/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_4.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 13:39:23,210 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 13:39:23,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 13:39:23,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 13:39:23,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 13:39:23,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 13:39:23,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 13:39:23,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 13:39:23,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 13:39:23,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 13:39:23,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 13:39:23,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 13:39:23,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 13:39:23,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 13:39:23,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 13:39:23,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 13:39:23,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 13:39:23,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 13:39:23,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 13:39:23,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 13:39:23,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 13:39:23,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 13:39:23,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 13:39:23,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 13:39:23,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 13:39:23,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 13:39:23,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 13:39:23,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 13:39:23,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 13:39:23,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 13:39:23,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 13:39:23,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 13:39:23,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 13:39:23,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 13:39:23,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 13:39:23,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 13:39:23,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 13:39:23,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 13:39:23,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 13:39:23,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 13:39:23,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 13:39:23,335 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
[2020-09-25 13:39:23,379 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 13:39:23,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 13:39:23,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 13:39:23,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 13:39:23,382 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 13:39:23,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 13:39:23,383 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 13:39:23,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 13:39:23,383 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 13:39:23,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 13:39:23,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 13:39:23,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 13:39:23,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 13:39:23,386 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 13:39:23,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 13:39:23,386 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 13:39:23,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 13:39:23,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 13:39:23,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 13:39:23,387 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 13:39:23,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 13:39:23,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 13:39:23,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 13:39:23,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 13:39:23,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 13:39:23,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 13:39:23,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 13:39:23,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 13:39:23,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 13:39:23,389 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true;
[2020-09-25 13:39:23,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 13:39:23,866 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 13:39:23,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 13:39:23,872 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 13:39:23,873 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 13:39:23,874 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_4.c
[2020-09-25 13:39:23,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9c6648c5/7d84cce9c4e94fe18975136a3683319b/FLAGf8a5ce303
[2020-09-25 13:39:24,549 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 13:39:24,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/while_infinite_loop_4.c
[2020-09-25 13:39:24,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9c6648c5/7d84cce9c4e94fe18975136a3683319b/FLAGf8a5ce303
[2020-09-25 13:39:24,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9c6648c5/7d84cce9c4e94fe18975136a3683319b
[2020-09-25 13:39:24,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 13:39:24,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 13:39:24,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 13:39:24,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 13:39:24,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 13:39:24,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:24" (1/1) ...
[2020-09-25 13:39:24,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2234316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:24, skipping insertion in model container
[2020-09-25 13:39:24,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:24" (1/1) ...
[2020-09-25 13:39:24,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 13:39:24,960 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 13:39:25,239 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 13:39:25,248 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 13:39:25,266 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 13:39:25,286 INFO L208 MainTranslator]: Completed translation
[2020-09-25 13:39:25,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:25 WrapperNode
[2020-09-25 13:39:25,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 13:39:25,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 13:39:25,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 13:39:25,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 13:39:25,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:25" (1/1) ...
[2020-09-25 13:39:25,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:25" (1/1) ...
[2020-09-25 13:39:25,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:25" (1/1) ...
[2020-09-25 13:39:25,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:25" (1/1) ...
[2020-09-25 13:39:25,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:25" (1/1) ...
[2020-09-25 13:39:25,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:25" (1/1) ...
[2020-09-25 13:39:25,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:25" (1/1) ...
[2020-09-25 13:39:25,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 13:39:25,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 13:39:25,407 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 13:39:25,407 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 13:39:25,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:25" (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
[2020-09-25 13:39:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 13:39:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 13:39:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 13:39:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure eval
[2020-09-25 13:39:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 13:39:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 13:39:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 13:39:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure eval
[2020-09-25 13:39:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 13:39:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 13:39:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 13:39:25,664 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 13:39:25,665 INFO L295 CfgBuilder]: Removed 2 assume(true) statements.
[2020-09-25 13:39:25,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:25 BoogieIcfgContainer
[2020-09-25 13:39:25,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 13:39:25,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 13:39:25,671 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 13:39:25,675 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 13:39:25,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:39:24" (1/3) ...
[2020-09-25 13:39:25,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16663208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:25, skipping insertion in model container
[2020-09-25 13:39:25,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:25" (2/3) ...
[2020-09-25 13:39:25,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16663208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:25, skipping insertion in model container
[2020-09-25 13:39:25,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:25" (3/3) ...
[2020-09-25 13:39:25,680 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c
[2020-09-25 13:39:25,692 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 13:39:25,702 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 13:39:25,737 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 13:39:25,775 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 13:39:25,775 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 13:39:25,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 13:39:25,775 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 13:39:25,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 13:39:25,776 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 13:39:25,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 13:39:25,776 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 13:39:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states.
[2020-09-25 13:39:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-09-25 13:39:25,815 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 13:39:25,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 13:39:25,817 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:39:25,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:39:25,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1063393928, now seen corresponding path program 1 times
[2020-09-25 13:39:25,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:39:25,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414216702]
[2020-09-25 13:39:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:39:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:39:25,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:39:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:39:26,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:39:26,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-09-25 13:39:26,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 13:39:26,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121
[2020-09-25 13:39:26,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:39:26,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:39:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 13:39:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6
[2020-09-25 13:39:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-25 13:39:26,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-25 13:39:26,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:39:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:39:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:39:26,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:39:26,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-25 13:39:26,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:39:26,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-25 13:39:26,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:39:26,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:39:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:39:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:39:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-09-25 13:39:26,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:39:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 13:39:26,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414216702]
[2020-09-25 13:39:26,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 13:39:26,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 13:39:26,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314612806]
[2020-09-25 13:39:26,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 13:39:26,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:39:26,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 13:39:26,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 13:39:26,333 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states.
[2020-09-25 13:39:26,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:39:26,464 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions.
[2020-09-25 13:39:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 13:39:26,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10
[2020-09-25 13:39:26,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:39:26,481 INFO L225 Difference]: With dead ends: 41
[2020-09-25 13:39:26,481 INFO L226 Difference]: Without dead ends: 22
[2020-09-25 13:39:26,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-25 13:39:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2020-09-25 13:39:26,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18.
[2020-09-25 13:39:26,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2020-09-25 13:39:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions.
[2020-09-25 13:39:26,538 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10
[2020-09-25 13:39:26,538 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:39:26,539 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions.
[2020-09-25 13:39:26,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 13:39:26,539 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions.
[2020-09-25 13:39:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-09-25 13:39:26,540 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 13:39:26,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 13:39:26,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 13:39:26,541 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:39:26,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:39:26,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1652124924, now seen corresponding path program 1 times
[2020-09-25 13:39:26,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:39:26,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054401564]
[2020-09-25 13:39:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:39:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 13:39:26,555 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 13:39:26,556 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 13:39:26,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 13:39:26,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:39:26 BoogieIcfgContainer
[2020-09-25 13:39:26,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 13:39:26,584 INFO L168 Benchmark]: Toolchain (without parser) took 1674.00 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 133.3 MB in the end (delta: -30.9 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB.
[2020-09-25 13:39:26,585 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 13:39:26,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.44 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
[2020-09-25 13:39:26,587 INFO L168 Benchmark]: Boogie Preprocessor took 118.78 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 182.9 MB in the end (delta: -90.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
[2020-09-25 13:39:26,588 INFO L168 Benchmark]: RCFGBuilder took 262.71 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 171.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB.
[2020-09-25 13:39:26,589 INFO L168 Benchmark]: TraceAbstraction took 909.50 ms. Allocated memory is still 202.9 MB. Free memory was 170.5 MB in the beginning and 133.3 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB.
[2020-09-25 13:39:26,594 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 373.44 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 118.78 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 182.9 MB in the end (delta: -90.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 262.71 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 171.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 909.50 ms. Allocated memory is still 202.9 MB. Free memory was 170.5 MB in the beginning and 133.3 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L10] int x=0;
[L24] COND TRUE 1
[L26] CALL eval()
[L14] COND TRUE 1
[L15] x=1
[L26] RET eval()
[L27] CALL __VERIFIER_assert(x==0)
[L4] COND TRUE !(cond)
[L5] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 11 SDslu, 39 SDs, 0 SdLazy, 21 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 1 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be incorrect!
Received shutdown request...