/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 19:35:03,468 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 19:35:03,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 19:35:03,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 19:35:03,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 19:35:03,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 19:35:03,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 19:35:03,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 19:35:03,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 19:35:03,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 19:35:03,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 19:35:03,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 19:35:03,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 19:35:03,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 19:35:03,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 19:35:03,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 19:35:03,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 19:35:03,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 19:35:03,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 19:35:03,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 19:35:03,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 19:35:03,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 19:35:03,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 19:35:03,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 19:35:03,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 19:35:03,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 19:35:03,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 19:35:03,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 19:35:03,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 19:35:03,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 19:35:03,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 19:35:03,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 19:35:03,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 19:35:03,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 19:35:03,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 19:35:03,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 19:35:03,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 19:35:03,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 19:35:03,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 19:35:03,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 19:35:03,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 19:35:03,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 19:35:03,569 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 19:35:03,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 19:35:03,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 19:35:03,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 19:35:03,571 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 19:35:03,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 19:35:03,571 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 19:35:03,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 19:35:03,571 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 19:35:03,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 19:35:03,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 19:35:03,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 19:35:03,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 19:35:03,572 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 19:35:03,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 19:35:03,573 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 19:35:03,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 19:35:03,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 19:35:03,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 19:35:03,574 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 19:35:03,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 19:35:03,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 19:35:03,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 19:35:03,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 19:35:03,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 19:35:03,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 19:35:03,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 19:35:03,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 19:35:03,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 19:35:03,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-09-24 19:35:04,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 19:35:04,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 19:35:04,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 19:35:04,135 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 19:35:04,137 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 19:35:04,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i
[2020-09-24 19:35:04,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44fff3dce/e930024bf5424ac88f860f1a565c9929/FLAG1c49306e0
[2020-09-24 19:35:04,708 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 19:35:04,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.i
[2020-09-24 19:35:04,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44fff3dce/e930024bf5424ac88f860f1a565c9929/FLAG1c49306e0
[2020-09-24 19:35:05,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44fff3dce/e930024bf5424ac88f860f1a565c9929
[2020-09-24 19:35:05,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 19:35:05,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 19:35:05,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 19:35:05,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 19:35:05,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 19:35:05,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e14926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05, skipping insertion in model container
[2020-09-24 19:35:05,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 19:35:05,134 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 19:35:05,357 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:35:05,362 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 19:35:05,381 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:35:05,399 INFO L208 MainTranslator]: Completed translation
[2020-09-24 19:35:05,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05 WrapperNode
[2020-09-24 19:35:05,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 19:35:05,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 19:35:05,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 19:35:05,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 19:35:05,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 19:35:05,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 19:35:05,530 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 19:35:05,530 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 19:35:05,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-09-24 19:35:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 19:35:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 19:35:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 19:35:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-24 19:35:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 19:35:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 19:35:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 19:35:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 19:35:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-24 19:35:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 19:35:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 19:35:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 19:35:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 19:35:05,870 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 19:35:05,871 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 19:35:05,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:05 BoogieIcfgContainer
[2020-09-24 19:35:05,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 19:35:05,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 19:35:05,881 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 19:35:05,885 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 19:35:05,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:35:05" (1/3) ...
[2020-09-24 19:35:05,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746bb246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:05, skipping insertion in model container
[2020-09-24 19:35:05,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (2/3) ...
[2020-09-24 19:35:05,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746bb246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:05, skipping insertion in model container
[2020-09-24 19:35:05,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:05" (3/3) ...
[2020-09-24 19:35:05,889 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.i
[2020-09-24 19:35:05,913 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 19:35:05,925 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 19:35:05,945 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 19:35:05,975 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 19:35:05,975 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 19:35:05,975 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 19:35:05,975 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 19:35:05,976 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 19:35:05,976 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 19:35:05,977 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 19:35:05,977 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 19:35:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states.
[2020-09-24 19:35:06,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-09-24 19:35:06,010 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 19:35:06,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 19:35:06,012 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:35:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:35:06,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2104509233, now seen corresponding path program 1 times
[2020-09-24 19:35:06,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:35:06,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503899644]
[2020-09-24 19:35:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:35:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:06,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:06,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 19:35:06,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:35:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71
[2020-09-24 19:35:06,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:35:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-24 19:35:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:35:06,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 19:35:06,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 19:35:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:06,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:06,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:06,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 19:35:06,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:35:06,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 19:35:06,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:35:06,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 19:35:06,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:35:06,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:35:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 19:35:06,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503899644]
[2020-09-24 19:35:06,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 19:35:06,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-09-24 19:35:06,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001088988]
[2020-09-24 19:35:06,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-09-24 19:35:06,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 19:35:06,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-09-24 19:35:06,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-24 19:35:06,310 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states.
[2020-09-24 19:35:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 19:35:06,347 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions.
[2020-09-24 19:35:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-09-24 19:35:06,349 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16
[2020-09-24 19:35:06,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 19:35:06,362 INFO L225 Difference]: With dead ends: 41
[2020-09-24 19:35:06,362 INFO L226 Difference]: Without dead ends: 21
[2020-09-24 19:35:06,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-24 19:35:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2020-09-24 19:35:06,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2020-09-24 19:35:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2020-09-24 19:35:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions.
[2020-09-24 19:35:06,414 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16
[2020-09-24 19:35:06,415 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 19:35:06,415 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions.
[2020-09-24 19:35:06,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-09-24 19:35:06,415 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions.
[2020-09-24 19:35:06,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-09-24 19:35:06,416 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 19:35:06,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 19:35:06,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 19:35:06,417 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:35:06,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:35:06,418 INFO L82 PathProgramCache]: Analyzing trace with hash 2097121065, now seen corresponding path program 1 times
[2020-09-24 19:35:06,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:35:06,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406595550]
[2020-09-24 19:35:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:35:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:06,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:06,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:06,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 19:35:06,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:35:06,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-09-24 19:35:06,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 19:35:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-24 19:35:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 19:35:06,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:35:06,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 19:35:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:06,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:06,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:06,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 19:35:06,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:35:06,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 19:35:06,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:35:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 19:35:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:35:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:35:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 19:35:06,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406595550]
[2020-09-24 19:35:06,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 19:35:06,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 19:35:06,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122242478]
[2020-09-24 19:35:06,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 19:35:06,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 19:35:06,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 19:35:06,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 19:35:06,514 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states.
[2020-09-24 19:35:06,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 19:35:06,538 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions.
[2020-09-24 19:35:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 19:35:06,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16
[2020-09-24 19:35:06,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 19:35:06,540 INFO L225 Difference]: With dead ends: 28
[2020-09-24 19:35:06,540 INFO L226 Difference]: Without dead ends: 23
[2020-09-24 19:35:06,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 19:35:06,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2020-09-24 19:35:06,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22.
[2020-09-24 19:35:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2020-09-24 19:35:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions.
[2020-09-24 19:35:06,548 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16
[2020-09-24 19:35:06,549 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 19:35:06,549 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions.
[2020-09-24 19:35:06,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 19:35:06,549 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions.
[2020-09-24 19:35:06,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-09-24 19:35:06,550 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 19:35:06,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 19:35:06,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 19:35:06,552 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:35:06,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:35:06,552 INFO L82 PathProgramCache]: Analyzing trace with hash -588245929, now seen corresponding path program 1 times
[2020-09-24 19:35:06,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:35:06,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957887710]
[2020-09-24 19:35:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:35:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:06,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:06,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:07,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:07,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30
[2020-09-24 19:35:07,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 19:35:07,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481
[2020-09-24 19:35:07,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 19:35:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-24 19:35:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-24 19:35:07,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:35:07,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 19:35:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:07,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:07,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:07,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 19:35:07,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:35:07,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 19:35:07,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:07,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:35:07,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 19:35:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:35:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 19:35:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 19:35:07,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957887710]
[2020-09-24 19:35:07,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 19:35:07,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-09-24 19:35:07,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206682682]
[2020-09-24 19:35:07,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-24 19:35:07,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 19:35:07,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-24 19:35:07,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2020-09-24 19:35:07,184 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states.
[2020-09-24 19:35:07,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 19:35:07,350 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions.
[2020-09-24 19:35:07,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-09-24 19:35:07,351 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21
[2020-09-24 19:35:07,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 19:35:07,351 INFO L225 Difference]: With dead ends: 23
[2020-09-24 19:35:07,352 INFO L226 Difference]: Without dead ends: 0
[2020-09-24 19:35:07,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182
[2020-09-24 19:35:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 19:35:07,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 19:35:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 19:35:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 19:35:07,354 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21
[2020-09-24 19:35:07,354 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 19:35:07,355 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 19:35:07,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-24 19:35:07,355 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 19:35:07,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 19:35:07,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 19:35:07,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 19:35:07,411 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-24 19:35:07,412 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 19:35:07,412 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 19:35:07,412 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-24 19:35:07,412 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-24 19:35:07,413 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-24 19:35:07,413 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed.
[2020-09-24 19:35:07,413 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed.
[2020-09-24 19:35:07,413 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed.
[2020-09-24 19:35:07,413 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed.
[2020-09-24 19:35:07,413 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed.
[2020-09-24 19:35:07,414 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 24) no Hoare annotation was computed.
[2020-09-24 19:35:07,414 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed.
[2020-09-24 19:35:07,414 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed.
[2020-09-24 19:35:07,414 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed.
[2020-09-24 19:35:07,414 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-09-24 19:35:07,415 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 24) no Hoare annotation was computed.
[2020-09-24 19:35:07,415 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 24) the Hoare annotation is: true
[2020-09-24 19:35:07,415 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed.
[2020-09-24 19:35:07,415 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed.
[2020-09-24 19:35:07,415 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed.
[2020-09-24 19:35:07,415 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed.
[2020-09-24 19:35:07,416 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-24 19:35:07,416 INFO L264 CegarLoopResult]: At program point L18-2(lines 18 21) the Hoare annotation is: (or (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 2) main_~y~0))
[2020-09-24 19:35:07,416 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed.
[2020-09-24 19:35:07,416 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 21) the Hoare annotation is: (and (<= 2 main_~y~0) (<= (+ main_~x~0 2) main_~y~0))
[2020-09-24 19:35:07,417 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed.
[2020-09-24 19:35:07,417 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed.
[2020-09-24 19:35:07,417 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true
[2020-09-24 19:35:07,417 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed.
[2020-09-24 19:35:07,417 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-24 19:35:07,418 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed.
[2020-09-24 19:35:07,418 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed.
[2020-09-24 19:35:07,418 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed.
[2020-09-24 19:35:07,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:35:07 BoogieIcfgContainer
[2020-09-24 19:35:07,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 19:35:07,458 INFO L168 Benchmark]: Toolchain (without parser) took 2374.53 ms. Allocated memory was 145.8 MB in the beginning and 233.8 MB in the end (delta: 88.1 MB). Free memory was 100.9 MB in the beginning and 204.5 MB in the end (delta: -103.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,459 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.32 ms. Allocated memory is still 145.8 MB. Free memory was 100.3 MB in the beginning and 91.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,462 INFO L168 Benchmark]: Boogie Preprocessor took 128.61 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.0 MB in the beginning and 181.9 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,463 INFO L168 Benchmark]: RCFGBuilder took 347.48 ms. Allocated memory is still 201.9 MB. Free memory was 181.9 MB in the beginning and 168.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,464 INFO L168 Benchmark]: TraceAbstraction took 1573.99 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 167.4 MB in the beginning and 204.5 MB in the end (delta: -37.1 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,468 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 309.32 ms. Allocated memory is still 145.8 MB. Free memory was 100.3 MB in the beginning and 91.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 128.61 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.0 MB in the beginning and 181.9 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 347.48 ms. Allocated memory is still 201.9 MB. Free memory was 181.9 MB in the beginning and 168.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1573.99 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 167.4 MB in the beginning and 204.5 MB in the end (delta: -37.1 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 8]: 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: 18]: Loop Invariant
Derived loop invariant: x + 50 <= 0 || x + 2 <= y
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 12 SDslu, 71 SDs, 0 SdLazy, 64 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 25 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1670 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...