/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/matrix-2.c


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


This is Ultimate 0.2.1-dev-b7b32d2
[2021-02-21 16:25:54,982 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-02-21 16:25:54,986 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-21 16:25:55,039 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-21 16:25:55,040 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-21 16:25:55,044 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-21 16:25:55,048 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2021-02-21 16:25:55,068 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2021-02-21 16:25:55,073 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-21 16:25:55,075 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-21 16:25:55,078 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-21 16:25:55,079 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-21 16:25:55,086 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-21 16:25:55,094 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2021-02-21 16:25:55,098 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-21 16:25:55,118 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-02-21 16:25:55,120 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-21 16:25:55,129 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-02-21 16:25:55,132 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
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[2021-02-21 16:25:55,141 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-21 16:25:55,142 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-02-21 16:25:55,143 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 16:25:55,197 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-02-21 16:25:55,197 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-21 16:25:55,202 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-02-21 16:25:55,202 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-02-21 16:25:55,203 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-02-21 16:25:55,203 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-21 16:25:55,203 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-02-21 16:25:55,203 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-02-21 16:25:55,204 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-02-21 16:25:55,204 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-02-21 16:25:55,205 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-02-21 16:25:55,206 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-21 16:25:55,206 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-02-21 16:25:55,206 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-02-21 16:25:55,206 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-02-21 16:25:55,206 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-02-21 16:25:55,207 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-02-21 16:25:55,207 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-21 16:25:55,207 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-02-21 16:25:55,207 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-02-21 16:25:55,208 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-21 16:25:55,208 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-21 16:25:55,208 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-02-21 16:25:55,208 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-02-21 16:25:55,209 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-02-21 16:25:55,209 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-02-21 16:25:55,209 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-21 16:25:55,209 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-02-21 16:25:55,209 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-21 16:25:55,658 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-21 16:25:55,692 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-21 16:25:55,696 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-21 16:25:55,697 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-02-21 16:25:55,700 INFO  L275        PluginConnector]: CDTParser initialized
[2021-02-21 16:25:55,701 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-2.c
[2021-02-21 16:25:55,774 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96363c97a/62ff69b117734c2e85b1f7d2f83be065/FLAGbd1628271
[2021-02-21 16:25:56,346 INFO  L306              CDTParser]: Found 1 translation units.
[2021-02-21 16:25:56,347 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c
[2021-02-21 16:25:56,355 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96363c97a/62ff69b117734c2e85b1f7d2f83be065/FLAGbd1628271
[2021-02-21 16:25:56,704 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96363c97a/62ff69b117734c2e85b1f7d2f83be065
[2021-02-21 16:25:56,708 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-21 16:25:56,722 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-21 16:25:56,727 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-21 16:25:56,728 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-21 16:25:56,731 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-21 16:25:56,733 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:56" (1/1) ...
[2021-02-21 16:25:56,735 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b96f890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:56, skipping insertion in model container
[2021-02-21 16:25:56,735 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:56" (1/1) ...
[2021-02-21 16:25:56,745 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-02-21 16:25:56,767 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-02-21 16:25:56,925 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/matrix-2.c[320,333]
[2021-02-21 16:25:56,947 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-02-21 16:25:56,957 INFO  L203         MainTranslator]: Completed pre-run
[2021-02-21 16:25:56,972 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/matrix-2.c[320,333]
[2021-02-21 16:25:56,986 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-02-21 16:25:57,008 INFO  L208         MainTranslator]: Completed translation
[2021-02-21 16:25:57,009 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57 WrapperNode
[2021-02-21 16:25:57,009 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-21 16:25:57,010 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-21 16:25:57,010 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-21 16:25:57,012 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-02-21 16:25:57,028 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ...
[2021-02-21 16:25:57,029 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ...
[2021-02-21 16:25:57,051 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ...
[2021-02-21 16:25:57,051 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ...
[2021-02-21 16:25:57,061 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ...
[2021-02-21 16:25:57,067 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ...
[2021-02-21 16:25:57,069 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ...
[2021-02-21 16:25:57,071 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-21 16:25:57,072 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-21 16:25:57,072 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-02-21 16:25:57,072 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-02-21 16:25:57,073 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (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 16:25:57,167 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-21 16:25:57,168 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-21 16:25:57,168 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-21 16:25:57,168 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-02-21 16:25:57,168 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2021-02-21 16:25:57,168 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2021-02-21 16:25:57,168 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-21 16:25:57,169 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-21 16:25:57,169 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-21 16:25:57,169 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-02-21 16:25:57,169 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2021-02-21 16:25:57,169 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-02-21 16:25:57,169 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2021-02-21 16:25:57,169 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-02-21 16:25:57,170 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-02-21 16:25:57,170 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-21 16:25:57,170 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-21 16:25:57,170 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-21 16:25:57,170 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-21 16:25:57,465 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-21 16:25:57,466 INFO  L299             CfgBuilder]: Removed 4 assume(true) statements.
[2021-02-21 16:25:57,468 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:57 BoogieIcfgContainer
[2021-02-21 16:25:57,468 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-21 16:25:57,470 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-21 16:25:57,470 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-02-21 16:25:57,474 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-02-21 16:25:57,474 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:56" (1/3) ...
[2021-02-21 16:25:57,475 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64054ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:57, skipping insertion in model container
[2021-02-21 16:25:57,475 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (2/3) ...
[2021-02-21 16:25:57,476 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64054ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:57, skipping insertion in model container
[2021-02-21 16:25:57,476 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:57" (3/3) ...
[2021-02-21 16:25:57,478 INFO  L111   eAbstractionObserver]: Analyzing ICFG matrix-2.c
[2021-02-21 16:25:57,486 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-02-21 16:25:57,495 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-21 16:25:57,547 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-21 16:25:57,602 INFO  L376      AbstractCegarLoop]: Interprodecural is true
[2021-02-21 16:25:57,602 INFO  L377      AbstractCegarLoop]: Hoare is true
[2021-02-21 16:25:57,603 INFO  L378      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-02-21 16:25:57,603 INFO  L379      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-21 16:25:57,603 INFO  L380      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-21 16:25:57,603 INFO  L381      AbstractCegarLoop]: Difference is false
[2021-02-21 16:25:57,603 INFO  L382      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-21 16:25:57,603 INFO  L386      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-21 16:25:57,626 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states.
[2021-02-21 16:25:57,633 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-02-21 16:25:57,634 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-21 16:25:57,635 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-21 16:25:57,635 INFO  L428      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 16:25:57,643 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 16:25:57,643 INFO  L82        PathProgramCache]: Analyzing trace with hash -691068696, now seen corresponding path program 1 times
[2021-02-21 16:25:57,655 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 16:25:57,656 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421949890]
[2021-02-21 16:25:57,657 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 16:25:57,847 ERROR L270   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-02-21 16:25:57,848 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781287346]
[2021-02-21 16:25:57,849 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-21 16:25:58,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:25:58,070 INFO  L263         TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-02-21 16:25:58,077 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-02-21 16:25:58,096 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,097 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,098 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,099 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,103 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,104 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,105 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,105 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,107 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,108 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,109 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,109 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,110 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,111 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,111 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,112 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,113 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,113 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,114 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,115 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,115 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,116 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,117 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,117 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,119 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,119 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,120 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,120 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,121 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,122 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,122 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,123 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,124 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,124 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,125 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,126 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,126 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,127 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,128 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,128 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,129 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,130 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 16:25:58,131 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,131 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 16:25:58,132 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,133 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 16:25:58,133 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,134 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 16:25:58,152 WARN  L141       QuantifierPusher]: treesize reduction 1, result has 91.7 percent of original size
[2021-02-21 16:25:58,154 WARN  L147       QuantifierPusher]: treesize reduction 1, result has 91.7 percent of original size 11
[2021-02-21 16:25:58,158 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,168 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12
[2021-02-21 16:25:58,169 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,169 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,170 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,171 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,177 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,178 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,178 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,179 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,180 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,180 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,181 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,181 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,183 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,184 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13
[2021-02-21 16:25:58,186 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,233 WARN  L159       QuantifierPusher]: Ignoring assumption.
[2021-02-21 16:25:58,237 WARN  L141       QuantifierPusher]: treesize reduction 7, result has 81.1 percent of original size
[2021-02-21 16:25:58,239 WARN  L147       QuantifierPusher]: treesize reduction 7, result has 81.1 percent of original size 30
[2021-02-21 16:25:58,241 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14
[2021-02-21 16:25:58,244 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,261 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31
[2021-02-21 16:25:58,261 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,262 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,263 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,263 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,264 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,264 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,265 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,265 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,266 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,267 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,267 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,268 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,268 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,269 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,270 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,270 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,271 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,271 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,272 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,272 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,273 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,273 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,274 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,275 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,275 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,276 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,276 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,277 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,281 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 16:25:58,281 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421949890]
[2021-02-21 16:25:58,282 WARN  L332   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-02-21 16:25:58,282 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781287346]
[2021-02-21 16:25:58,283 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 16:25:58,283 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-02-21 16:25:58,287 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29195085]
[2021-02-21 16:25:58,292 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-02-21 16:25:58,292 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-21 16:25:58,307 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-02-21 16:25:58,309 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-02-21 16:25:58,311 INFO  L87              Difference]: Start difference. First operand 29 states. Second operand 4 states.
[2021-02-21 16:25:58,411 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 16:25:58,412 INFO  L93              Difference]: Finished difference Result 68 states and 100 transitions.
[2021-02-21 16:25:58,412 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-02-21 16:25:58,414 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 14
[2021-02-21 16:25:58,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 16:25:58,422 INFO  L225             Difference]: With dead ends: 68
[2021-02-21 16:25:58,423 INFO  L226             Difference]: Without dead ends: 35
[2021-02-21 16:25:58,426 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-02-21 16:25:58,444 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2021-02-21 16:25:58,469 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25.
[2021-02-21 16:25:58,470 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2021-02-21 16:25:58,471 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions.
[2021-02-21 16:25:58,473 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14
[2021-02-21 16:25:58,473 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-21 16:25:58,473 INFO  L480      AbstractCegarLoop]: Abstraction has 25 states and 29 transitions.
[2021-02-21 16:25:58,474 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-02-21 16:25:58,474 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions.
[2021-02-21 16:25:58,475 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-02-21 16:25:58,475 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-21 16:25:58,475 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-21 16:25:58,690 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2021-02-21 16:25:58,691 INFO  L428      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 16:25:58,693 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 16:25:58,694 INFO  L82        PathProgramCache]: Analyzing trace with hash 1002836895, now seen corresponding path program 1 times
[2021-02-21 16:25:58,694 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 16:25:58,695 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571756454]
[2021-02-21 16:25:58,695 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 16:25:58,729 ERROR L270   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-02-21 16:25:58,730 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284033827]
[2021-02-21 16:25:58,730 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-21 16:25:58,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:25:58,812 INFO  L263         TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-02-21 16:25:58,816 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-02-21 16:25:58,818 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,820 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,821 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,822 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,822 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,824 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,824 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,825 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,825 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,826 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,826 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,827 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,827 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,828 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,828 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,829 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,830 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,830 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,831 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,831 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,832 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,832 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,833 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,833 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,834 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,834 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,835 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,836 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,836 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,836 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,837 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,837 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,838 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,839 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,839 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,840 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,840 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,841 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,841 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,842 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,842 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,843 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,843 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,844 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,844 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,845 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,845 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,846 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,846 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,847 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 16:25:58,847 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,848 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 16:25:58,848 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,849 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 16:25:58,849 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,850 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 16:25:58,854 WARN  L141       QuantifierPusher]: treesize reduction 1, result has 91.7 percent of original size
[2021-02-21 16:25:58,855 WARN  L147       QuantifierPusher]: treesize reduction 1, result has 91.7 percent of original size 11
[2021-02-21 16:25:58,856 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,857 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12
[2021-02-21 16:25:58,858 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,859 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,859 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,860 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,865 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,865 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,866 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,866 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,867 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,867 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,868 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,868 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,869 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,870 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,870 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,870 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,871 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,871 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,872 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,872 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,873 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,874 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,874 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,875 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,875 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,875 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,876 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,876 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,877 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,877 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,878 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,878 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,879 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,879 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,880 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,880 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 16:25:58,882 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,882 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13
[2021-02-21 16:25:58,883 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,925 WARN  L159       QuantifierPusher]: Ignoring assumption.
[2021-02-21 16:25:58,928 WARN  L141       QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size
[2021-02-21 16:25:58,931 WARN  L147       QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size 34
[2021-02-21 16:25:58,935 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14
[2021-02-21 16:25:58,938 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,948 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35
[2021-02-21 16:25:58,949 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,951 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,952 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,953 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,956 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,958 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,959 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,959 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,960 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,960 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,961 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,961 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,961 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,962 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,964 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,965 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,965 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,966 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,967 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,968 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,969 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:25:58,970 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:25:58,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 16:25:58,971 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571756454]
[2021-02-21 16:25:58,971 WARN  L332   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-02-21 16:25:58,972 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284033827]
[2021-02-21 16:25:58,972 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 16:25:58,972 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-02-21 16:25:58,972 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957068757]
[2021-02-21 16:25:58,976 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-02-21 16:25:58,977 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-21 16:25:58,978 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-02-21 16:25:58,984 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-02-21 16:25:58,984 INFO  L87              Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states.
[2021-02-21 16:25:59,049 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 16:25:59,050 INFO  L93              Difference]: Finished difference Result 57 states and 72 transitions.
[2021-02-21 16:25:59,050 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-02-21 16:25:59,050 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 17
[2021-02-21 16:25:59,051 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 16:25:59,052 INFO  L225             Difference]: With dead ends: 57
[2021-02-21 16:25:59,052 INFO  L226             Difference]: Without dead ends: 32
[2021-02-21 16:25:59,053 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-02-21 16:25:59,054 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2021-02-21 16:25:59,059 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27.
[2021-02-21 16:25:59,059 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2021-02-21 16:25:59,060 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions.
[2021-02-21 16:25:59,060 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17
[2021-02-21 16:25:59,060 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-21 16:25:59,060 INFO  L480      AbstractCegarLoop]: Abstraction has 27 states and 31 transitions.
[2021-02-21 16:25:59,061 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-02-21 16:25:59,061 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions.
[2021-02-21 16:25:59,061 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-02-21 16:25:59,062 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-21 16:25:59,062 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]
[2021-02-21 16:25:59,276 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-21 16:25:59,277 INFO  L428      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 16:25:59,278 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 16:25:59,278 INFO  L82        PathProgramCache]: Analyzing trace with hash -230396703, now seen corresponding path program 1 times
[2021-02-21 16:25:59,279 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 16:25:59,279 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618735134]
[2021-02-21 16:25:59,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 16:25:59,303 ERROR L270   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-02-21 16:25:59,304 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470392332]
[2021-02-21 16:25:59,304 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-21 16:25:59,391 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-21 16:25:59,391 INFO  L223             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-21 16:25:59,417 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-21 16:25:59,418 INFO  L223             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-21 16:25:59,468 INFO  L173   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-02-21 16:25:59,468 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2021-02-21 16:25:59,669 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-21 16:25:59,715 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:59 BoogieIcfgContainer
[2021-02-21 16:25:59,715 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-21 16:25:59,716 INFO  L168              Benchmark]: Toolchain (without parser) took 3005.85 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 49.3 MB in the end (delta: 77.1 MB). Peak memory consumption was 78.4 MB. Max. memory is 8.0 GB.
[2021-02-21 16:25:59,717 INFO  L168              Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-21 16:25:59,717 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 282.14 ms. Allocated memory is still 152.0 MB. Free memory was 125.3 MB in the beginning and 115.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2021-02-21 16:25:59,718 INFO  L168              Benchmark]: Boogie Preprocessor took 61.20 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 114.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-02-21 16:25:59,718 INFO  L168              Benchmark]: RCFGBuilder took 395.76 ms. Allocated memory is still 152.0 MB. Free memory was 114.1 MB in the beginning and 97.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB.
[2021-02-21 16:25:59,719 INFO  L168              Benchmark]: TraceAbstraction took 2245.23 ms. Allocated memory is still 152.0 MB. Free memory was 96.8 MB in the beginning and 49.3 MB in the end (delta: 47.4 MB). Peak memory consumption was 49.0 MB. Max. memory is 8.0 GB.
[2021-02-21 16:25:59,721 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 152.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 282.14 ms. Allocated memory is still 152.0 MB. Free memory was 125.3 MB in the beginning and 115.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 61.20 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 114.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 395.76 ms. Allocated memory is still 152.0 MB. Free memory was 114.1 MB in the beginning and 97.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 2245.23 ms. Allocated memory is still 152.0 MB. Free memory was 96.8 MB in the beginning and 49.3 MB in the end (delta: 47.4 MB). Peak memory consumption was 49.0 MB. 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: 
[L16]              unsigned int N_LIN=__VERIFIER_nondet_uint();
[L17]              unsigned int N_COL=__VERIFIER_nondet_uint();
[L18]              unsigned int j,k;
[L19]              int matriz[N_COL][N_LIN], maior;
[L21]              maior = __VERIFIER_nondet_int()
[L22]              j=0
       VAL         [j=0, maior=0, matriz={4:0}, N_COL=1, N_LIN=1]
[L22]  COND TRUE   j<N_COL
[L23]              k=0
       VAL         [j=0, k=0, maior=0, matriz={4:0}, N_COL=1, N_LIN=1]
[L23]  COND TRUE   k<N_LIN
[L25]              matriz[j][k] = __VERIFIER_nondet_int()
[L27]  EXPR        matriz[j][k]
       VAL         [j=0, k=0, maior=0, matriz={4:0}, matriz[j][k]=1, N_COL=1, N_LIN=1]
[L27]  COND TRUE   matriz[j][k]>maior
[L28]  EXPR        matriz[j][k]
[L28]              maior = matriz[j][k]
[L23]              k++
       VAL         [j=0, k=1, maior=1, matriz={4:0}, N_COL=1, N_LIN=1]
[L23]  COND FALSE  !(k<N_LIN)
       VAL         [j=0, k=1, maior=1, matriz={4:0}, N_COL=1, N_LIN=1]
[L22]              j++
       VAL         [j=1, k=1, maior=1, matriz={4:0}, N_COL=1, N_LIN=1]
[L22]  COND FALSE  !(j<N_COL)
       VAL         [j=1, k=1, maior=1, matriz={4:0}, N_COL=1, N_LIN=1]
[L31]              j=0
       VAL         [j=0, k=1, maior=1, matriz={4:0}, N_COL=1, N_LIN=1]
[L31]  COND TRUE   j<N_COL
[L32]              k=0
       VAL         [j=0, k=0, maior=1, matriz={4:0}, N_COL=1, N_LIN=1]
[L32]  COND TRUE   k<N_LIN
[L33]  EXPR        matriz[j][k]
       VAL         [j=0, k=0, maior=1, matriz={4:0}, matriz[j][k]=1, N_COL=1, N_LIN=1]
[L33]  CALL        __VERIFIER_assert(matriz[j][k]<maior)
       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, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 34 SDslu, 85 SDs, 0 SdLazy, 52 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 907 SizeOfPredicates, 6 NumberOfNonLiveVariables, 232 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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...