/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/trex03-1.c


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


This is Ultimate 0.2.1-dev-36cd7be
[2021-02-23 13:52:57,616 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-02-23 13:52:57,620 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2021-02-23 13:52:57,680 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-23 13:52:57,684 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2021-02-23 13:52:57,714 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-23 13:52:57,728 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-23 13:52:57,733 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-23 13:52:57,734 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-23 13:52:57,743 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2021-02-23 13:52:57,752 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-23 13:52:57,754 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-23 13:52:57,756 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-02-23 13:52:57,758 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-23 13:52:57,769 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-02-23 13:52:57,770 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2021-02-23 13:52:57,781 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-23 13:52:57,783 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-02-23 13:52:57,784 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
[2021-02-23 13:52:57,837 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-02-23 13:52:57,838 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-23 13:52:57,842 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-02-23 13:52:57,842 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-02-23 13:52:57,842 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-02-23 13:52:57,843 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-23 13:52:57,843 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-02-23 13:52:57,843 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-02-23 13:52:57,843 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-02-23 13:52:57,844 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-02-23 13:52:57,845 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-02-23 13:52:57,845 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-23 13:52:57,845 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-02-23 13:52:57,845 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-02-23 13:52:57,846 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-02-23 13:52:57,846 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-02-23 13:52:57,846 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-02-23 13:52:57,846 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-23 13:52:57,847 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-02-23 13:52:57,847 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-02-23 13:52:57,847 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-23 13:52:57,847 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-23 13:52:57,848 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-02-23 13:52:57,848 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-02-23 13:52:57,848 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-02-23 13:52:57,848 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-02-23 13:52:57,848 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-23 13:52:57,848 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-02-23 13:52:57,849 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-23 13:52:58,220 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-23 13:52:58,247 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-23 13:52:58,250 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-23 13:52:58,251 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-02-23 13:52:58,254 INFO  L275        PluginConnector]: CDTParser initialized
[2021-02-23 13:52:58,255 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c
[2021-02-23 13:52:58,338 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4d50e296/d74e199102974bea891a20c4c554fbbd/FLAG3d532388e
[2021-02-23 13:52:58,966 INFO  L306              CDTParser]: Found 1 translation units.
[2021-02-23 13:52:58,966 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c
[2021-02-23 13:52:58,973 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4d50e296/d74e199102974bea891a20c4c554fbbd/FLAG3d532388e
[2021-02-23 13:52:59,361 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4d50e296/d74e199102974bea891a20c4c554fbbd
[2021-02-23 13:52:59,364 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-23 13:52:59,380 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-23 13:52:59,384 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-23 13:52:59,385 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-23 13:52:59,388 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-23 13:52:59,390 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:59" (1/1) ...
[2021-02-23 13:52:59,393 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bd9772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59, skipping insertion in model container
[2021-02-23 13:52:59,393 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:59" (1/1) ...
[2021-02-23 13:52:59,402 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-02-23 13:52:59,424 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-02-23 13:52:59,591 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/trex03-1.c[320,333]
[2021-02-23 13:52:59,606 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-02-23 13:52:59,614 INFO  L203         MainTranslator]: Completed pre-run
[2021-02-23 13:52:59,625 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/trex03-1.c[320,333]
[2021-02-23 13:52:59,631 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-02-23 13:52:59,647 INFO  L208         MainTranslator]: Completed translation
[2021-02-23 13:52:59,647 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59 WrapperNode
[2021-02-23 13:52:59,647 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-23 13:52:59,649 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-23 13:52:59,649 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-23 13:52:59,649 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-02-23 13:52:59,660 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ...
[2021-02-23 13:52:59,660 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ...
[2021-02-23 13:52:59,668 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ...
[2021-02-23 13:52:59,668 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ...
[2021-02-23 13:52:59,674 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ...
[2021-02-23 13:52:59,678 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ...
[2021-02-23 13:52:59,680 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ...
[2021-02-23 13:52:59,682 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-23 13:52:59,683 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-23 13:52:59,683 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-02-23 13:52:59,683 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-02-23 13:52:59,684 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (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 13:52:59,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-23 13:52:59,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-23 13:52:59,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-23 13:52:59,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-02-23 13:52:59,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2021-02-23 13:52:59,783 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2021-02-23 13:52:59,783 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-23 13:52:59,783 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-23 13:52:59,783 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-23 13:52:59,783 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-02-23 13:52:59,783 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2021-02-23 13:52:59,784 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2021-02-23 13:52:59,784 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2021-02-23 13:52:59,784 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-23 13:52:59,784 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-23 13:52:59,784 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-23 13:52:59,785 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-02-23 13:52:59,785 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-02-23 13:52:59,785 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-23 13:53:00,056 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-23 13:53:00,056 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2021-02-23 13:53:00,058 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:53:00 BoogieIcfgContainer
[2021-02-23 13:53:00,059 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-23 13:53:00,061 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-23 13:53:00,062 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-02-23 13:53:00,065 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-02-23 13:53:00,066 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:52:59" (1/3) ...
[2021-02-23 13:53:00,067 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cbc5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:53:00, skipping insertion in model container
[2021-02-23 13:53:00,067 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (2/3) ...
[2021-02-23 13:53:00,067 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cbc5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:53:00, skipping insertion in model container
[2021-02-23 13:53:00,068 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:53:00" (3/3) ...
[2021-02-23 13:53:00,069 INFO  L111   eAbstractionObserver]: Analyzing ICFG trex03-1.c
[2021-02-23 13:53:00,085 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-02-23 13:53:00,096 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-23 13:53:00,144 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-23 13:53:00,236 INFO  L376      AbstractCegarLoop]: Interprodecural is true
[2021-02-23 13:53:00,236 INFO  L377      AbstractCegarLoop]: Hoare is true
[2021-02-23 13:53:00,236 INFO  L378      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-02-23 13:53:00,236 INFO  L379      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-23 13:53:00,237 INFO  L380      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-23 13:53:00,237 INFO  L381      AbstractCegarLoop]: Difference is false
[2021-02-23 13:53:00,237 INFO  L382      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-23 13:53:00,237 INFO  L386      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-23 13:53:00,254 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states.
[2021-02-23 13:53:00,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-02-23 13:53:00,260 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-23 13:53:00,261 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-23 13:53:00,261 INFO  L428      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 13:53:00,272 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 13:53:00,272 INFO  L82        PathProgramCache]: Analyzing trace with hash -1016564801, now seen corresponding path program 1 times
[2021-02-23 13:53:00,283 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-23 13:53:00,283 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457985910]
[2021-02-23 13:53:00,283 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 13:53:00,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:53:00,532 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:53:00,535 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:53:00,536 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:53:00,537 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:53:00,639 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-23 13:53:00,660 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:53:00,675 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:53:00,676 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:53:00,679 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 13:53:00,680 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457985910]
[2021-02-23 13:53:00,681 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-23 13:53:00,681 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-02-23 13:53:00,682 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777017434]
[2021-02-23 13:53:00,687 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-02-23 13:53:00,687 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-23 13:53:00,703 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-02-23 13:53:00,704 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-23 13:53:00,706 INFO  L87              Difference]: Start difference. First operand 22 states. Second operand 3 states.
[2021-02-23 13:53:00,769 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-23 13:53:00,769 INFO  L93              Difference]: Finished difference Result 34 states and 39 transitions.
[2021-02-23 13:53:00,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-02-23 13:53:00,772 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 11
[2021-02-23 13:53:00,772 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-23 13:53:00,779 INFO  L225             Difference]: With dead ends: 34
[2021-02-23 13:53:00,779 INFO  L226             Difference]: Without dead ends: 15
[2021-02-23 13:53:00,783 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-23 13:53:00,801 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2021-02-23 13:53:00,819 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2021-02-23 13:53:00,821 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2021-02-23 13:53:00,821 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions.
[2021-02-23 13:53:00,823 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11
[2021-02-23 13:53:00,823 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-23 13:53:00,824 INFO  L480      AbstractCegarLoop]: Abstraction has 15 states and 17 transitions.
[2021-02-23 13:53:00,824 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2021-02-23 13:53:00,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions.
[2021-02-23 13:53:00,824 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-02-23 13:53:00,825 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-23 13:53:00,825 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-23 13:53:00,825 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-23 13:53:00,825 INFO  L428      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 13:53:00,826 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 13:53:00,826 INFO  L82        PathProgramCache]: Analyzing trace with hash -1031341137, now seen corresponding path program 1 times
[2021-02-23 13:53:00,827 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-23 13:53:00,827 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578419878]
[2021-02-23 13:53:00,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 13:53:00,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-23 13:53:00,866 INFO  L223             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-23 13:53:00,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-23 13:53:00,912 INFO  L223             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-23 13:53:00,939 INFO  L173   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-02-23 13:53:00,939 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2021-02-23 13:53:00,940 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-23 13:53:00,969 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:53:00 BoogieIcfgContainer
[2021-02-23 13:53:00,969 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-23 13:53:00,971 INFO  L168              Benchmark]: Toolchain (without parser) took 1604.48 ms. Allocated memory is still 181.4 MB. Free memory was 156.2 MB in the beginning and 136.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB.
[2021-02-23 13:53:00,972 INFO  L168              Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 181.4 MB. Free memory is still 153.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-23 13:53:00,973 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 263.68 ms. Allocated memory is still 181.4 MB. Free memory was 155.1 MB in the beginning and 145.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2021-02-23 13:53:00,974 INFO  L168              Benchmark]: Boogie Preprocessor took 33.14 ms. Allocated memory is still 181.4 MB. Free memory was 145.8 MB in the beginning and 144.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-02-23 13:53:00,975 INFO  L168              Benchmark]: RCFGBuilder took 376.20 ms. Allocated memory is still 181.4 MB. Free memory was 144.2 MB in the beginning and 130.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
[2021-02-23 13:53:00,976 INFO  L168              Benchmark]: TraceAbstraction took 908.09 ms. Allocated memory is still 181.4 MB. Free memory was 129.7 MB in the beginning and 136.2 MB in the end (delta: -6.5 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-23 13:53:00,979 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.21 ms. Allocated memory is still 181.4 MB. Free memory is still 153.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 263.68 ms. Allocated memory is still 181.4 MB. Free memory was 155.1 MB in the beginning and 145.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 33.14 ms. Allocated memory is still 181.4 MB. Free memory was 145.8 MB in the beginning and 144.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 376.20 ms. Allocated memory is still 181.4 MB. Free memory was 144.2 MB in the beginning and 130.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 908.09 ms. Allocated memory is still 181.4 MB. Free memory was 129.7 MB in the beginning and 136.2 MB in the end (delta: -6.5 MB). There was no memory consumed. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 7]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L17]              unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint();
[L17]              unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint();
[L17]              unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint();
[L18]              unsigned int d1=1, d2=1, d3=1;
[L19]              _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool();
[L19]              _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool();
[L21]  COND FALSE  !(x1>0 && x2>0 && x3>0)
       VAL         [c1=4294967299, c2=4294967301, d1=1, d2=1, d3=1, x1=4294967297, x2=0, x3=0]
[L30]  CALL        __VERIFIER_assert(x1==0 && x2==0 && x3==0)
       VAL         [\old(cond)=0]
[L6]   COND TRUE   !(cond)
       VAL         [\old(cond)=0, cond=0]
[L7]               reach_error()
       VAL         [\old(cond)=0, cond=0]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 15 SDslu, 3 SDs, 0 SdLazy, 4 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 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 incorrect!
Received shutdown request...