/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/recursive-simple/fibo_2calls_6-1.c


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


This is Ultimate 0.2.0-7d8eed3
[2020-11-06 22:16:42,152 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2020-11-06 22:16:42,208 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-11-06 22:16:42,210 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-06 22:16:42,212 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-06 22:16:42,226 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-11-06 22:16:42,228 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
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[2020-11-06 22:16:42,256 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
[2020-11-06 22:16:42,306 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-11-06 22:16:42,307 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-06 22:16:42,311 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-11-06 22:16:42,312 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-11-06 22:16:42,312 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-11-06 22:16:42,312 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-06 22:16:42,312 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-11-06 22:16:42,312 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-11-06 22:16:42,312 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-11-06 22:16:42,313 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-11-06 22:16:42,314 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-11-06 22:16:42,314 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-11-06 22:16:42,314 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-11-06 22:16:42,314 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-11-06 22:16:42,314 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-11-06 22:16:42,315 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-11-06 22:16:42,315 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-11-06 22:16:42,315 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-06 22:16:42,315 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-11-06 22:16:42,315 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-11-06 22:16:42,316 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-11-06 22:16:42,316 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-06 22:16:42,316 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-06 22:16:42,317 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-11-06 22:16:42,317 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-11-06 22:16:42,317 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-11-06 22:16:42,317 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-11-06 22:16:42,317 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-11-06 22:16:42,318 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-11-06 22:16:42,318 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-11-06 22:16:42,724 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-06 22:16:42,773 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-06 22:16:42,776 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-06 22:16:42,777 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-11-06 22:16:42,778 INFO  L275        PluginConnector]: CDTParser initialized
[2020-11-06 22:16:42,779 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c
[2020-11-06 22:16:42,857 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ac03e4d/865126cf56b243f98ae2a6f5b5fdaed9/FLAG457e25bc3
[2020-11-06 22:16:43,396 INFO  L306              CDTParser]: Found 1 translation units.
[2020-11-06 22:16:43,397 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c
[2020-11-06 22:16:43,405 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ac03e4d/865126cf56b243f98ae2a6f5b5fdaed9/FLAG457e25bc3
[2020-11-06 22:16:43,794 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ac03e4d/865126cf56b243f98ae2a6f5b5fdaed9
[2020-11-06 22:16:43,798 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-06 22:16:43,809 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-11-06 22:16:43,812 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-06 22:16:43,812 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-06 22:16:43,816 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-06 22:16:43,817 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:43" (1/1) ...
[2020-11-06 22:16:43,829 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f33cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:43, skipping insertion in model container
[2020-11-06 22:16:43,830 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:43" (1/1) ...
[2020-11-06 22:16:43,839 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-11-06 22:16:43,861 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-11-06 22:16:44,058 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-11-06 22:16:44,069 INFO  L203         MainTranslator]: Completed pre-run
[2020-11-06 22:16:44,088 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-11-06 22:16:44,105 INFO  L208         MainTranslator]: Completed translation
[2020-11-06 22:16:44,105 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:44 WrapperNode
[2020-11-06 22:16:44,105 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-06 22:16:44,107 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-06 22:16:44,107 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-06 22:16:44,107 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-11-06 22:16:44,120 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:44" (1/1) ...
[2020-11-06 22:16:44,121 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:44" (1/1) ...
[2020-11-06 22:16:44,128 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:44" (1/1) ...
[2020-11-06 22:16:44,129 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:44" (1/1) ...
[2020-11-06 22:16:44,135 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:44" (1/1) ...
[2020-11-06 22:16:44,137 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:44" (1/1) ...
[2020-11-06 22:16:44,138 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:44" (1/1) ...
[2020-11-06 22:16:44,140 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-06 22:16:44,141 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-06 22:16:44,141 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-11-06 22:16:44,141 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-11-06 22:16:44,142 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:44" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-06 22:16:44,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-11-06 22:16:44,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-06 22:16:44,222 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-11-06 22:16:44,222 INFO  L138     BoogieDeclarations]: Found implementation of procedure fibo1
[2020-11-06 22:16:44,222 INFO  L138     BoogieDeclarations]: Found implementation of procedure fibo2
[2020-11-06 22:16:44,222 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-11-06 22:16:44,222 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-11-06 22:16:44,223 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-11-06 22:16:44,223 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-11-06 22:16:44,223 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-11-06 22:16:44,223 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-06 22:16:44,223 INFO  L130     BoogieDeclarations]: Found specification of procedure fibo1
[2020-11-06 22:16:44,224 INFO  L130     BoogieDeclarations]: Found specification of procedure fibo2
[2020-11-06 22:16:44,224 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-11-06 22:16:44,224 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-11-06 22:16:44,224 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-06 22:16:44,224 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-06 22:16:44,225 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-11-06 22:16:44,225 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-11-06 22:16:44,225 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-11-06 22:16:44,592 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-06 22:16:44,593 INFO  L298             CfgBuilder]: Removed 0 assume(true) statements.
[2020-11-06 22:16:44,595 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:44 BoogieIcfgContainer
[2020-11-06 22:16:44,595 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-06 22:16:44,597 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-11-06 22:16:44,597 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-11-06 22:16:44,600 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-11-06 22:16:44,601 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:16:43" (1/3) ...
[2020-11-06 22:16:44,601 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a67ea11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:16:44, skipping insertion in model container
[2020-11-06 22:16:44,602 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:44" (2/3) ...
[2020-11-06 22:16:44,602 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a67ea11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:16:44, skipping insertion in model container
[2020-11-06 22:16:44,602 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:44" (3/3) ...
[2020-11-06 22:16:44,604 INFO  L111   eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c
[2020-11-06 22:16:44,641 INFO  L179   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-11-06 22:16:44,647 INFO  L191   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-11-06 22:16:44,675 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-11-06 22:16:44,719 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-11-06 22:16:44,720 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-11-06 22:16:44,720 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-11-06 22:16:44,720 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-11-06 22:16:44,720 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-06 22:16:44,720 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-11-06 22:16:44,738 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-06 22:16:44,738 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-11-06 22:16:44,758 INFO  L276                IsEmpty]: Start isEmpty. Operand 38 states.
[2020-11-06 22:16:44,764 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-11-06 22:16:44,764 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:16:44,765 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:16:44,766 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:16:44,772 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:16:44,772 INFO  L82        PathProgramCache]: Analyzing trace with hash 219823047, now seen corresponding path program 1 times
[2020-11-06 22:16:44,784 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:16:44,784 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174547715]
[2020-11-06 22:16:44,785 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:16:44,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:45,055 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:16:45,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:45,075 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:16:45,079 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:45,130 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 22:16:45,131 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174547715]
[2020-11-06 22:16:45,132 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-06 22:16:45,133 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-11-06 22:16:45,133 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141300166]
[2020-11-06 22:16:45,138 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-11-06 22:16:45,139 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:16:45,153 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-11-06 22:16:45,154 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-11-06 22:16:45,156 INFO  L87              Difference]: Start difference. First operand 38 states. Second operand 6 states.
[2020-11-06 22:16:45,690 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:16:45,690 INFO  L93              Difference]: Finished difference Result 50 states and 60 transitions.
[2020-11-06 22:16:45,691 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-11-06 22:16:45,693 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 15
[2020-11-06 22:16:45,693 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:16:45,703 INFO  L225             Difference]: With dead ends: 50
[2020-11-06 22:16:45,704 INFO  L226             Difference]: Without dead ends: 32
[2020-11-06 22:16:45,707 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2020-11-06 22:16:45,726 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2020-11-06 22:16:45,756 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2020-11-06 22:16:45,758 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-11-06 22:16:45,760 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions.
[2020-11-06 22:16:45,761 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 15
[2020-11-06 22:16:45,762 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:16:45,762 INFO  L481      AbstractCegarLoop]: Abstraction has 32 states and 39 transitions.
[2020-11-06 22:16:45,762 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-11-06 22:16:45,762 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions.
[2020-11-06 22:16:45,764 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-11-06 22:16:45,764 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:16:45,764 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:16:45,765 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-11-06 22:16:45,765 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:16:45,766 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:16:45,766 INFO  L82        PathProgramCache]: Analyzing trace with hash -1220716726, now seen corresponding path program 1 times
[2020-11-06 22:16:45,766 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:16:45,767 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339625056]
[2020-11-06 22:16:45,767 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:16:45,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:45,845 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:16:45,849 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:45,858 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:16:45,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:45,885 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 22:16:45,885 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339625056]
[2020-11-06 22:16:45,886 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-06 22:16:45,886 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-11-06 22:16:45,886 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035392808]
[2020-11-06 22:16:45,888 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-11-06 22:16:45,888 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:16:45,889 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-11-06 22:16:45,889 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-11-06 22:16:45,890 INFO  L87              Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 6 states.
[2020-11-06 22:16:46,143 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:16:46,144 INFO  L93              Difference]: Finished difference Result 39 states and 47 transitions.
[2020-11-06 22:16:46,144 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-11-06 22:16:46,144 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 16
[2020-11-06 22:16:46,145 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:16:46,146 INFO  L225             Difference]: With dead ends: 39
[2020-11-06 22:16:46,147 INFO  L226             Difference]: Without dead ends: 34
[2020-11-06 22:16:46,148 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2020-11-06 22:16:46,148 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2020-11-06 22:16:46,158 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32.
[2020-11-06 22:16:46,159 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-11-06 22:16:46,160 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions.
[2020-11-06 22:16:46,161 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 16
[2020-11-06 22:16:46,161 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:16:46,161 INFO  L481      AbstractCegarLoop]: Abstraction has 32 states and 39 transitions.
[2020-11-06 22:16:46,161 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-11-06 22:16:46,161 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions.
[2020-11-06 22:16:46,163 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-11-06 22:16:46,163 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:16:46,163 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:16:46,164 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-11-06 22:16:46,164 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:16:46,165 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:16:46,165 INFO  L82        PathProgramCache]: Analyzing trace with hash 2083135015, now seen corresponding path program 1 times
[2020-11-06 22:16:46,165 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:16:46,165 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887597127]
[2020-11-06 22:16:46,166 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:16:46,186 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:46,406 WARN  L194               SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 31
[2020-11-06 22:16:46,408 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:16:46,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:46,421 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:16:46,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:46,476 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:46,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:46,521 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-11-06 22:16:46,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:46,535 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-11-06 22:16:46,536 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887597127]
[2020-11-06 22:16:46,536 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155474184]
[2020-11-06 22:16:46,537 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
[2020-11-06 22:16:46,600 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:46,603 INFO  L263         TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core
[2020-11-06 22:16:46,610 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:16:46,751 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-11-06 22:16:46,752 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:16:46,752 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2020-11-06 22:16:46,753 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436029460]
[2020-11-06 22:16:46,753 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-11-06 22:16:46,753 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:16:46,754 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-11-06 22:16:46,754 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110
[2020-11-06 22:16:46,755 INFO  L87              Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 11 states.
[2020-11-06 22:16:47,373 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:16:47,374 INFO  L93              Difference]: Finished difference Result 61 states and 81 transitions.
[2020-11-06 22:16:47,374 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-11-06 22:16:47,375 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 28
[2020-11-06 22:16:47,375 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:16:47,376 INFO  L225             Difference]: With dead ends: 61
[2020-11-06 22:16:47,377 INFO  L226             Difference]: Without dead ends: 36
[2020-11-06 22:16:47,378 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342
[2020-11-06 22:16:47,378 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2020-11-06 22:16:47,388 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34.
[2020-11-06 22:16:47,388 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2020-11-06 22:16:47,390 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions.
[2020-11-06 22:16:47,390 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 28
[2020-11-06 22:16:47,391 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:16:47,391 INFO  L481      AbstractCegarLoop]: Abstraction has 34 states and 41 transitions.
[2020-11-06 22:16:47,391 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-11-06 22:16:47,391 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions.
[2020-11-06 22:16:47,392 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-11-06 22:16:47,392 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:16:47,393 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:16:47,605 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2020-11-06 22:16:47,606 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:16:47,607 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:16:47,608 INFO  L82        PathProgramCache]: Analyzing trace with hash 752879968, now seen corresponding path program 1 times
[2020-11-06 22:16:47,608 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:16:47,609 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047915152]
[2020-11-06 22:16:47,609 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:16:47,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:47,670 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:16:47,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:47,679 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:16:47,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:47,710 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:47,712 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:47,739 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:47,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:47,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-11-06 22:16:47,747 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047915152]
[2020-11-06 22:16:47,747 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275555865]
[2020-11-06 22:16:47,747 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
[2020-11-06 22:16:47,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:47,803 INFO  L263         TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core
[2020-11-06 22:16:47,805 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:16:47,863 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-11-06 22:16:47,863 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:16:47,863 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10
[2020-11-06 22:16:47,864 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042304202]
[2020-11-06 22:16:47,864 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-11-06 22:16:47,864 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:16:47,865 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-11-06 22:16:47,865 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2020-11-06 22:16:47,865 INFO  L87              Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 10 states.
[2020-11-06 22:16:48,436 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:16:48,436 INFO  L93              Difference]: Finished difference Result 57 states and 77 transitions.
[2020-11-06 22:16:48,437 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-11-06 22:16:48,437 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 29
[2020-11-06 22:16:48,437 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:16:48,440 INFO  L225             Difference]: With dead ends: 57
[2020-11-06 22:16:48,440 INFO  L226             Difference]: Without dead ends: 52
[2020-11-06 22:16:48,441 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272
[2020-11-06 22:16:48,442 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2020-11-06 22:16:48,454 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50.
[2020-11-06 22:16:48,454 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-11-06 22:16:48,456 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 67 transitions.
[2020-11-06 22:16:48,456 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 67 transitions. Word has length 29
[2020-11-06 22:16:48,456 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:16:48,456 INFO  L481      AbstractCegarLoop]: Abstraction has 50 states and 67 transitions.
[2020-11-06 22:16:48,456 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-11-06 22:16:48,457 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 67 transitions.
[2020-11-06 22:16:48,459 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-11-06 22:16:48,459 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:16:48,459 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:16:48,672 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:16:48,673 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:16:48,674 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:16:48,675 INFO  L82        PathProgramCache]: Analyzing trace with hash 2070859795, now seen corresponding path program 1 times
[2020-11-06 22:16:48,675 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:16:48,676 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310148445]
[2020-11-06 22:16:48,676 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:16:48,692 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:48,729 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:16:48,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:48,738 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:16:48,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:48,755 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:48,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:48,781 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:48,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:48,805 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-11-06 22:16:48,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:48,810 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-11-06 22:16:48,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:48,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-11-06 22:16:48,816 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310148445]
[2020-11-06 22:16:48,816 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181766230]
[2020-11-06 22:16:48,817 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
[2020-11-06 22:16:48,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:48,885 INFO  L263         TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-11-06 22:16:48,888 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:16:48,992 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-11-06 22:16:48,992 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:16:48,992 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12
[2020-11-06 22:16:48,993 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774985228]
[2020-11-06 22:16:48,993 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-11-06 22:16:48,994 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:16:48,994 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-11-06 22:16:48,995 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2020-11-06 22:16:48,995 INFO  L87              Difference]: Start difference. First operand 50 states and 67 transitions. Second operand 12 states.
[2020-11-06 22:16:49,932 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:16:49,932 INFO  L93              Difference]: Finished difference Result 111 states and 173 transitions.
[2020-11-06 22:16:49,932 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-11-06 22:16:49,933 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 41
[2020-11-06 22:16:49,933 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:16:49,936 INFO  L225             Difference]: With dead ends: 111
[2020-11-06 22:16:49,936 INFO  L226             Difference]: Without dead ends: 68
[2020-11-06 22:16:49,938 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506
[2020-11-06 22:16:49,938 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2020-11-06 22:16:49,963 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68.
[2020-11-06 22:16:49,963 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-11-06 22:16:49,967 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 97 transitions.
[2020-11-06 22:16:49,968 INFO  L78                 Accepts]: Start accepts. Automaton has 68 states and 97 transitions. Word has length 41
[2020-11-06 22:16:49,968 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:16:49,968 INFO  L481      AbstractCegarLoop]: Abstraction has 68 states and 97 transitions.
[2020-11-06 22:16:49,968 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-11-06 22:16:49,969 INFO  L276                IsEmpty]: Start isEmpty. Operand 68 states and 97 transitions.
[2020-11-06 22:16:49,971 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2020-11-06 22:16:49,971 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:16:49,971 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:16:50,183 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:16:50,184 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:16:50,185 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:16:50,186 INFO  L82        PathProgramCache]: Analyzing trace with hash 1960607334, now seen corresponding path program 1 times
[2020-11-06 22:16:50,187 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:16:50,187 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823588662]
[2020-11-06 22:16:50,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:16:50,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:50,284 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:16:50,287 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:50,291 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:16:50,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:50,315 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:50,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:50,367 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:50,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:50,372 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:50,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:50,377 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:16:50,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:50,399 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2020-11-06 22:16:50,400 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823588662]
[2020-11-06 22:16:50,400 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130383008]
[2020-11-06 22:16:50,400 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:16:50,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:50,460 INFO  L263         TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-11-06 22:16:50,463 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:16:50,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-11-06 22:16:50,562 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:16:50,562 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2020-11-06 22:16:50,562 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921164561]
[2020-11-06 22:16:50,563 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-11-06 22:16:50,563 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:16:50,564 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-11-06 22:16:50,564 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182
[2020-11-06 22:16:50,564 INFO  L87              Difference]: Start difference. First operand 68 states and 97 transitions. Second operand 14 states.
[2020-11-06 22:16:51,682 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:16:51,682 INFO  L93              Difference]: Finished difference Result 183 states and 327 transitions.
[2020-11-06 22:16:51,683 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-11-06 22:16:51,683 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 42
[2020-11-06 22:16:51,684 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:16:51,690 INFO  L225             Difference]: With dead ends: 183
[2020-11-06 22:16:51,693 INFO  L226             Difference]: Without dead ends: 122
[2020-11-06 22:16:51,699 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756
[2020-11-06 22:16:51,700 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2020-11-06 22:16:51,747 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108.
[2020-11-06 22:16:51,748 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 108 states.
[2020-11-06 22:16:51,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 171 transitions.
[2020-11-06 22:16:51,752 INFO  L78                 Accepts]: Start accepts. Automaton has 108 states and 171 transitions. Word has length 42
[2020-11-06 22:16:51,753 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:16:51,755 INFO  L481      AbstractCegarLoop]: Abstraction has 108 states and 171 transitions.
[2020-11-06 22:16:51,755 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-11-06 22:16:51,756 INFO  L276                IsEmpty]: Start isEmpty. Operand 108 states and 171 transitions.
[2020-11-06 22:16:51,765 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2020-11-06 22:16:51,766 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:16:51,766 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:16:51,967 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:16:51,968 INFO  L429      AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:16:51,969 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:16:51,969 INFO  L82        PathProgramCache]: Analyzing trace with hash -751460799, now seen corresponding path program 1 times
[2020-11-06 22:16:51,969 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:16:51,970 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181654053]
[2020-11-06 22:16:51,970 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:16:51,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:52,037 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:16:52,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:52,045 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:16:52,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:52,085 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:52,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:52,111 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:52,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:52,180 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:52,182 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:52,184 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:52,186 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:52,189 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:16:52,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:52,221 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-11-06 22:16:52,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:52,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2020-11-06 22:16:52,236 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181654053]
[2020-11-06 22:16:52,236 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555537519]
[2020-11-06 22:16:52,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:16:52,300 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:52,302 INFO  L263         TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-11-06 22:16:52,315 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:16:52,429 INFO  L134       CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2020-11-06 22:16:52,430 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:16:52,430 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15
[2020-11-06 22:16:52,430 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060304544]
[2020-11-06 22:16:52,431 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-11-06 22:16:52,431 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:16:52,432 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-11-06 22:16:52,432 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210
[2020-11-06 22:16:52,432 INFO  L87              Difference]: Start difference. First operand 108 states and 171 transitions. Second operand 15 states.
[2020-11-06 22:16:53,742 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:16:53,743 INFO  L93              Difference]: Finished difference Result 261 states and 501 transitions.
[2020-11-06 22:16:53,743 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-11-06 22:16:53,743 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 56
[2020-11-06 22:16:53,744 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:16:53,747 INFO  L225             Difference]: With dead ends: 261
[2020-11-06 22:16:53,747 INFO  L226             Difference]: Without dead ends: 160
[2020-11-06 22:16:53,753 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992
[2020-11-06 22:16:53,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 160 states.
[2020-11-06 22:16:53,789 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 114.
[2020-11-06 22:16:53,789 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 114 states.
[2020-11-06 22:16:53,792 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 182 transitions.
[2020-11-06 22:16:53,792 INFO  L78                 Accepts]: Start accepts. Automaton has 114 states and 182 transitions. Word has length 56
[2020-11-06 22:16:53,793 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:16:53,793 INFO  L481      AbstractCegarLoop]: Abstraction has 114 states and 182 transitions.
[2020-11-06 22:16:53,793 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-11-06 22:16:53,793 INFO  L276                IsEmpty]: Start isEmpty. Operand 114 states and 182 transitions.
[2020-11-06 22:16:53,797 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2020-11-06 22:16:53,797 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:16:53,797 INFO  L422         BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:16:54,012 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2020-11-06 22:16:54,013 INFO  L429      AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:16:54,014 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:16:54,015 INFO  L82        PathProgramCache]: Analyzing trace with hash 2107233529, now seen corresponding path program 1 times
[2020-11-06 22:16:54,015 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:16:54,017 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458648838]
[2020-11-06 22:16:54,017 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:16:54,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,104 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:16:54,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,111 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:16:54,131 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,146 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:54,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,172 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:54,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,202 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:54,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,246 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:54,248 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,249 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:54,252 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,256 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:16:54,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,262 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-11-06 22:16:54,264 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,284 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-11-06 22:16:54,289 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,295 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:54,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,306 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:54,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,312 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:54,313 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,315 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:54,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,327 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:16:54,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,334 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-11-06 22:16:54,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked.
[2020-11-06 22:16:54,359 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458648838]
[2020-11-06 22:16:54,359 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975724564]
[2020-11-06 22:16:54,360 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:16:54,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:54,430 INFO  L263         TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-11-06 22:16:54,444 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:16:54,609 INFO  L134       CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2020-11-06 22:16:54,609 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:16:54,609 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17
[2020-11-06 22:16:54,610 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691833414]
[2020-11-06 22:16:54,611 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-11-06 22:16:54,611 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:16:54,611 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-11-06 22:16:54,612 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272
[2020-11-06 22:16:54,612 INFO  L87              Difference]: Start difference. First operand 114 states and 182 transitions. Second operand 17 states.
[2020-11-06 22:16:56,155 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:16:56,156 INFO  L93              Difference]: Finished difference Result 246 states and 468 transitions.
[2020-11-06 22:16:56,156 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-11-06 22:16:56,157 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 112
[2020-11-06 22:16:56,157 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:16:56,159 INFO  L225             Difference]: With dead ends: 246
[2020-11-06 22:16:56,161 INFO  L226             Difference]: Without dead ends: 112
[2020-11-06 22:16:56,164 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=263, Invalid=1377, Unknown=0, NotChecked=0, Total=1640
[2020-11-06 22:16:56,164 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2020-11-06 22:16:56,199 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 89.
[2020-11-06 22:16:56,200 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 89 states.
[2020-11-06 22:16:56,204 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions.
[2020-11-06 22:16:56,206 INFO  L78                 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 112
[2020-11-06 22:16:56,208 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:16:56,208 INFO  L481      AbstractCegarLoop]: Abstraction has 89 states and 121 transitions.
[2020-11-06 22:16:56,208 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-11-06 22:16:56,208 INFO  L276                IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions.
[2020-11-06 22:16:56,214 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 195
[2020-11-06 22:16:56,215 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:16:56,215 INFO  L422         BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:16:56,416 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:16:56,417 INFO  L429      AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:16:56,418 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:16:56,418 INFO  L82        PathProgramCache]: Analyzing trace with hash 993046157, now seen corresponding path program 1 times
[2020-11-06 22:16:56,419 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:16:56,419 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617213979]
[2020-11-06 22:16:56,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:16:56,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,549 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:16:56,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,554 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:16:56,594 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,620 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,632 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,648 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,655 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,668 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,703 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,748 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,753 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:56,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,756 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:16:56,757 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,760 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-11-06 22:16:56,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,780 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-11-06 22:16:56,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,788 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,789 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,792 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,794 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:56,795 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,796 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:16:56,797 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,805 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-11-06 22:16:56,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,823 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,825 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,831 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,832 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,840 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,846 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,847 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,850 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:56,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,853 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:16:56,854 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,856 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-11-06 22:16:56,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,868 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-11-06 22:16:56,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,879 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,889 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:56,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,895 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:56,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,901 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:16:56,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:56,997 INFO  L134       CoverageAnalysis]: Checked inductivity of 941 backedges. 76 proven. 208 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked.
[2020-11-06 22:16:56,998 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617213979]
[2020-11-06 22:16:56,998 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735337217]
[2020-11-06 22:16:56,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:16:57,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:57,102 INFO  L263         TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-11-06 22:16:57,108 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:16:57,250 INFO  L134       CoverageAnalysis]: Checked inductivity of 941 backedges. 63 proven. 180 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked.
[2020-11-06 22:16:57,251 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:16:57,251 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16
[2020-11-06 22:16:57,254 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242575500]
[2020-11-06 22:16:57,255 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-11-06 22:16:57,255 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:16:57,255 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-11-06 22:16:57,256 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240
[2020-11-06 22:16:57,256 INFO  L87              Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 16 states.
[2020-11-06 22:16:58,423 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:16:58,423 INFO  L93              Difference]: Finished difference Result 175 states and 254 transitions.
[2020-11-06 22:16:58,424 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2020-11-06 22:16:58,424 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 194
[2020-11-06 22:16:58,425 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:16:58,427 INFO  L225             Difference]: With dead ends: 175
[2020-11-06 22:16:58,427 INFO  L226             Difference]: Without dead ends: 98
[2020-11-06 22:16:58,428 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190
[2020-11-06 22:16:58,429 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2020-11-06 22:16:58,440 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92.
[2020-11-06 22:16:58,440 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-11-06 22:16:58,443 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 123 transitions.
[2020-11-06 22:16:58,443 INFO  L78                 Accepts]: Start accepts. Automaton has 92 states and 123 transitions. Word has length 194
[2020-11-06 22:16:58,444 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:16:58,444 INFO  L481      AbstractCegarLoop]: Abstraction has 92 states and 123 transitions.
[2020-11-06 22:16:58,444 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-11-06 22:16:58,444 INFO  L276                IsEmpty]: Start isEmpty. Operand 92 states and 123 transitions.
[2020-11-06 22:16:58,446 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 168
[2020-11-06 22:16:58,447 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:16:58,447 INFO  L422         BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:16:58,661 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:16:58,662 INFO  L429      AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:16:58,663 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:16:58,663 INFO  L82        PathProgramCache]: Analyzing trace with hash -237806758, now seen corresponding path program 2 times
[2020-11-06 22:16:58,664 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:16:58,664 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871920888]
[2020-11-06 22:16:58,664 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:16:58,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,741 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:16:58,743 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,746 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:16:58,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,799 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:58,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,839 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:58,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,874 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:58,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,896 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:58,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,956 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:58,958 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,959 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:58,961 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,964 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:16:58,965 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,967 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-11-06 22:16:58,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,973 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:58,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,977 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:58,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:58,982 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-11-06 22:16:58,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,001 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:59,003 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,005 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:59,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,007 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:59,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,010 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:16:59,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,024 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2020-11-06 22:16:59,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,047 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:59,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,075 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:59,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,097 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:59,098 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,100 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2020-11-06 22:16:59,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,111 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:16:59,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,115 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:16:59,116 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,173 INFO  L134       CoverageAnalysis]: Checked inductivity of 674 backedges. 181 proven. 164 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked.
[2020-11-06 22:16:59,174 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871920888]
[2020-11-06 22:16:59,174 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928944650]
[2020-11-06 22:16:59,174 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:16:59,257 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-11-06 22:16:59,257 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-06 22:16:59,260 INFO  L263         TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-11-06 22:16:59,264 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:16:59,418 INFO  L134       CoverageAnalysis]: Checked inductivity of 674 backedges. 84 proven. 157 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked.
[2020-11-06 22:16:59,418 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:16:59,418 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 21
[2020-11-06 22:16:59,419 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581218588]
[2020-11-06 22:16:59,419 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-11-06 22:16:59,419 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:16:59,420 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-11-06 22:16:59,420 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420
[2020-11-06 22:16:59,421 INFO  L87              Difference]: Start difference. First operand 92 states and 123 transitions. Second operand 21 states.
[2020-11-06 22:17:01,399 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:17:01,400 INFO  L93              Difference]: Finished difference Result 212 states and 348 transitions.
[2020-11-06 22:17:01,400 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2020-11-06 22:17:01,400 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states. Word has length 167
[2020-11-06 22:17:01,401 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:17:01,402 INFO  L225             Difference]: With dead ends: 212
[2020-11-06 22:17:01,403 INFO  L226             Difference]: Without dead ends: 102
[2020-11-06 22:17:01,405 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=307, Invalid=1855, Unknown=0, NotChecked=0, Total=2162
[2020-11-06 22:17:01,406 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2020-11-06 22:17:01,416 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102.
[2020-11-06 22:17:01,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 102 states.
[2020-11-06 22:17:01,418 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions.
[2020-11-06 22:17:01,418 INFO  L78                 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 167
[2020-11-06 22:17:01,418 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:17:01,419 INFO  L481      AbstractCegarLoop]: Abstraction has 102 states and 119 transitions.
[2020-11-06 22:17:01,419 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-11-06 22:17:01,419 INFO  L276                IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions.
[2020-11-06 22:17:01,421 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 180
[2020-11-06 22:17:01,421 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:17:01,421 INFO  L422         BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:17:01,635 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2020-11-06 22:17:01,636 INFO  L429      AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:17:01,637 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:17:01,637 INFO  L82        PathProgramCache]: Analyzing trace with hash -695303513, now seen corresponding path program 3 times
[2020-11-06 22:17:01,637 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:17:01,637 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582652788]
[2020-11-06 22:17:01,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:17:01,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:01,758 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:17:01,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:01,770 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:17:01,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:01,890 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:01,903 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:01,968 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:01,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,060 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:02,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,133 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:02,136 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,213 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:02,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,244 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:17:02,246 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,278 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:17:02,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,286 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-11-06 22:17:02,288 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,326 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:02,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,335 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:17:02,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,406 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-11-06 22:17:02,414 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,487 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:02,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,495 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:02,496 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,498 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:17:02,502 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,505 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:17:02,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,541 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2020-11-06 22:17:02,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,652 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:02,656 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,668 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:02,671 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,676 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:02,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,681 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:17:02,683 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,686 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:17:02,689 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,693 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-11-06 22:17:02,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,702 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:02,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,706 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:17:02,709 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked.
[2020-11-06 22:17:02,871 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582652788]
[2020-11-06 22:17:02,871 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923102516]
[2020-11-06 22:17:02,871 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:17:02,992 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s)
[2020-11-06 22:17:02,992 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-06 22:17:02,996 INFO  L263         TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 103 conjunts are in the unsatisfiable core
[2020-11-06 22:17:03,000 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:17:03,794 INFO  L134       CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked.
[2020-11-06 22:17:03,795 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:17:03,795 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 37
[2020-11-06 22:17:03,795 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116898337]
[2020-11-06 22:17:03,796 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 37 states
[2020-11-06 22:17:03,796 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:17:03,797 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2020-11-06 22:17:03,798 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1245, Unknown=0, NotChecked=0, Total=1332
[2020-11-06 22:17:03,798 INFO  L87              Difference]: Start difference. First operand 102 states and 119 transitions. Second operand 37 states.
[2020-11-06 22:17:06,102 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:17:06,102 INFO  L93              Difference]: Finished difference Result 122 states and 141 transitions.
[2020-11-06 22:17:06,103 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2020-11-06 22:17:06,103 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states. Word has length 179
[2020-11-06 22:17:06,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:17:06,106 INFO  L225             Difference]: With dead ends: 122
[2020-11-06 22:17:06,106 INFO  L226             Difference]: Without dead ends: 94
[2020-11-06 22:17:06,108 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 235 SyntacticMatches, 13 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=215, Invalid=3691, Unknown=0, NotChecked=0, Total=3906
[2020-11-06 22:17:06,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2020-11-06 22:17:06,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94.
[2020-11-06 22:17:06,117 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 94 states.
[2020-11-06 22:17:06,118 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions.
[2020-11-06 22:17:06,118 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 179
[2020-11-06 22:17:06,119 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:17:06,119 INFO  L481      AbstractCegarLoop]: Abstraction has 94 states and 108 transitions.
[2020-11-06 22:17:06,119 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 37 states.
[2020-11-06 22:17:06,119 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions.
[2020-11-06 22:17:06,122 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 207
[2020-11-06 22:17:06,122 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:17:06,122 INFO  L422         BasicCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:17:06,335 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:17:06,336 INFO  L429      AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:17:06,337 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:17:06,337 INFO  L82        PathProgramCache]: Analyzing trace with hash -1578906910, now seen corresponding path program 4 times
[2020-11-06 22:17:06,337 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:17:06,338 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354515952]
[2020-11-06 22:17:06,338 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:17:06,367 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,426 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:17:06,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,430 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 22:17:06,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,497 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,546 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,582 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,617 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,626 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,629 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,631 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:17:06,632 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,633 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:17:06,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,636 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-11-06 22:17:06,639 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,688 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,690 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,691 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:17:06,692 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,697 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2020-11-06 22:17:06,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,716 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,718 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,732 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:17:06,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,742 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2020-11-06 22:17:06,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,748 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,750 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,752 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:17:06,753 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,754 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:17:06,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,768 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2020-11-06 22:17:06,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,778 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,796 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,798 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,801 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:17:06,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,803 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-11-06 22:17:06,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,805 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-11-06 22:17:06,806 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,808 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-11-06 22:17:06,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,809 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-11-06 22:17:06,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 1073 backedges. 153 proven. 211 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked.
[2020-11-06 22:17:06,872 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354515952]
[2020-11-06 22:17:06,872 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663230831]
[2020-11-06 22:17:06,872 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:17:06,950 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-11-06 22:17:06,950 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-06 22:17:06,952 INFO  L263         TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-11-06 22:17:06,956 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:17:07,157 INFO  L134       CoverageAnalysis]: Checked inductivity of 1073 backedges. 101 proven. 320 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked.
[2020-11-06 22:17:07,157 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:17:07,157 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20
[2020-11-06 22:17:07,158 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570188612]
[2020-11-06 22:17:07,159 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-11-06 22:17:07,159 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:17:07,159 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-11-06 22:17:07,160 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380
[2020-11-06 22:17:07,160 INFO  L87              Difference]: Start difference. First operand 94 states and 108 transitions. Second operand 20 states.
[2020-11-06 22:17:08,123 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:17:08,123 INFO  L93              Difference]: Finished difference Result 150 states and 178 transitions.
[2020-11-06 22:17:08,124 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-11-06 22:17:08,124 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states. Word has length 206
[2020-11-06 22:17:08,124 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:17:08,125 INFO  L225             Difference]: With dead ends: 150
[2020-11-06 22:17:08,125 INFO  L226             Difference]: Without dead ends: 0
[2020-11-06 22:17:08,126 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=196, Invalid=1136, Unknown=0, NotChecked=0, Total=1332
[2020-11-06 22:17:08,126 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-11-06 22:17:08,127 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-11-06 22:17:08,127 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-11-06 22:17:08,127 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-11-06 22:17:08,127 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 206
[2020-11-06 22:17:08,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:17:08,127 INFO  L481      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-11-06 22:17:08,127 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-11-06 22:17:08,127 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-11-06 22:17:08,128 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-11-06 22:17:08,336 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:17:08,341 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-11-06 22:17:09,853 WARN  L194               SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 26
[2020-11-06 22:17:10,451 WARN  L194               SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 35
[2020-11-06 22:17:10,651 WARN  L194               SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 6
[2020-11-06 22:17:10,851 INFO  L266        CegarLoopResult]: For program point  reach_errorEXIT(line 4)  no Hoare annotation was computed.
[2020-11-06 22:17:10,851 INFO  L269        CegarLoopResult]: At program point  reach_errorENTRY(line 4)  the Hoare annotation is:  true
[2020-11-06 22:17:10,852 INFO  L266        CegarLoopResult]: For program point  reach_errorFINAL(line 4)  no Hoare annotation was computed.
[2020-11-06 22:17:10,852 INFO  L266        CegarLoopResult]: For program point  reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4)  no Hoare annotation was computed.
[2020-11-06 22:17:10,852 INFO  L266        CegarLoopResult]: For program point  ULTIMATE.initFINAL(line -1)  no Hoare annotation was computed.
[2020-11-06 22:17:10,852 INFO  L262        CegarLoopResult]: At program point  ULTIMATE.initENTRY(line -1)  the Hoare annotation is:  (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|))
[2020-11-06 22:17:10,852 INFO  L266        CegarLoopResult]: For program point  ULTIMATE.initEXIT(line -1)  no Hoare annotation was computed.
[2020-11-06 22:17:10,852 INFO  L266        CegarLoopResult]: For program point  ULTIMATE.startEXIT(line -1)  no Hoare annotation was computed.
[2020-11-06 22:17:10,852 INFO  L269        CegarLoopResult]: At program point  L-1(line -1)  the Hoare annotation is:  true
[2020-11-06 22:17:10,853 INFO  L269        CegarLoopResult]: At program point  ULTIMATE.startENTRY(line -1)  the Hoare annotation is:  true
[2020-11-06 22:17:10,853 INFO  L266        CegarLoopResult]: For program point  ULTIMATE.startFINAL(line -1)  no Hoare annotation was computed.
[2020-11-06 22:17:10,853 INFO  L269        CegarLoopResult]: At program point  mainENTRY(lines 37 44)  the Hoare annotation is:  true
[2020-11-06 22:17:10,853 INFO  L266        CegarLoopResult]: For program point  mainEXIT(lines 37 44)  no Hoare annotation was computed.
[2020-11-06 22:17:10,853 INFO  L266        CegarLoopResult]: For program point  mainFINAL(lines 37 44)  no Hoare annotation was computed.
[2020-11-06 22:17:10,853 INFO  L262        CegarLoopResult]: At program point  L41(line 41)  the Hoare annotation is:  false
[2020-11-06 22:17:10,853 INFO  L266        CegarLoopResult]: For program point  L40(lines 40 42)  no Hoare annotation was computed.
[2020-11-06 22:17:10,853 INFO  L266        CegarLoopResult]: For program point  L41-1(line 41)  no Hoare annotation was computed.
[2020-11-06 22:17:10,854 INFO  L262        CegarLoopResult]: At program point  L39(line 39)  the Hoare annotation is:  (and (<= 6 main_~x~0) (<= main_~x~0 6))
[2020-11-06 22:17:10,854 INFO  L266        CegarLoopResult]: For program point  L39-1(line 39)  no Hoare annotation was computed.
[2020-11-06 22:17:10,854 INFO  L266        CegarLoopResult]: For program point  L40-2(lines 40 42)  no Hoare annotation was computed.
[2020-11-06 22:17:10,857 INFO  L269        CegarLoopResult]: At program point  fibo2ENTRY(lines 19 27)  the Hoare annotation is:  true
[2020-11-06 22:17:10,858 INFO  L262        CegarLoopResult]: At program point  L25(line 25)  the Hoare annotation is:  (and (= fibo2_~n |fibo2_#in~n|) (< 1 fibo2_~n))
[2020-11-06 22:17:10,858 INFO  L266        CegarLoopResult]: For program point  L25-1(line 25)  no Hoare annotation was computed.
[2020-11-06 22:17:10,858 INFO  L262        CegarLoopResult]: At program point  L25-2(line 25)  the Hoare annotation is:  (let ((.cse0 (<= |fibo2_#in~n| 4))) (and (or .cse0 (and (<= |fibo2_#t~ret9| 3) (<= 3 |fibo2_#t~ret9|)) (<= 6 |fibo2_#in~n|)) (let ((.cse1 (= fibo2_~n |fibo2_#in~n|))) (or (and .cse1 (<= 5 |fibo2_#in~n|)) (and (<= |fibo2_#t~ret9| 1) .cse1 (< 1 fibo2_~n) (<= 1 |fibo2_#t~ret9|)))) (or (not .cse0) (<= fibo2_~n 3))))
[2020-11-06 22:17:10,858 INFO  L266        CegarLoopResult]: For program point  L22(lines 22 26)  no Hoare annotation was computed.
[2020-11-06 22:17:10,858 INFO  L266        CegarLoopResult]: For program point  L25-3(line 25)  no Hoare annotation was computed.
[2020-11-06 22:17:10,858 INFO  L266        CegarLoopResult]: For program point  L20(lines 20 26)  no Hoare annotation was computed.
[2020-11-06 22:17:10,858 INFO  L266        CegarLoopResult]: For program point  fibo2FINAL(lines 19 27)  no Hoare annotation was computed.
[2020-11-06 22:17:10,859 INFO  L266        CegarLoopResult]: For program point  fibo2EXIT(lines 19 27)  no Hoare annotation was computed.
[2020-11-06 22:17:10,859 INFO  L269        CegarLoopResult]: At program point  fibo1ENTRY(lines 9 17)  the Hoare annotation is:  true
[2020-11-06 22:17:10,859 INFO  L262        CegarLoopResult]: At program point  L15(line 15)  the Hoare annotation is:  (and (not (<= |fibo1_#in~n| 1)) (= fibo1_~n |fibo1_#in~n|))
[2020-11-06 22:17:10,859 INFO  L266        CegarLoopResult]: For program point  L15-1(line 15)  no Hoare annotation was computed.
[2020-11-06 22:17:10,860 INFO  L262        CegarLoopResult]: At program point  L15-2(line 15)  the Hoare annotation is:  (let ((.cse1 (<= |fibo1_#in~n| 2)) (.cse5 (<= 1 |fibo1_#t~ret7|)) (.cse6 (<= |fibo1_#t~ret7| 1)) (.cse4 (<= 3 |fibo1_#in~n|))) (let ((.cse0 (and (<= |fibo1_#in~n| 3) .cse5 .cse6 .cse4)) (.cse3 (and .cse5 .cse1 .cse6 (<= 2 |fibo1_#in~n|)))) (and (or .cse0 .cse1 (<= 4 |fibo1_#in~n|)) (let ((.cse2 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= |fibo1_#in~n| 5) .cse2) (and (<= 5 |fibo1_#t~ret7|) .cse2 (<= |fibo1_#t~ret7| 5)) (and (<= 7 |fibo1_#in~n|) .cse2))) (or .cse0 (<= 5 |fibo1_#in~n|) .cse3 (and (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|))) (or .cse3 .cse4))))
[2020-11-06 22:17:10,860 INFO  L266        CegarLoopResult]: For program point  L12(lines 12 16)  no Hoare annotation was computed.
[2020-11-06 22:17:10,860 INFO  L266        CegarLoopResult]: For program point  L15-3(line 15)  no Hoare annotation was computed.
[2020-11-06 22:17:10,860 INFO  L266        CegarLoopResult]: For program point  fibo1FINAL(lines 9 17)  no Hoare annotation was computed.
[2020-11-06 22:17:10,860 INFO  L266        CegarLoopResult]: For program point  L10(lines 10 16)  no Hoare annotation was computed.
[2020-11-06 22:17:10,861 INFO  L266        CegarLoopResult]: For program point  fibo1EXIT(lines 9 17)  no Hoare annotation was computed.
[2020-11-06 22:17:10,867 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:17:10 BoogieIcfgContainer
[2020-11-06 22:17:10,867 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-11-06 22:17:10,869 INFO  L168              Benchmark]: Toolchain (without parser) took 27065.70 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 126.7 MB in the beginning and 222.3 MB in the end (delta: -95.6 MB). Peak memory consumption was 264.3 MB. Max. memory is 8.0 GB.
[2020-11-06 22:17:10,870 INFO  L168              Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-11-06 22:17:10,880 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 294.07 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-11-06 22:17:10,881 INFO  L168              Benchmark]: Boogie Preprocessor took 33.66 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2020-11-06 22:17:10,882 INFO  L168              Benchmark]: RCFGBuilder took 453.92 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 101.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB.
[2020-11-06 22:17:10,883 INFO  L168              Benchmark]: TraceAbstraction took 26270.39 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 100.8 MB in the beginning and 222.3 MB in the end (delta: -121.5 MB). Peak memory consumption was 239.2 MB. Max. memory is 8.0 GB.
[2020-11-06 22:17:10,890 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 294.07 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 33.66 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 453.92 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 101.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 26270.39 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 100.8 MB in the beginning and 222.3 MB in the end (delta: -121.5 MB). Peak memory consumption was 239.2 MB. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable
    For all program executions holds that call of __VERIFIER_error() unreachable at this location
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.6s, OverallIterations: 12, TraceHistogramMax: 15, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 375 SDtfs, 807 SDslu, 1282 SDs, 0 SdLazy, 5942 SolverSat, 866 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1704 GetRequests, 1353 SyntacticMatches, 15 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 95 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 420 PreInvPairs, 570 NumberOfFragments, 204 HoareAnnotationTreeSize, 420 FomulaSimplifications, 11274 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 6649 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 2139 NumberOfCodeBlocks, 2109 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2117 ConstructedInterpolants, 0 QuantifiedInterpolants, 673967 SizeOfPredicates, 45 NumberOfNonLiveVariables, 2849 ConjunctsInSsa, 191 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 5634/7670 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...