23 18:06:42,702 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true
[2021-02-23 18:06:42,702 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-02-23 18:06:42,702 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true
[2021-02-23 18:06:42,702 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true
[2021-02-23 18:06:42,703 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true
[2021-02-23 18:06:42,703 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2021-02-23 18:06:42,703 INFO L192 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true
[2021-02-23 18:06:42,703 INFO L192 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: true
[2021-02-23 18:06:42,703 INFO L185 CegarLoopUtils]: 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)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~b~0 |old(~b~0)|))
[2021-02-23 18:06:42,704 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true
[2021-02-23 18:06:42,704 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true
[2021-02-23 18:06:42,704 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true
[2021-02-23 18:06:42,704 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true
[2021-02-23 18:06:42,705 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-02-23 18:06:42,705 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2021-02-23 18:06:42,705 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true
[2021-02-23 18:06:42,705 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 18 21) the Hoare annotation is: true
[2021-02-23 18:06:42,705 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 18 21) the Hoare annotation is: true
[2021-02-23 18:06:42,706 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 18 21) the Hoare annotation is: true
[2021-02-23 18:06:42,706 INFO L192 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: true
[2021-02-23 18:06:42,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:06:42 BoogieIcfgContainer
[2021-02-23 18:06:42,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-23 18:06:42,729 INFO L168 Benchmark]: Toolchain (without parser) took 2391.75 ms. Allocated memory was 177.2 MB in the beginning and 230.7 MB in the end (delta: 53.5 MB). Free memory was 153.5 MB in the beginning and 193.1 MB in the end (delta: -39.6 MB). Peak memory consumption was 95.6 MB. Max. memory is 8.0 GB.
[2021-02-23 18:06:42,730 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 177.2 MB. Free memory was 151.8 MB in the beginning and 151.6 MB in the end (delta: 210.0 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-23 18:06:42,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.19 ms. Allocated memory is still 177.2 MB. Free memory was 152.5 MB in the beginning and 143.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB.
[2021-02-23 18:06:42,732 INFO L168 Benchmark]: Boogie Preprocessor took 40.07 ms. Allocated memory is still 177.2 MB. Free memory was 143.3 MB in the beginning and 142.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-02-23 18:06:42,733 INFO L168 Benchmark]: RCFGBuilder took 479.91 ms. Allocated memory is still 177.2 MB. Free memory was 142.0 MB in the beginning and 128.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
[2021-02-23 18:06:42,734 INFO L168 Benchmark]: TraceAbstraction took 1595.06 ms. Allocated memory was 177.2 MB in the beginning and 230.7 MB in the end (delta: 53.5 MB). Free memory was 127.9 MB in the beginning and 193.1 MB in the end (delta: -65.3 MB). Peak memory consumption was 70.4 MB. Max. memory is 8.0 GB.
[2021-02-23 18:06:42,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22 ms. Allocated memory is still 177.2 MB. Free memory was 151.8 MB in the beginning and 151.6 MB in the end (delta: 210.0 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 253.19 ms. Allocated memory is still 177.2 MB. Free memory was 152.5 MB in the beginning and 143.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 40.07 ms. Allocated memory is still 177.2 MB. Free memory was 143.3 MB in the beginning and 142.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 479.91 ms. Allocated memory is still 177.2 MB. Free memory was 142.0 MB in the beginning and 128.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1595.06 ms. Allocated memory was 177.2 MB in the beginning and 230.7 MB in the end (delta: 53.5 MB). Free memory was 127.9 MB in the beginning and 193.1 MB in the end (delta: -65.3 MB). Peak memory consumption was 70.4 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 12]: 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: !(a == b) || !(a == b)
- ProcedureContractResult [Line: 6]: Procedure Contract for equal
Derived contract for procedure equal: (!(a == b) || (((a == b && a == b) && b == a) && a == b)) || !(a == b)
- ProcedureContractResult [Line: 18]: Procedure Contract for main
Derived contract for procedure main: 1
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 15 SDslu, 56 SDs, 0 SdLazy, 26 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 29 LocationsWithAnnotation, 29 PreInvPairs, 36 NumberOfFragments, 170 HoareAnnotationTreeSize, 29 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 29 FomulaSimplificationsInter, 390 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...