/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=WIDESTAMONGSMALL --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/ldv-regression/test13.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 05:31:41,458 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 05:31:41,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 05:31:41,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 05:31:41,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 05:31:41,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 05:31:41,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 05:31:41,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 05:31:41,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 05:31:41,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 05:31:41,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 05:31:41,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 05:31:41,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 05:31:41,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 05:31:41,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 05:31:41,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 05:31:41,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 05:31:41,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 05:31:41,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 05:31:41,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 05:31:41,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 05:31:41,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 05:31:41,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 05:31:41,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 05:31:41,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 05:31:41,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 05:31:41,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 05:31:41,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 05:31:41,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 05:31:41,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 05:31:41,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 05:31:41,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 05:31:41,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 05:31:41,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 05:31:41,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 05:31:41,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 05:31:41,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 05:31:41,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 05:31:41,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 05:31:41,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 05:31:41,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 05:31:41,531 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 05:31:41,569 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 05:31:41,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 05:31:41,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 05:31:41,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 05:31:41,577 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 05:31:41,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 05:31:41,579 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 05:31:41,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 05:31:41,579 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 05:31:41,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 05:31:41,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 05:31:41,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 05:31:41,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 05:31:41,580 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 05:31:41,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 05:31:41,581 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 05:31:41,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 05:31:41,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 05:31:41,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 05:31:41,582 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 05:31:41,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 05:31:41,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 05:31:41,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 05:31:41,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 05:31:41,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 05:31:41,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 05:31:41,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 05:31:41,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 05:31:41,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 05:31:41,585 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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;
[2020-09-25 05:31:42,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 05:31:42,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 05:31:42,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 05:31:42,117 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 05:31:42,118 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 05:31:42,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test13.c
[2020-09-25 05:31:42,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9536776a/590642f66f30462ca370230c5a5ef22c/FLAG26f98e19d
[2020-09-25 05:31:42,740 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 05:31:42,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test13.c
[2020-09-25 05:31:42,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9536776a/590642f66f30462ca370230c5a5ef22c/FLAG26f98e19d
[2020-09-25 05:31:43,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9536776a/590642f66f30462ca370230c5a5ef22c
[2020-09-25 05:31:43,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 05:31:43,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 05:31:43,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 05:31:43,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 05:31:43,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 05:31:43,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:43" (1/1) ...
[2020-09-25 05:31:43,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7ae4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:43, skipping insertion in model container
[2020-09-25 05:31:43,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:43" (1/1) ...
[2020-09-25 05:31:43,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 05:31:43,165 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 05:31:43,393 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 05:31:43,407 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 05:31:43,430 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 05:31:43,472 INFO L208 MainTranslator]: Completed translation
[2020-09-25 05:31:43,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:43 WrapperNode
[2020-09-25 05:31:43,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 05:31:43,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 05:31:43,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 05:31:43,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 05:31:43,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:43" (1/1) ...
[2020-09-25 05:31:43,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:43" (1/1) ...
[2020-09-25 05:31:43,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:43" (1/1) ...
[2020-09-25 05:31:43,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:43" (1/1) ...
[2020-09-25 05:31:43,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:43" (1/1) ...
[2020-09-25 05:31:43,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:43" (1/1) ...
[2020-09-25 05:31:43,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:43" (1/1) ...
[2020-09-25 05:31:43,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 05:31:43,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 05:31:43,630 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 05:31:43,630 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 05:31:43,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:43" (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 05:31:43,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 05:31:43,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 05:31:43,726 INFO L138 BoogieDeclarations]: Found implementation of procedure check
[2020-09-25 05:31:43,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 05:31:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 05:31:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure check
[2020-09-25 05:31:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 05:31:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 05:31:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 05:31:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-25 05:31:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 05:31:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 05:31:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 05:31:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 05:31:44,064 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 05:31:44,065 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 05:31:44,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:44 BoogieIcfgContainer
[2020-09-25 05:31:44,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 05:31:44,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 05:31:44,072 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 05:31:44,076 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 05:31:44,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:31:43" (1/3) ...
[2020-09-25 05:31:44,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313dc784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:31:44, skipping insertion in model container
[2020-09-25 05:31:44,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:43" (2/3) ...
[2020-09-25 05:31:44,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313dc784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:31:44, skipping insertion in model container
[2020-09-25 05:31:44,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:44" (3/3) ...
[2020-09-25 05:31:44,081 INFO L109 eAbstractionObserver]: Analyzing ICFG test13.c
[2020-09-25 05:31:44,098 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 05:31:44,118 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 05:31:44,138 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 05:31:44,166 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 05:31:44,166 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 05:31:44,166 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 05:31:44,166 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 05:31:44,166 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 05:31:44,167 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 05:31:44,167 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 05:31:44,167 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 05:31:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states.
[2020-09-25 05:31:44,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-09-25 05:31:44,195 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:31:44,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 05:31:44,197 INFO L427 AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:31:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:31:44,204 INFO L82 PathProgramCache]: Analyzing trace with hash 437013475, now seen corresponding path program 1 times
[2020-09-25 05:31:44,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:31:44,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025855273]
[2020-09-25 05:31:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:31:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:31:44,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:31:44,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:31:44,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-25 05:31:44,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:31:44,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351
[2020-09-25 05:31:44,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:31:44,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:31:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 05:31:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-25 05:31:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-09-25 05:31:44,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 05:31:44,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:31:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:31:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:31:45,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:31:45,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-09-25 05:31:45,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:31:45,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71
[2020-09-25 05:31:45,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:31:45,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:31:45,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 05:31:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:31:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 05:31:45,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 05:31:45,034 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 05:31:45,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025855273]
[2020-09-25 05:31:45,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 05:31:45,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-25 05:31:45,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806262223]
[2020-09-25 05:31:45,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 05:31:45,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:31:45,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 05:31:45,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-25 05:31:45,070 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states.
[2020-09-25 05:31:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:31:45,450 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions.
[2020-09-25 05:31:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-09-25 05:31:45,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18
[2020-09-25 05:31:45,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:31:45,465 INFO L225 Difference]: With dead ends: 33
[2020-09-25 05:31:45,465 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 05:31:45,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2020-09-25 05:31:45,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 05:31:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 05:31:45,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 05:31:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 05:31:45,502 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18
[2020-09-25 05:31:45,502 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:31:45,502 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 05:31:45,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 05:31:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 05:31:45,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 05:31:45,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 05:31:45,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 05:31:45,683 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed.
[2020-09-25 05:31:45,683 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-09-25 05:31:45,683 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed.
[2020-09-25 05:31:45,684 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed.
[2020-09-25 05:31:45,684 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 05:31:45,684 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed.
[2020-09-25 05:31:45,684 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed.
[2020-09-25 05:31:45,684 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed.
[2020-09-25 05:31:45,684 INFO L268 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed.
[2020-09-25 05:31:45,685 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~pa~0.base |old(~pa~0.base)|) (= ~pb~0.base |old(~pb~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|))
[2020-09-25 05:31:45,685 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 05:31:45,685 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 05:31:45,687 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))
[2020-09-25 05:31:45,687 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 05:31:45,688 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 05:31:45,688 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 20) the Hoare annotation is: true
[2020-09-25 05:31:45,689 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 20) no Hoare annotation was computed.
[2020-09-25 05:31:45,689 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 20) no Hoare annotation was computed.
[2020-09-25 05:31:45,689 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed.
[2020-09-25 05:31:45,689 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 4 12) the Hoare annotation is: true
[2020-09-25 05:31:45,690 INFO L268 CegarLoopResult]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed.
[2020-09-25 05:31:45,691 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 4 12) no Hoare annotation was computed.
[2020-09-25 05:31:45,691 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (not (= |~#a~0.offset| ~pa~0.offset)) (not (= |~#a~0.base| ~pa~0.base)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|)))
[2020-09-25 05:31:45,692 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed.
[2020-09-25 05:31:45,695 INFO L268 CegarLoopResult]: For program point L4(lines 4 12) no Hoare annotation was computed.
[2020-09-25 05:31:45,695 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 4 12) no Hoare annotation was computed.
[2020-09-25 05:31:45,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:31:45 BoogieIcfgContainer
[2020-09-25 05:31:45,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 05:31:45,729 INFO L168 Benchmark]: Toolchain (without parser) took 2614.36 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 102.0 MB in the beginning and 178.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB.
[2020-09-25 05:31:45,733 INFO L168 Benchmark]: CDTParser took 0.22 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 05:31:45,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.74 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
[2020-09-25 05:31:45,737 INFO L168 Benchmark]: Boogie Preprocessor took 154.61 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.8 MB in the beginning and 180.9 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
[2020-09-25 05:31:45,738 INFO L168 Benchmark]: RCFGBuilder took 440.84 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 166.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB.
[2020-09-25 05:31:45,741 INFO L168 Benchmark]: TraceAbstraction took 1653.19 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 166.5 MB in the beginning and 178.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB.
[2020-09-25 05:31:45,752 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22 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 355.74 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 154.61 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.8 MB in the beginning and 180.9 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 440.84 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 166.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1653.19 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 166.5 MB in the beginning and 178.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 10]: 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: 4]: Loop Invariant
Derived loop invariant: ((!(a == pa) || !(a == pa)) || !(b == a)) || !(a == b)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 22 SDslu, 52 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 64 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 116 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1717 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 correct!
Received shutdown request...