java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/array-crafted/xor5.i
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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 17:41:58,283 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2019-10-13 17:41:58,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 17:41:58,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 17:41:58,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 17:41:58,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 17:41:58,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 17:41:58,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 17:41:58,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 17:41:58,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 17:41:58,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 17:41:58,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 17:41:58,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 17:41:58,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 17:41:58,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 17:41:58,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 17:41:58,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 17:41:58,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 17:41:58,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 17:41:58,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 17:41:58,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 17:41:58,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 17:41:58,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 17:41:58,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 17:41:58,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-10-13 17:41:58,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 17:41:58,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2019-10-13 17:41:58,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2019-10-13 17:41:58,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2019-10-13 17:41:58,356 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
[2019-10-13 17:41:58,370 INFO L113 SettingsManager]: Loading preferences was successful
[2019-10-13 17:41:58,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 17:41:58,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 17:41:58,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2019-10-13 17:41:58,372 INFO L138 SettingsManager]: * Use SBE=true
[2019-10-13 17:41:58,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 17:41:58,373 INFO L138 SettingsManager]: * sizeof long=4
[2019-10-13 17:41:58,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2019-10-13 17:41:58,373 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-10-13 17:41:58,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-10-13 17:41:58,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 17:41:58,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 17:41:58,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 17:41:58,374 INFO L138 SettingsManager]: * sizeof long double=12
[2019-10-13 17:41:58,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-10-13 17:41:58,374 INFO L138 SettingsManager]: * Use constant arrays=true
[2019-10-13 17:41:58,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-10-13 17:41:58,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 17:41:58,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-10-13 17:41:58,375 INFO L138 SettingsManager]: * To the following directory=./dump/
[2019-10-13 17:41:58,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2019-10-13 17:41:58,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 17:41:58,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 17:41:58,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 17:41:58,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 17:41:58,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2019-10-13 17:41:58,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 17:41:58,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 17:41:58,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 17:41:58,705 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 17:41:58,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 17:41:58,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 17:41:58,730 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-10-13 17:41:58,730 INFO L275 PluginConnector]: CDTParser initialized
[2019-10-13 17:41:58,731 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor5.i
[2019-10-13 17:41:58,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fdbac503/0b9ac9d874fb4b55a907af43b8d23ce1/FLAGccac615e1
[2019-10-13 17:41:59,249 INFO L306 CDTParser]: Found 1 translation units.
[2019-10-13 17:41:59,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor5.i
[2019-10-13 17:41:59,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fdbac503/0b9ac9d874fb4b55a907af43b8d23ce1/FLAGccac615e1
[2019-10-13 17:41:59,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fdbac503/0b9ac9d874fb4b55a907af43b8d23ce1
[2019-10-13 17:41:59,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 17:41:59,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 17:41:59,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 17:41:59,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 17:41:59,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 17:41:59,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:41:59" (1/1) ...
[2019-10-13 17:41:59,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d728e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:41:59, skipping insertion in model container
[2019-10-13 17:41:59,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:41:59" (1/1) ...
[2019-10-13 17:41:59,651 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-10-13 17:41:59,670 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-10-13 17:41:59,890 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:41:59,899 INFO L188 MainTranslator]: Completed pre-run
[2019-10-13 17:41:59,921 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:42:00,023 INFO L192 MainTranslator]: Completed translation
[2019-10-13 17:42:00,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:42:00 WrapperNode
[2019-10-13 17:42:00,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 17:42:00,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 17:42:00,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 17:42:00,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 17:42:00,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:42:00" (1/1) ...
[2019-10-13 17:42:00,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:42:00" (1/1) ...
[2019-10-13 17:42:00,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:42:00" (1/1) ...
[2019-10-13 17:42:00,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:42:00" (1/1) ...
[2019-10-13 17:42:00,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:42:00" (1/1) ...
[2019-10-13 17:42:00,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:42:00" (1/1) ...
[2019-10-13 17:42:00,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:42:00" (1/1) ...
[2019-10-13 17:42:00,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 17:42:00,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 17:42:00,064 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 17:42:00,065 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-10-13 17:42:00,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:42:00" (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
[2019-10-13 17:42:00,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 17:42:00,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 17:42:00,121 INFO L138 BoogieDeclarations]: Found implementation of procedure xor
[2019-10-13 17:42:00,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 17:42:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 17:42:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 17:42:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure xor
[2019-10-13 17:42:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2019-10-13 17:42:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2019-10-13 17:42:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-13 17:42:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2019-10-13 17:42:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-13 17:42:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 17:42:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 17:42:00,431 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 17:42:00,432 INFO L284 CfgBuilder]: Removed 3 assume(true) statements.
[2019-10-13 17:42:00,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:42:00 BoogieIcfgContainer
[2019-10-13 17:42:00,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 17:42:00,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 17:42:00,434 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 17:42:00,437 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-10-13 17:42:00,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:41:59" (1/3) ...
[2019-10-13 17:42:00,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dee6443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:42:00, skipping insertion in model container
[2019-10-13 17:42:00,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:42:00" (2/3) ...
[2019-10-13 17:42:00,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dee6443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:42:00, skipping insertion in model container
[2019-10-13 17:42:00,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:42:00" (3/3) ...
[2019-10-13 17:42:00,441 INFO L109 eAbstractionObserver]: Analyzing ICFG xor5.i
[2019-10-13 17:42:00,453 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 17:42:00,460 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 17:42:00,470 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 17:42:00,495 INFO L373 AbstractCegarLoop]: Interprodecural is true
[2019-10-13 17:42:00,495 INFO L374 AbstractCegarLoop]: Hoare is true
[2019-10-13 17:42:00,496 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 17:42:00,496 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 17:42:00,496 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 17:42:00,496 INFO L378 AbstractCegarLoop]: Difference is false
[2019-10-13 17:42:00,496 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 17:42:00,496 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 17:42:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states.
[2019-10-13 17:42:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2019-10-13 17:42:00,521 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 17:42:00,522 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:42:00,523 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:42:00,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:42:00,529 INFO L82 PathProgramCache]: Analyzing trace with hash 911672298, now seen corresponding path program 1 times
[2019-10-13 17:42:00,536 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:42:00,536 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948500663]
[2019-10-13 17:42:00,537 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:42:00,537 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:42:00,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:42:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2019-10-13 17:42:00,753 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948500663]
[2019-10-13 17:42:00,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:42:00,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-13 17:42:00,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559920526]
[2019-10-13 17:42:00,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 17:42:00,762 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:42:00,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 17:42:00,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 17:42:00,778 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states.
[2019-10-13 17:42:00,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:42:00,908 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions.
[2019-10-13 17:42:00,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2019-10-13 17:42:00,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33
[2019-10-13 17:42:00,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:42:00,921 INFO L225 Difference]: With dead ends: 57
[2019-10-13 17:42:00,921 INFO L226 Difference]: Without dead ends: 27
[2019-10-13 17:42:00,925 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 17:42:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2019-10-13 17:42:00,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2019-10-13 17:42:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2019-10-13 17:42:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions.
[2019-10-13 17:42:00,974 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33
[2019-10-13 17:42:00,974 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:42:00,975 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions.
[2019-10-13 17:42:00,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 17:42:00,975 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions.
[2019-10-13 17:42:00,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2019-10-13 17:42:00,977 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 17:42:00,978 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:42:00,978 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:42:00,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:42:00,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1776857700, now seen corresponding path program 1 times
[2019-10-13 17:42:00,979 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:42:00,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260050732]
[2019-10-13 17:42:00,980 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:42:00,980 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:42:00,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:42:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2019-10-13 17:42:01,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260050732]
[2019-10-13 17:42:01,138 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:42:01,138 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 17:42:01,139 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566444475]
[2019-10-13 17:42:01,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 17:42:01,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:42:01,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 17:42:01,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 17:42:01,142 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states.
[2019-10-13 17:42:01,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:42:01,265 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions.
[2019-10-13 17:42:01,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2019-10-13 17:42:01,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33
[2019-10-13 17:42:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:42:01,267 INFO L225 Difference]: With dead ends: 47
[2019-10-13 17:42:01,267 INFO L226 Difference]: Without dead ends: 29
[2019-10-13 17:42:01,268 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 17:42:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2019-10-13 17:42:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28.
[2019-10-13 17:42:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2019-10-13 17:42:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2019-10-13 17:42:01,282 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33
[2019-10-13 17:42:01,282 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:42:01,283 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2019-10-13 17:42:01,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 17:42:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2019-10-13 17:42:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2019-10-13 17:42:01,286 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 17:42:01,287 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:42:01,288 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:42:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:42:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash -725304090, now seen corresponding path program 1 times
[2019-10-13 17:42:01,289 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:42:01,290 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137751091]
[2019-10-13 17:42:01,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:42:01,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:42:01,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:42:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2019-10-13 17:42:01,450 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137751091]
[2019-10-13 17:42:01,450 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257664865]
[2019-10-13 17:42:01,451 INFO L94 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
[2019-10-13 17:42:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:01,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 17:42:01,531 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:42:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2019-10-13 17:42:01,640 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 17:42:01,640 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8
[2019-10-13 17:42:01,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287092553]
[2019-10-13 17:42:01,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 17:42:01,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:42:01,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 17:42:01,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2019-10-13 17:42:01,643 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states.
[2019-10-13 17:42:01,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:42:01,908 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions.
[2019-10-13 17:42:01,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2019-10-13 17:42:01,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35
[2019-10-13 17:42:01,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:42:01,910 INFO L225 Difference]: With dead ends: 51
[2019-10-13 17:42:01,910 INFO L226 Difference]: Without dead ends: 33
[2019-10-13 17:42:01,911 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110
[2019-10-13 17:42:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2019-10-13 17:42:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31.
[2019-10-13 17:42:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2019-10-13 17:42:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions.
[2019-10-13 17:42:01,927 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 35
[2019-10-13 17:42:01,927 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:42:01,927 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions.
[2019-10-13 17:42:01,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 17:42:01,928 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions.
[2019-10-13 17:42:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2019-10-13 17:42:01,933 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 17:42:01,933 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:42:02,134 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:42:02,135 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:42:02,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:42:02,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1245458630, now seen corresponding path program 1 times
[2019-10-13 17:42:02,137 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:42:02,137 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011570932]
[2019-10-13 17:42:02,137 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:42:02,138 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:42:02,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:42:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2019-10-13 17:42:02,308 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011570932]
[2019-10-13 17:42:02,309 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933915508]
[2019-10-13 17:42:02,309 INFO L94 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
[2019-10-13 17:42:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:42:02,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core
[2019-10-13 17:42:02,379 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:42:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2019-10-13 17:42:02,415 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:42:02,415 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7
[2019-10-13 17:42:02,415 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362758570]
[2019-10-13 17:42:02,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 17:42:02,416 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:42:02,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 17:42:02,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:42:02,417 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states.
[2019-10-13 17:42:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:42:02,466 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions.
[2019-10-13 17:42:02,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2019-10-13 17:42:02,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43
[2019-10-13 17:42:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:42:02,468 INFO L225 Difference]: With dead ends: 46
[2019-10-13 17:42:02,468 INFO L226 Difference]: Without dead ends: 33
[2019-10-13 17:42:02,469 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:42:02,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2019-10-13 17:42:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32.
[2019-10-13 17:42:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2019-10-13 17:42:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions.
[2019-10-13 17:42:02,476 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43
[2019-10-13 17:42:02,478 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:42:02,478 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions.
[2019-10-13 17:42:02,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 17:42:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions.
[2019-10-13 17:42:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2019-10-13 17:42:02,480 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 17:42:02,480 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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]
[2019-10-13 17:42:02,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:42:02,684 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:42:02,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:42:02,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1209882084, now seen corresponding path program 1 times
[2019-10-13 17:42:02,685 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:42:02,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141012017]
[2019-10-13 17:42:02,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:42:02,687 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:42:02,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:42:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-13 17:42:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-13 17:42:02,846 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace
[2019-10-13 17:42:02,846 INFO L445 BasicCegarLoop]: Counterexample might be feasible
[2019-10-13 17:42:02,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:42:02 BoogieIcfgContainer
[2019-10-13 17:42:02,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2019-10-13 17:42:02,930 INFO L168 Benchmark]: Toolchain (without parser) took 3293.37 ms. Allocated memory was 142.1 MB in the beginning and 227.0 MB in the end (delta: 84.9 MB). Free memory was 99.7 MB in the beginning and 120.1 MB in the end (delta: -20.4 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB.
[2019-10-13 17:42:02,931 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2019-10-13 17:42:02,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.19 ms. Allocated memory was 142.1 MB in the beginning and 200.3 MB in the end (delta: 58.2 MB). Free memory was 99.5 MB in the beginning and 179.4 MB in the end (delta: -79.9 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB.
[2019-10-13 17:42:02,934 INFO L168 Benchmark]: Boogie Preprocessor took 39.22 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 176.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB.
[2019-10-13 17:42:02,936 INFO L168 Benchmark]: RCFGBuilder took 369.01 ms. Allocated memory is still 200.3 MB. Free memory was 176.9 MB in the beginning and 160.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB.
[2019-10-13 17:42:02,937 INFO L168 Benchmark]: TraceAbstraction took 2491.59 ms. Allocated memory was 200.3 MB in the beginning and 227.0 MB in the end (delta: 26.7 MB). Free memory was 160.0 MB in the beginning and 120.1 MB in the end (delta: 39.9 MB). Peak memory consumption was 66.6 MB. Max. memory is 7.1 GB.
[2019-10-13 17:42:02,941 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.51 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 389.19 ms. Allocated memory was 142.1 MB in the beginning and 200.3 MB in the end (delta: 58.2 MB). Free memory was 99.5 MB in the beginning and 179.4 MB in the end (delta: -79.9 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 39.22 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 176.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 369.01 ms. Allocated memory is still 200.3 MB. Free memory was 176.9 MB in the beginning and 160.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2491.59 ms. Allocated memory was 200.3 MB in the beginning and 227.0 MB in the end (delta: 26.7 MB). Free memory was 160.0 MB in the beginning and 120.1 MB in the end (delta: 39.9 MB). Peak memory consumption was 66.6 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 46]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of bitwiseXor at line 14.
Possible FailurePath:
[L6] int N;
VAL [\old(N)=10, N=0]
[L21] N = __VERIFIER_nondet_int()
[L22] COND TRUE N > 1
[L23] int x[N];
[L24] int temp;
[L25] int ret;
[L26] int ret2;
[L27] int ret5;
[L29] int i = 0;
VAL [\old(N)=0, i=0, N=2, x={1:0}]
[L29] COND TRUE i < N
[L31] x[i] = __VERIFIER_nondet_int()
[L29] i++
VAL [\old(N)=0, i=1, N=2, x={1:0}]
[L29] COND TRUE i < N
[L31] x[i] = __VERIFIER_nondet_int()
[L29] i++
VAL [\old(N)=0, i=2, N=2, x={1:0}]
[L29] COND FALSE !(i < N)
VAL [\old(N)=0, i=2, N=2, x={1:0}]
[L34] CALL, EXPR xor(x)
VAL [\old(N)=0, N=2, x={1:0}]
[L10] int i;
[L11] long long res;
[L12] EXPR x[0]
[L12] res = x[0]
[L13] i = 1
VAL [\old(N)=0, i=1, N=2, res=0, x={1:0}, x={1:0}]
[L13] COND TRUE i < N
[L14] EXPR x[i]
[L14] res = res ^ x[i]
[L13] i++
VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}]
[L13] COND FALSE !(i < N)
VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}]
[L16] return res;
VAL [\old(N)=0, \result=-2, i=2, N=2, res=4294967294, x={1:0}, x={1:0}]
[L34] RET, EXPR xor(x)
VAL [\old(N)=0, i=2, N=2, x={1:0}, xor(x)=-2]
[L34] ret = xor(x)
[L36] EXPR x[0]
[L36] temp=x[0]
[L36] EXPR x[1]
[L36] x[0] = x[1]
[L36] x[1] = temp
VAL [\old(N)=0, i=2, N=2, ret=-2, temp=0, x={1:0}]
[L37] CALL, EXPR xor(x)
VAL [\old(N)=0, N=2, x={1:0}]
[L10] int i;
[L11] long long res;
[L12] EXPR x[0]
[L12] res = x[0]
[L13] i = 1
VAL [\old(N)=0, i=1, N=2, res=0, x={1:0}, x={1:0}]
[L13] COND TRUE i < N
[L14] EXPR x[i]
[L14] res = res ^ x[i]
[L13] i++
VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}]
[L13] COND FALSE !(i < N)
VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}]
[L16] return res;
VAL [\old(N)=0, \result=-3, i=2, N=2, res=4294967293, x={1:0}, x={1:0}]
[L37] RET, EXPR xor(x)
VAL [\old(N)=0, i=2, N=2, ret=-2, temp=0, x={1:0}, xor(x)=-3]
[L37] ret2 = xor(x)
[L38] EXPR x[0]
[L38] temp=x[0]
[L39] int i =0 ;
VAL [\old(N)=0, i=2, i=0, N=2, ret=-2, ret2=-3, temp=0, x={1:0}]
[L39] COND TRUE i<N-1
[L40] EXPR x[i+1]
[L40] x[i] = x[i+1]
[L39] i++
VAL [\old(N)=0, i=2, i=1, N=2, ret=-2, ret2=-3, temp=0, x={1:0}]
[L39] COND FALSE !(i<N-1)
VAL [\old(N)=0, i=1, i=2, N=2, ret=-2, ret2=-3, temp=0, x={1:0}]
[L42] x[N-1] = temp
VAL [\old(N)=0, i=1, i=2, N=2, ret=-2, ret2=-3, temp=0, x={1:0}]
[L43] CALL, EXPR xor(x)
VAL [\old(N)=0, N=2, x={1:0}]
[L10] int i;
[L11] long long res;
[L12] EXPR x[0]
[L12] res = x[0]
[L13] i = 1
VAL [\old(N)=0, i=1, N=2, res=0, x={1:0}, x={1:0}]
[L13] COND TRUE i < N
[L14] EXPR x[i]
[L14] res = res ^ x[i]
[L13] i++
VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}]
[L13] COND FALSE !(i < N)
VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}]
[L16] return res;
VAL [\old(N)=0, \result=-1, i=2, N=2, res=4294967295, x={1:0}, x={1:0}]
[L43] RET, EXPR xor(x)
VAL [\old(N)=0, i=2, i=1, N=2, ret=-2, ret2=-3, temp=0, x={1:0}, xor(x)=-1]
[L43] ret5 = xor(x)
[L45] COND TRUE ret != ret2 || ret !=ret5
VAL [\old(N)=0, i=1, i=2, N=2, ret=-2, ret2=-3, ret5=-1, temp=0, x={1:0}]
[L46] __VERIFIER_error()
VAL [\old(N)=0, i=1, i=2, N=2, ret=-2, ret2=-3, ret5=-1, temp=0, x={1:0}]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 33 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 57 SDslu, 72 SDs, 0 SdLazy, 207 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 267 NumberOfCodeBlocks, 267 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 15116 SizeOfPredicates, 4 NumberOfNonLiveVariables, 299 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 101/130 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...