/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/loop-lit/gsv2008.c.i.v+cfa-reducer.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-7d8eed3
[2020-11-06 22:46:24,171 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-11-06 22:46:24,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-11-06 22:46:24,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-11-06 22:46:24,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-11-06 22:46:24,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-11-06 22:46:24,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-11-06 22:46:24,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
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[2020-11-06 22:46:24,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-06 22:46:24,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-06 22:46:24,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-11-06 22:46:24,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-11-06 22:46:24,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
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[2020-11-06 22:46:24,356 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
[2020-11-06 22:46:24,419 INFO L113 SettingsManager]: Loading preferences was successful
[2020-11-06 22:46:24,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-06 22:46:24,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-11-06 22:46:24,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-11-06 22:46:24,425 INFO L138 SettingsManager]: * Use SBE=true
[2020-11-06 22:46:24,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-06 22:46:24,426 INFO L138 SettingsManager]: * sizeof long=4
[2020-11-06 22:46:24,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-11-06 22:46:24,427 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-11-06 22:46:24,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-11-06 22:46:24,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-11-06 22:46:24,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-11-06 22:46:24,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-11-06 22:46:24,429 INFO L138 SettingsManager]: * sizeof long double=12
[2020-11-06 22:46:24,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-11-06 22:46:24,429 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-11-06 22:46:24,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-11-06 22:46:24,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-06 22:46:24,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-11-06 22:46:24,430 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-11-06 22:46:24,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-11-06 22:46:24,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-06 22:46:24,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-06 22:46:24,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-11-06 22:46:24,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-11-06 22:46:24,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-11-06 22:46:24,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-11-06 22:46:24,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-11-06 22:46:24,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-11-06 22:46:24,433 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-11-06 22:46:24,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-06 22:46:24,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-06 22:46:24,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-06 22:46:24,933 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-11-06 22:46:24,934 INFO L275 PluginConnector]: CDTParser initialized
[2020-11-06 22:46:24,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c
[2020-11-06 22:46:25,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc4ce6919/3cbed346a6f44e9e9e9f8397bb291059/FLAGcbe6fafcb
[2020-11-06 22:46:25,717 INFO L306 CDTParser]: Found 1 translation units.
[2020-11-06 22:46:25,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c
[2020-11-06 22:46:25,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc4ce6919/3cbed346a6f44e9e9e9f8397bb291059/FLAGcbe6fafcb
[2020-11-06 22:46:26,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc4ce6919/3cbed346a6f44e9e9e9f8397bb291059
[2020-11-06 22:46:26,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-06 22:46:26,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-11-06 22:46:26,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-06 22:46:26,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-06 22:46:26,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-06 22:46:26,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:26" (1/1) ...
[2020-11-06 22:46:26,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed87714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26, skipping insertion in model container
[2020-11-06 22:46:26,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:26" (1/1) ...
[2020-11-06 22:46:26,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-11-06 22:46:26,102 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-11-06 22:46:26,274 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-06 22:46:26,285 INFO L203 MainTranslator]: Completed pre-run
[2020-11-06 22:46:26,305 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-06 22:46:26,322 INFO L208 MainTranslator]: Completed translation
[2020-11-06 22:46:26,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26 WrapperNode
[2020-11-06 22:46:26,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-06 22:46:26,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-06 22:46:26,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-06 22:46:26,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-11-06 22:46:26,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ...
[2020-11-06 22:46:26,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ...
[2020-11-06 22:46:26,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ...
[2020-11-06 22:46:26,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ...
[2020-11-06 22:46:26,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ...
[2020-11-06 22:46:26,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ...
[2020-11-06 22:46:26,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ...
[2020-11-06 22:46:26,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-06 22:46:26,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-06 22:46:26,405 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-11-06 22:46:26,405 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-11-06 22:46:26,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (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 22:46:26,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-11-06 22:46:26,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-06 22:46:26,489 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-11-06 22:46:26,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-11-06 22:46:26,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-11-06 22:46:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-11-06 22:46:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-11-06 22:46:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-11-06 22:46:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-06 22:46:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-11-06 22:46:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-11-06 22:46:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-11-06 22:46:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-11-06 22:46:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-11-06 22:46:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-06 22:46:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-06 22:46:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-11-06 22:46:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-11-06 22:46:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-11-06 22:46:26,945 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-06 22:46:26,946 INFO L298 CfgBuilder]: Removed 0 assume(true) statements.
[2020-11-06 22:46:26,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:26 BoogieIcfgContainer
[2020-11-06 22:46:26,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-06 22:46:26,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-11-06 22:46:26,950 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-11-06 22:46:26,956 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-11-06 22:46:26,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:26" (1/3) ...
[2020-11-06 22:46:26,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c6d64f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:26, skipping insertion in model container
[2020-11-06 22:46:26,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (2/3) ...
[2020-11-06 22:46:26,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c6d64f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:26, skipping insertion in model container
[2020-11-06 22:46:26,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:26" (3/3) ...
[2020-11-06 22:46:26,960 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c
[2020-11-06 22:46:26,977 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-11-06 22:46:26,981 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-11-06 22:46:26,995 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-11-06 22:46:27,025 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-11-06 22:46:27,025 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-11-06 22:46:27,025 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-11-06 22:46:27,025 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-11-06 22:46:27,025 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-06 22:46:27,026 INFO L382 AbstractCegarLoop]: Difference is false
[2020-11-06 22:46:27,026 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-06 22:46:27,026 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-11-06 22:46:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states.
[2020-11-06 22:46:27,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-11-06 22:46:27,051 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-06 22:46:27,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:46:27,052 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:46:27,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:46:27,060 INFO L82 PathProgramCache]: Analyzing trace with hash -268642109, now seen corresponding path program 1 times
[2020-11-06 22:46:27,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:46:27,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458249503]
[2020-11-06 22:46:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:46:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:46:27,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:46:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:46:27,381 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 22:46:27,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458249503]
[2020-11-06 22:46:27,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-06 22:46:27,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-11-06 22:46:27,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229898633]
[2020-11-06 22:46:27,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-11-06 22:46:27,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:46:27,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-11-06 22:46:27,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-11-06 22:46:27,413 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states.
[2020-11-06 22:46:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:46:27,575 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions.
[2020-11-06 22:46:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-11-06 22:46:27,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12
[2020-11-06 22:46:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:46:27,586 INFO L225 Difference]: With dead ends: 31
[2020-11-06 22:46:27,586 INFO L226 Difference]: Without dead ends: 14
[2020-11-06 22:46:27,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-11-06 22:46:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2020-11-06 22:46:27,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2020-11-06 22:46:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2020-11-06 22:46:27,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2020-11-06 22:46:27,633 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12
[2020-11-06 22:46:27,634 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:46:27,634 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2020-11-06 22:46:27,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-11-06 22:46:27,634 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2020-11-06 22:46:27,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-11-06 22:46:27,635 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-06 22:46:27,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:46:27,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-11-06 22:46:27,636 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:46:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:46:27,637 INFO L82 PathProgramCache]: Analyzing trace with hash 260084366, now seen corresponding path program 1 times
[2020-11-06 22:46:27,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:46:27,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985398716]
[2020-11-06 22:46:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:46:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:46:27,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:46:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:46:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 22:46:27,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985398716]
[2020-11-06 22:46:27,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483480418]
[2020-11-06 22:46:27,796 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 22:46:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:46:27,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-11-06 22:46:27,866 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:46:27,938 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-06 22:46:27,943 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-06 22:46:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 22:46:27,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:46:27,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7
[2020-11-06 22:46:27,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451589584]
[2020-11-06 22:46:27,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-11-06 22:46:27,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:46:27,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-11-06 22:46:27,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-11-06 22:46:27,970 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states.
[2020-11-06 22:46:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:46:28,134 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions.
[2020-11-06 22:46:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-11-06 22:46:28,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13
[2020-11-06 22:46:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:46:28,136 INFO L225 Difference]: With dead ends: 19
[2020-11-06 22:46:28,136 INFO L226 Difference]: Without dead ends: 15
[2020-11-06 22:46:28,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2020-11-06 22:46:28,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2020-11-06 22:46:28,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2020-11-06 22:46:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2020-11-06 22:46:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2020-11-06 22:46:28,144 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13
[2020-11-06 22:46:28,144 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:46:28,144 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2020-11-06 22:46:28,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-11-06 22:46:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2020-11-06 22:46:28,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-11-06 22:46:28,145 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-06 22:46:28,145 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:46:28,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2020-11-06 22:46:28,359 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:46:28,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:46:28,361 INFO L82 PathProgramCache]: Analyzing trace with hash -529264093, now seen corresponding path program 2 times
[2020-11-06 22:46:28,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:46:28,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303687957]
[2020-11-06 22:46:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:46:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:46:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:46:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:46:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 22:46:28,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303687957]
[2020-11-06 22:46:28,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095216789]
[2020-11-06 22:46:28,484 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 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 22:46:28,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-11-06 22:46:28,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-06 22:46:28,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-11-06 22:46:28,556 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-11-06 22:46:28,597 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-06 22:46:28,600 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-06 22:46:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 22:46:28,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-06 22:46:28,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8
[2020-11-06 22:46:28,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936177053]
[2020-11-06 22:46:28,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-11-06 22:46:28,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:46:28,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-11-06 22:46:28,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-11-06 22:46:28,622 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states.
[2020-11-06 22:46:28,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:46:28,843 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions.
[2020-11-06 22:46:28,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-11-06 22:46:28,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14
[2020-11-06 22:46:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:46:28,845 INFO L225 Difference]: With dead ends: 20
[2020-11-06 22:46:28,845 INFO L226 Difference]: Without dead ends: 16
[2020-11-06 22:46:28,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2020-11-06 22:46:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2020-11-06 22:46:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2020-11-06 22:46:28,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2020-11-06 22:46:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions.
[2020-11-06 22:46:28,853 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14
[2020-11-06 22:46:28,853 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:46:28,853 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions.
[2020-11-06 22:46:28,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-11-06 22:46:28,854 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions.
[2020-11-06 22:46:28,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-11-06 22:46:28,854 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-06 22:46:28,855 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:46:29,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-06 22:46:29,068 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:46:29,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:46:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash 770737454, now seen corresponding path program 3 times
[2020-11-06 22:46:29,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:46:29,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608185963]
[2020-11-06 22:46:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:46:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:46:29,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:46:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:46:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-11-06 22:46:29,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608185963]
[2020-11-06 22:46:29,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-06 22:46:29,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-11-06 22:46:29,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441541775]
[2020-11-06 22:46:29,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-11-06 22:46:29,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:46:29,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-11-06 22:46:29,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-11-06 22:46:29,175 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states.
[2020-11-06 22:46:29,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:46:29,264 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions.
[2020-11-06 22:46:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-11-06 22:46:29,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15
[2020-11-06 22:46:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:46:29,265 INFO L225 Difference]: With dead ends: 16
[2020-11-06 22:46:29,265 INFO L226 Difference]: Without dead ends: 0
[2020-11-06 22:46:29,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2020-11-06 22:46:29,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-11-06 22:46:29,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-11-06 22:46:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-11-06 22:46:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-11-06 22:46:29,267 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15
[2020-11-06 22:46:29,267 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:46:29,267 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-11-06 22:46:29,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-11-06 22:46:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-11-06 22:46:29,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-11-06 22:46:29,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-11-06 22:46:29,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-11-06 22:46:29,408 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed.
[2020-11-06 22:46:29,408 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true
[2020-11-06 22:46:29,409 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed.
[2020-11-06 22:46:29,409 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed.
[2020-11-06 22:46:29,409 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2020-11-06 22:46:29,409 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)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~__return_65~0 |old(~__return_65~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|))
[2020-11-06 22:46:29,410 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-11-06 22:46:29,410 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-11-06 22:46:29,410 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-11-06 22:46:29,410 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-11-06 22:46:29,410 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-11-06 22:46:29,410 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed.
[2020-11-06 22:46:29,410 INFO L266 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed.
[2020-11-06 22:46:29,411 INFO L266 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed.
[2020-11-06 22:46:29,411 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed.
[2020-11-06 22:46:29,411 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 13 60) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0)
[2020-11-06 22:46:29,411 INFO L266 CegarLoopResult]: For program point L25(lines 25 58) no Hoare annotation was computed.
[2020-11-06 22:46:29,411 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 13 60) no Hoare annotation was computed.
[2020-11-06 22:46:29,411 INFO L266 CegarLoopResult]: For program point L19(lines 19 59) no Hoare annotation was computed.
[2020-11-06 22:46:29,412 INFO L262 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: false
[2020-11-06 22:46:29,412 INFO L266 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed.
[2020-11-06 22:46:29,412 INFO L266 CegarLoopResult]: For program point L46(lines 46 55) no Hoare annotation was computed.
[2020-11-06 22:46:29,412 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 13 60) no Hoare annotation was computed.
[2020-11-06 22:46:29,412 INFO L262 CegarLoopResult]: At program point L37(lines 30 58) the Hoare annotation is: (let ((.cse0 (= |old(~__return_65~0)| ~__return_65~0))) (or (and .cse0 (<= (+ main_~main__x~0 50) 0)) (and .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0))))
[2020-11-06 22:46:29,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:46:29 BoogieIcfgContainer
[2020-11-06 22:46:29,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-11-06 22:46:29,434 INFO L168 Benchmark]: Toolchain (without parser) took 3372.59 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 133.1 MB in the beginning and 71.7 MB in the end (delta: 61.4 MB). Peak memory consumption was 91.3 MB. Max. memory is 8.0 GB.
[2020-11-06 22:46:29,435 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 74.8 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-11-06 22:46:29,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.42 ms. Allocated memory is still 151.0 MB. Free memory was 132.4 MB in the beginning and 123.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-11-06 22:46:29,437 INFO L168 Benchmark]: Boogie Preprocessor took 79.31 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 134.5 MB in the end (delta: -11.5 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB.
[2020-11-06 22:46:29,438 INFO L168 Benchmark]: RCFGBuilder took 543.62 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 120.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
[2020-11-06 22:46:29,439 INFO L168 Benchmark]: TraceAbstraction took 2481.24 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 120.3 MB in the beginning and 71.7 MB in the end (delta: 48.6 MB). Peak memory consumption was 80.0 MB. Max. memory is 8.0 GB.
[2020-11-06 22:46:29,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 74.8 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 256.42 ms. Allocated memory is still 151.0 MB. Free memory was 132.4 MB in the beginning and 123.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 79.31 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 134.5 MB in the end (delta: -11.5 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 543.62 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 120.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 2481.24 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 120.3 MB in the beginning and 71.7 MB in the end (delta: 48.6 MB). Peak memory consumption was 80.0 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
- InvariantResult [Line: 30]: Loop Invariant
Derived loop invariant: (\old(__return_65) == __return_65 && main__x + 50 <= 0) || (\old(__return_65) == __return_65 && main__x + 2 <= main__y)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 37 SDslu, 60 SDs, 0 SdLazy, 97 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 63 HoareAnnotationTreeSize, 10 FomulaSimplifications, 96 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 4054 SizeOfPredicates, 8 NumberOfNonLiveVariables, 233 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 6/14 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...