/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-2.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.1-dev-b7b32d2
[2021-02-21 16:26:17,513 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-02-21 16:26:17,517 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-21 16:26:17,574 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-21 16:26:17,575 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-21 16:26:17,579 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-21 16:26:17,583 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2021-02-21 16:26:17,617 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2021-02-21 16:26:17,621 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-21 16:26:17,623 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-21 16:26:17,626 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-21 16:26:17,627 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-21 16:26:17,648 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-21 16:26:17,653 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-21 16:26:17,655 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-21 16:26:17,659 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-21 16:26:17,660 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-02-21 16:26:17,662 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-21 16:26:17,666 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-02-21 16:26:17,666 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-02-21 16:26:17,666 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-02-21 16:26:17,667 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
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[2021-02-21 16:26:17,669 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2021-02-21 16:26:17,675 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-21 16:26:17,676 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-02-21 16:26:17,677 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2021-02-21 16:26:17,702 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-02-21 16:26:17,702 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-21 16:26:17,704 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-02-21 16:26:17,704 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-02-21 16:26:17,704 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-02-21 16:26:17,705 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-21 16:26:17,705 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-02-21 16:26:17,705 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-02-21 16:26:17,705 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-02-21 16:26:17,705 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-02-21 16:26:17,706 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-02-21 16:26:17,706 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-21 16:26:17,706 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-02-21 16:26:17,706 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-02-21 16:26:17,707 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-02-21 16:26:17,707 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-02-21 16:26:17,707 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-02-21 16:26:17,707 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-21 16:26:17,708 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-02-21 16:26:17,708 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-02-21 16:26:17,708 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-21 16:26:17,708 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-21 16:26:17,708 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-02-21 16:26:17,709 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-02-21 16:26:17,709 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-02-21 16:26:17,709 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-02-21 16:26:17,709 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-21 16:26:17,709 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-02-21 16:26:17,709 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-21 16:26:18,130 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-21 16:26:18,153 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-21 16:26:18,156 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-21 16:26:18,157 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-02-21 16:26:18,158 INFO  L275        PluginConnector]: CDTParser initialized
[2021-02-21 16:26:18,159 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c
[2021-02-21 16:26:18,241 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c933ae2/ebee59a6101c4d5d91cf1a94051fed60/FLAG592181aba
[2021-02-21 16:26:18,815 INFO  L306              CDTParser]: Found 1 translation units.
[2021-02-21 16:26:18,816 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c
[2021-02-21 16:26:18,823 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c933ae2/ebee59a6101c4d5d91cf1a94051fed60/FLAG592181aba
[2021-02-21 16:26:19,179 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c933ae2/ebee59a6101c4d5d91cf1a94051fed60
[2021-02-21 16:26:19,183 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-21 16:26:19,199 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-21 16:26:19,203 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-21 16:26:19,203 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-21 16:26:19,207 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-21 16:26:19,208 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:19" (1/1) ...
[2021-02-21 16:26:19,210 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3026c2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19, skipping insertion in model container
[2021-02-21 16:26:19,211 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:19" (1/1) ...
[2021-02-21 16:26:19,219 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-02-21 16:26:19,240 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-02-21 16:26:19,443 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c[414,427]
[2021-02-21 16:26:19,462 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-02-21 16:26:19,473 INFO  L203         MainTranslator]: Completed pre-run
[2021-02-21 16:26:19,490 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c[414,427]
[2021-02-21 16:26:19,504 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-02-21 16:26:19,523 INFO  L208         MainTranslator]: Completed translation
[2021-02-21 16:26:19,524 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19 WrapperNode
[2021-02-21 16:26:19,524 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-21 16:26:19,525 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-21 16:26:19,525 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-21 16:26:19,525 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-02-21 16:26:19,538 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ...
[2021-02-21 16:26:19,538 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ...
[2021-02-21 16:26:19,545 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ...
[2021-02-21 16:26:19,546 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ...
[2021-02-21 16:26:19,551 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ...
[2021-02-21 16:26:19,556 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ...
[2021-02-21 16:26:19,558 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ...
[2021-02-21 16:26:19,560 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-21 16:26:19,561 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-21 16:26:19,561 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-02-21 16:26:19,561 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-02-21 16:26:19,562 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (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
[2021-02-21 16:26:19,716 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-21 16:26:19,717 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-21 16:26:19,717 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-21 16:26:19,717 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-02-21 16:26:19,717 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-02-21 16:26:19,717 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2021-02-21 16:26:19,717 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2021-02-21 16:26:19,718 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-21 16:26:19,718 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-21 16:26:19,718 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-21 16:26:19,718 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-02-21 16:26:19,718 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-02-21 16:26:19,718 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-02-21 16:26:19,719 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2021-02-21 16:26:19,719 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2021-02-21 16:26:19,719 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-21 16:26:19,719 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-21 16:26:19,719 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-21 16:26:19,719 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-02-21 16:26:19,719 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-02-21 16:26:19,720 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-21 16:26:19,951 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-21 16:26:19,951 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2021-02-21 16:26:19,953 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:19 BoogieIcfgContainer
[2021-02-21 16:26:19,953 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-21 16:26:19,955 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-21 16:26:19,955 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-02-21 16:26:19,958 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-02-21 16:26:19,959 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:26:19" (1/3) ...
[2021-02-21 16:26:19,959 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4430e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:19, skipping insertion in model container
[2021-02-21 16:26:19,960 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (2/3) ...
[2021-02-21 16:26:19,960 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4430e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:19, skipping insertion in model container
[2021-02-21 16:26:19,960 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:19" (3/3) ...
[2021-02-21 16:26:19,962 INFO  L111   eAbstractionObserver]: Analyzing ICFG terminator_02-2.c
[2021-02-21 16:26:19,975 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-02-21 16:26:19,984 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-21 16:26:20,037 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-21 16:26:20,082 INFO  L376      AbstractCegarLoop]: Interprodecural is true
[2021-02-21 16:26:20,082 INFO  L377      AbstractCegarLoop]: Hoare is true
[2021-02-21 16:26:20,083 INFO  L378      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-02-21 16:26:20,083 INFO  L379      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-21 16:26:20,083 INFO  L380      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-21 16:26:20,083 INFO  L381      AbstractCegarLoop]: Difference is false
[2021-02-21 16:26:20,083 INFO  L382      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-21 16:26:20,083 INFO  L386      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-21 16:26:20,099 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states.
[2021-02-21 16:26:20,104 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-02-21 16:26:20,104 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-21 16:26:20,105 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-21 16:26:20,106 INFO  L428      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 16:26:20,118 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 16:26:20,118 INFO  L82        PathProgramCache]: Analyzing trace with hash 1267907657, now seen corresponding path program 1 times
[2021-02-21 16:26:20,142 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 16:26:20,143 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515112211]
[2021-02-21 16:26:20,143 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 16:26:20,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:26:20,372 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:26:20,373 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:26:20,382 WARN  L141       QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size
[2021-02-21 16:26:20,383 WARN  L147       QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1
[2021-02-21 16:26:20,386 WARN  L141       QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size
[2021-02-21 16:26:20,387 WARN  L147       QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1
[2021-02-21 16:26:20,390 WARN  L141       QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size
[2021-02-21 16:26:20,392 WARN  L147       QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size 7
[2021-02-21 16:26:20,409 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:26:20,410 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-21 16:26:20,416 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:26:20,417 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-21 16:26:20,424 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:26:20,425 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:26:20,462 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 16:26:20,469 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:26:20,484 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:26:20,484 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:26:20,489 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 16:26:20,490 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515112211]
[2021-02-21 16:26:20,491 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 16:26:20,491 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-02-21 16:26:20,492 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461291841]
[2021-02-21 16:26:20,497 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-02-21 16:26:20,497 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-21 16:26:20,512 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-02-21 16:26:20,514 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-02-21 16:26:20,516 INFO  L87              Difference]: Start difference. First operand 24 states. Second operand 6 states.
[2021-02-21 16:26:20,812 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 16:26:20,812 INFO  L93              Difference]: Finished difference Result 36 states and 44 transitions.
[2021-02-21 16:26:20,813 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-02-21 16:26:20,814 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 15
[2021-02-21 16:26:20,815 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 16:26:20,823 INFO  L225             Difference]: With dead ends: 36
[2021-02-21 16:26:20,823 INFO  L226             Difference]: Without dead ends: 0
[2021-02-21 16:26:20,828 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2021-02-21 16:26:20,848 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-02-21 16:26:20,854 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-02-21 16:26:20,855 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2021-02-21 16:26:20,855 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-02-21 16:26:20,857 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15
[2021-02-21 16:26:20,857 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-21 16:26:20,857 INFO  L480      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-02-21 16:26:20,858 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2021-02-21 16:26:20,858 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-02-21 16:26:20,858 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2021-02-21 16:26:20,859 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-21 16:26:20,861 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-02-21 16:26:21,028 INFO  L189         CegarLoopUtils]: For program point  reach_errorEXIT(line 3)  no Hoare annotation was computed.
[2021-02-21 16:26:21,028 INFO  L189         CegarLoopUtils]: For program point  reach_errorENTRY(line 3)  no Hoare annotation was computed.
[2021-02-21 16:26:21,028 INFO  L189         CegarLoopUtils]: For program point  reach_errorFINAL(line 3)  no Hoare annotation was computed.
[2021-02-21 16:26:21,028 INFO  L189         CegarLoopUtils]: For program point  ULTIMATE.initFINAL(line -1)  no Hoare annotation was computed.
[2021-02-21 16:26:21,029 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|))
[2021-02-21 16:26:21,029 INFO  L189         CegarLoopUtils]: For program point  ULTIMATE.initEXIT(line -1)  no Hoare annotation was computed.
[2021-02-21 16:26:21,029 INFO  L189         CegarLoopUtils]: For program point  ULTIMATE.startEXIT(line -1)  no Hoare annotation was computed.
[2021-02-21 16:26:21,029 INFO  L192         CegarLoopUtils]: At program point  L-1(line -1)  the Hoare annotation is:  true
[2021-02-21 16:26:21,030 INFO  L192         CegarLoopUtils]: At program point  ULTIMATE.startENTRY(line -1)  the Hoare annotation is:  true
[2021-02-21 16:26:21,030 INFO  L189         CegarLoopUtils]: For program point  ULTIMATE.startFINAL(line -1)  no Hoare annotation was computed.
[2021-02-21 16:26:21,030 INFO  L189         CegarLoopUtils]: For program point  assume_abort_if_notENTRY(lines 6 8)  no Hoare annotation was computed.
[2021-02-21 16:26:21,030 INFO  L189         CegarLoopUtils]: For program point  L7(line 7)  no Hoare annotation was computed.
[2021-02-21 16:26:21,030 INFO  L189         CegarLoopUtils]: For program point  L7-2(lines 6 8)  no Hoare annotation was computed.
[2021-02-21 16:26:21,030 INFO  L189         CegarLoopUtils]: For program point  assume_abort_if_notEXIT(lines 6 8)  no Hoare annotation was computed.
[2021-02-21 16:26:21,031 INFO  L189         CegarLoopUtils]: For program point  L29(lines 29 34)  no Hoare annotation was computed.
[2021-02-21 16:26:21,031 INFO  L192         CegarLoopUtils]: At program point  L29-2(lines 26 35)  the Hoare annotation is:  true
[2021-02-21 16:26:21,031 INFO  L189         CegarLoopUtils]: For program point  L25(line 25)  no Hoare annotation was computed.
[2021-02-21 16:26:21,031 INFO  L189         CegarLoopUtils]: For program point  mainEXIT(lines 18 40)  no Hoare annotation was computed.
[2021-02-21 16:26:21,031 INFO  L189         CegarLoopUtils]: For program point  L23(line 23)  no Hoare annotation was computed.
[2021-02-21 16:26:21,031 INFO  L189         CegarLoopUtils]: For program point  mainFINAL(lines 18 40)  no Hoare annotation was computed.
[2021-02-21 16:26:21,032 INFO  L192         CegarLoopUtils]: At program point  mainENTRY(lines 18 40)  the Hoare annotation is:  true
[2021-02-21 16:26:21,032 INFO  L189         CegarLoopUtils]: For program point  L24(line 24)  no Hoare annotation was computed.
[2021-02-21 16:26:21,032 INFO  L185         CegarLoopUtils]: At program point  L26-2(lines 26 35)  the Hoare annotation is:  (or (<= main_~z~0 100) (< 99 main_~x~0))
[2021-02-21 16:26:21,032 INFO  L189         CegarLoopUtils]: For program point  L22(line 22)  no Hoare annotation was computed.
[2021-02-21 16:26:21,032 INFO  L189         CegarLoopUtils]: For program point  L37(line 37)  no Hoare annotation was computed.
[2021-02-21 16:26:21,033 INFO  L192         CegarLoopUtils]: At program point  __VERIFIER_assertENTRY(lines 9 14)  the Hoare annotation is:  true
[2021-02-21 16:26:21,033 INFO  L189         CegarLoopUtils]: For program point  L11(line 11)  no Hoare annotation was computed.
[2021-02-21 16:26:21,033 INFO  L189         CegarLoopUtils]: For program point  L10(lines 10 12)  no Hoare annotation was computed.
[2021-02-21 16:26:21,033 INFO  L189         CegarLoopUtils]: For program point  __VERIFIER_assertEXIT(lines 9 14)  no Hoare annotation was computed.
[2021-02-21 16:26:21,033 INFO  L189         CegarLoopUtils]: For program point  L10-2(lines 9 14)  no Hoare annotation was computed.
[2021-02-21 16:26:21,034 INFO  L189         CegarLoopUtils]: For program point  __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11)  no Hoare annotation was computed.
[2021-02-21 16:26:21,045 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:26:21 BoogieIcfgContainer
[2021-02-21 16:26:21,045 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-21 16:26:21,047 INFO  L168              Benchmark]: Toolchain (without parser) took 1860.93 ms. Allocated memory was 172.0 MB in the beginning and 209.7 MB in the end (delta: 37.7 MB). Free memory was 152.0 MB in the beginning and 160.5 MB in the end (delta: -8.6 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB.
[2021-02-21 16:26:21,048 INFO  L168              Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 172.0 MB. Free memory was 143.4 MB in the beginning and 143.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-21 16:26:21,049 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 321.44 ms. Allocated memory is still 172.0 MB. Free memory was 150.9 MB in the beginning and 141.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2021-02-21 16:26:21,050 INFO  L168              Benchmark]: Boogie Preprocessor took 35.49 ms. Allocated memory is still 172.0 MB. Free memory was 141.4 MB in the beginning and 139.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-02-21 16:26:21,051 INFO  L168              Benchmark]: RCFGBuilder took 391.95 ms. Allocated memory is still 172.0 MB. Free memory was 139.9 MB in the beginning and 141.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB.
[2021-02-21 16:26:21,053 INFO  L168              Benchmark]: TraceAbstraction took 1090.48 ms. Allocated memory was 172.0 MB in the beginning and 209.7 MB in the end (delta: 37.7 MB). Free memory was 141.1 MB in the beginning and 160.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB.
[2021-02-21 16:26:21,057 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 172.0 MB. Free memory was 143.4 MB in the beginning and 143.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 321.44 ms. Allocated memory is still 172.0 MB. Free memory was 150.9 MB in the beginning and 141.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 35.49 ms. Allocated memory is still 172.0 MB. Free memory was 141.4 MB in the beginning and 139.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 391.95 ms. Allocated memory is still 172.0 MB. Free memory was 139.9 MB in the beginning and 141.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 1090.48 ms. Allocated memory was 172.0 MB in the beginning and 209.7 MB in the end (delta: 37.7 MB). Free memory was 141.1 MB in the beginning and 160.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - PositiveResult [Line: 11]: 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: 26]: Loop Invariant
    Derived loop invariant: 1
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 25 SDslu, 26 SDs, 0 SdLazy, 58 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 43 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 129 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 784 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...