/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c
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This is Ultimate 0.2.1-dev-4f750a8
[2020-12-22 03:41:44,225 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-12-22 03:41:44,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
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[2020-12-22 03:41:44,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-12-22 03:41:44,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
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[2020-12-22 03:41:44,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2020-12-22 03:41:44,391 INFO L113 SettingsManager]: Loading preferences was successful
[2020-12-22 03:41:44,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-12-22 03:41:44,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-12-22 03:41:44,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-12-22 03:41:44,398 INFO L138 SettingsManager]: * Use SBE=true
[2020-12-22 03:41:44,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-12-22 03:41:44,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-12-22 03:41:44,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-12-22 03:41:44,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-12-22 03:41:44,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-12-22 03:41:44,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-12-22 03:41:44,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-12-22 03:41:44,401 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-12-22 03:41:44,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-12-22 03:41:44,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-12-22 03:41:44,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-12-22 03:41:44,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-12-22 03:41:44,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-12-22 03:41:44,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-12-22 03:41:44,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-12-22 03:41:44,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-12-22 03:41:44,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-12-22 03:41:44,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-12-22 03:41:44,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-12-22 03:41:44,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-12-22 03:41:44,404 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-12-22 03:41:44,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-12-22 03:41:44,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-12-22 03:41:44,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-12-22 03:41:44,900 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-12-22 03:41:44,901 INFO L275 PluginConnector]: CDTParser initialized
[2020-12-22 03:41:44,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c
[2020-12-22 03:41:44,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fff186f/efcc881bdd3c4baeb22d334e3fee8640/FLAG2f3b69420
[2020-12-22 03:41:45,659 INFO L306 CDTParser]: Found 1 translation units.
[2020-12-22 03:41:45,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c
[2020-12-22 03:41:45,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fff186f/efcc881bdd3c4baeb22d334e3fee8640/FLAG2f3b69420
[2020-12-22 03:41:46,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fff186f/efcc881bdd3c4baeb22d334e3fee8640
[2020-12-22 03:41:46,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-12-22 03:41:46,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2020-12-22 03:41:46,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-12-22 03:41:46,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-12-22 03:41:46,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-12-22 03:41:46,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:41:46" (1/1) ...
[2020-12-22 03:41:46,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329b9c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46, skipping insertion in model container
[2020-12-22 03:41:46,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:41:46" (1/1) ...
[2020-12-22 03:41:46,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-12-22 03:41:46,051 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-12-22 03:41:46,232 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c[1455,1468]
[2020-12-22 03:41:46,243 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-12-22 03:41:46,251 INFO L203 MainTranslator]: Completed pre-run
[2020-12-22 03:41:46,279 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c[1455,1468]
[2020-12-22 03:41:46,282 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-12-22 03:41:46,301 INFO L208 MainTranslator]: Completed translation
[2020-12-22 03:41:46,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46 WrapperNode
[2020-12-22 03:41:46,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-12-22 03:41:46,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2020-12-22 03:41:46,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2020-12-22 03:41:46,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2020-12-22 03:41:46,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46" (1/1) ...
[2020-12-22 03:41:46,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46" (1/1) ...
[2020-12-22 03:41:46,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2020-12-22 03:41:46,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-12-22 03:41:46,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-12-22 03:41:46,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-12-22 03:41:46,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46" (1/1) ...
[2020-12-22 03:41:46,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46" (1/1) ...
[2020-12-22 03:41:46,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46" (1/1) ...
[2020-12-22 03:41:46,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46" (1/1) ...
[2020-12-22 03:41:46,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46" (1/1) ...
[2020-12-22 03:41:46,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46" (1/1) ...
[2020-12-22 03:41:46,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46" (1/1) ...
[2020-12-22 03:41:46,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-12-22 03:41:46,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-12-22 03:41:46,417 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-12-22 03:41:46,417 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-12-22 03:41:46,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46" (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
[2020-12-22 03:41:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-12-22 03:41:46,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-12-22 03:41:46,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-12-22 03:41:46,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-12-22 03:41:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-12-22 03:41:46,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real
[2020-12-22 03:41:46,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-12-22 03:41:47,058 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-12-22 03:41:47,058 INFO L299 CfgBuilder]: Removed 4 assume(true) statements.
[2020-12-22 03:41:47,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:47 BoogieIcfgContainer
[2020-12-22 03:41:47,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-12-22 03:41:47,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-12-22 03:41:47,066 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-12-22 03:41:47,073 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-12-22 03:41:47,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:41:46" (1/3) ...
[2020-12-22 03:41:47,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c061b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:41:47, skipping insertion in model container
[2020-12-22 03:41:47,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:46" (2/3) ...
[2020-12-22 03:41:47,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c061b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:41:47, skipping insertion in model container
[2020-12-22 03:41:47,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:47" (3/3) ...
[2020-12-22 03:41:47,083 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation2.c.p+cfa-reducer.c
[2020-12-22 03:41:47,092 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-12-22 03:41:47,100 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-12-22 03:41:47,124 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-12-22 03:41:47,169 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-12-22 03:41:47,169 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-12-22 03:41:47,169 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-12-22 03:41:47,169 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-12-22 03:41:47,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-12-22 03:41:47,170 INFO L382 AbstractCegarLoop]: Difference is false
[2020-12-22 03:41:47,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-12-22 03:41:47,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-12-22 03:41:47,191 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states.
[2020-12-22 03:41:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-12-22 03:41:47,198 INFO L414 BasicCegarLoop]: Found error trace
[2020-12-22 03:41:47,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 03:41:47,199 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 03:41:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 03:41:47,207 INFO L82 PathProgramCache]: Analyzing trace with hash 83921358, now seen corresponding path program 1 times
[2020-12-22 03:41:47,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 03:41:47,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075607000]
[2020-12-22 03:41:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 03:41:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 03:41:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 03:41:47,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075607000]
[2020-12-22 03:41:47,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 03:41:47,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-12-22 03:41:47,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996811610]
[2020-12-22 03:41:47,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-12-22 03:41:47,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 03:41:47,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-12-22 03:41:47,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-12-22 03:41:47,515 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states.
[2020-12-22 03:41:47,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 03:41:47,622 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions.
[2020-12-22 03:41:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-12-22 03:41:47,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12
[2020-12-22 03:41:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 03:41:47,634 INFO L225 Difference]: With dead ends: 51
[2020-12-22 03:41:47,634 INFO L226 Difference]: Without dead ends: 27
[2020-12-22 03:41:47,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2020-12-22 03:41:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2020-12-22 03:41:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16.
[2020-12-22 03:41:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2020-12-22 03:41:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions.
[2020-12-22 03:41:47,676 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 12
[2020-12-22 03:41:47,676 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-12-22 03:41:47,677 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions.
[2020-12-22 03:41:47,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-12-22 03:41:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions.
[2020-12-22 03:41:47,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-12-22 03:41:47,679 INFO L414 BasicCegarLoop]: Found error trace
[2020-12-22 03:41:47,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 03:41:47,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-12-22 03:41:47,681 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 03:41:47,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 03:41:47,684 INFO L82 PathProgramCache]: Analyzing trace with hash 100932019, now seen corresponding path program 1 times
[2020-12-22 03:41:47,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 03:41:47,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27987141]
[2020-12-22 03:41:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 03:41:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 03:41:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 03:41:47,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27987141]
[2020-12-22 03:41:47,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 03:41:47,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-12-22 03:41:47,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379012484]
[2020-12-22 03:41:47,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-12-22 03:41:47,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 03:41:47,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-12-22 03:41:47,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-12-22 03:41:47,827 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 3 states.
[2020-12-22 03:41:47,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 03:41:47,863 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions.
[2020-12-22 03:41:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-12-22 03:41:47,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12
[2020-12-22 03:41:47,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 03:41:47,866 INFO L225 Difference]: With dead ends: 34
[2020-12-22 03:41:47,866 INFO L226 Difference]: Without dead ends: 26
[2020-12-22 03:41:47,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-12-22 03:41:47,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2020-12-22 03:41:47,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17.
[2020-12-22 03:41:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2020-12-22 03:41:47,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions.
[2020-12-22 03:41:47,879 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 12
[2020-12-22 03:41:47,880 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-12-22 03:41:47,880 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions.
[2020-12-22 03:41:47,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-12-22 03:41:47,882 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions.
[2020-12-22 03:41:47,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-12-22 03:41:47,883 INFO L414 BasicCegarLoop]: Found error trace
[2020-12-22 03:41:47,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 03:41:47,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-12-22 03:41:47,885 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 03:41:47,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 03:41:47,886 INFO L82 PathProgramCache]: Analyzing trace with hash 10142420, now seen corresponding path program 1 times
[2020-12-22 03:41:47,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 03:41:47,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298580275]
[2020-12-22 03:41:47,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 03:41:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-12-22 03:41:47,954 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-12-22 03:41:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-12-22 03:41:48,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-12-22 03:41:48,049 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-12-22 03:41:48,049 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-12-22 03:41:48,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-12-22 03:41:48,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:41:48 BoogieIcfgContainer
[2020-12-22 03:41:48,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-12-22 03:41:48,122 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2020-12-22 03:41:48,122 INFO L271 PluginConnector]: Initializing Witness Printer...
[2020-12-22 03:41:48,122 INFO L275 PluginConnector]: Witness Printer initialized
[2020-12-22 03:41:48,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:47" (3/4) ...
[2020-12-22 03:41:48,128 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2020-12-22 03:41:48,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2020-12-22 03:41:48,133 INFO L168 Benchmark]: Toolchain (without parser) took 2114.81 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 95.1 MB in the end (delta: 33.9 MB). Peak memory consumption was 34.8 MB. Max. memory is 8.0 GB.
[2020-12-22 03:41:48,135 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory was 127.3 MB in the beginning and 127.2 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-12-22 03:41:48,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.79 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 118.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2020-12-22 03:41:48,142 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2020-12-22 03:41:48,144 INFO L168 Benchmark]: Boogie Preprocessor took 63.11 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 114.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-12-22 03:41:48,146 INFO L168 Benchmark]: RCFGBuilder took 645.42 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 134.9 MB in the end (delta: -20.2 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB.
[2020-12-22 03:41:48,148 INFO L168 Benchmark]: TraceAbstraction took 1057.35 ms. Allocated memory is still 153.1 MB. Free memory was 134.9 MB in the beginning and 95.1 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB.
[2020-12-22 03:41:48,154 INFO L168 Benchmark]: Witness Printer took 6.97 ms. Allocated memory is still 153.1 MB. Free memory is still 95.1 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-12-22 03:41:48,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory was 127.3 MB in the beginning and 127.2 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 284.79 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 118.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 63.11 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 114.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 645.42 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 134.9 MB in the end (delta: -20.2 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1057.35 ms. Allocated memory is still 153.1 MB. Free memory was 134.9 MB in the beginning and 95.1 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB.
* Witness Printer took 6.97 ms. Allocated memory is still 153.1 MB. Free memory is still 95.1 MB. There was no memory consumed. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 53]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 40, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 38.
Possible FailurePath:
[L1] int __return_main;
VAL [__return_main=0]
[L14] int main__i;
[L15] float main__z;
[L16] float main__t;
[L17] float main__min[5] = { 5, 10, 12, 30, 150 };
[L18] float main__max[5] = { 10, 12, 30, 150, 300 };
[L19] float main__org[5] = { 1, 5, -10, 30, 20 };
[L20] float main__slope[5] = { 4, -15, 40, -10, 0 };
[L21] main__t = __VERIFIER_nondet_float()
[L22] int main____CPAchecker_TMP_0;
[L23] EXPR main__min[0]
VAL [__return_main=0]
[L23] COND TRUE main__t >= (main__min[0])
[L25] EXPR main__max[4UL]
VAL [__return_main=0]
[L25] COND TRUE main__t <= (main__max[4UL])
[L27] main____CPAchecker_TMP_0 = 1
VAL [__return_main=0]
[L29] COND TRUE main____CPAchecker_TMP_0 != 0
[L31] main__i = 0
VAL [__return_main=0]
[L33] COND TRUE main__i < 5UL
[L35] EXPR main__max[main__i]
VAL [__return_main=0]
[L35] COND TRUE main__t <= (main__max[main__i])
[L38] EXPR main__org[main__i]
[L38] EXPR main__slope[main__i]
[L38] EXPR main__min[main__i]
[L38] EXPR main__max[main__i]
[L38] EXPR main__min[main__i]
[L38] main__z = (main__org[main__i]) + (((main__slope[main__i]) * (main__t - (main__min[main__i]))) / ((main__max[main__i]) - (main__min[main__i])))
[L39] int main____CPAchecker_TMP_1;
VAL [__return_main=0]
[L40] COND FALSE !(main__z >= -10.0)
VAL [__return_main=0]
[L65] main____CPAchecker_TMP_1 = 0
VAL [__return_main=0]
[L47] int __tmp_1;
[L48] __tmp_1 = main____CPAchecker_TMP_1
[L49] int __VERIFIER_assert__cond;
[L50] __VERIFIER_assert__cond = __tmp_1
VAL [__return_main=0]
[L51] COND TRUE __VERIFIER_assert__cond == 0
VAL [__return_main=0]
[L53] reach_error()
VAL [__return_main=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 49 SDslu, 76 SDs, 0 SdLazy, 24 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...