/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=0.8 --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/test06.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 07:49:12,703 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 07:49:12,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 07:49:12,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 07:49:12,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 07:49:12,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 07:49:12,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 07:49:12,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 07:49:12,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 07:49:12,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 07:49:12,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 07:49:12,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 07:49:12,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 07:49:12,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 07:49:12,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 07:49:12,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 07:49:12,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 07:49:12,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 07:49:12,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 07:49:12,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 07:49:12,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 07:49:12,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 07:49:12,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 07:49:12,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 07:49:12,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 07:49:12,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 07:49:12,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 07:49:12,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 07:49:12,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 07:49:12,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 07:49:12,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 07:49:12,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 07:49:12,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 07:49:12,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 07:49:12,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 07:49:12,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 07:49:12,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 07:49:12,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 07:49:12,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 07:49:12,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 07:49:12,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 07:49:12,773 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 07:49:12,800 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 07:49:12,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 07:49:12,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 07:49:12,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 07:49:12,802 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 07:49:12,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 07:49:12,803 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 07:49:12,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 07:49:12,803 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 07:49:12,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 07:49:12,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 07:49:12,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 07:49:12,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 07:49:12,804 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 07:49:12,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 07:49:12,805 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 07:49:12,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 07:49:12,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 07:49:12,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 07:49:12,805 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 07:49:12,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 07:49:12,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 07:49:12,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 07:49:12,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 07:49:12,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 07:49:12,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 07:49:12,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 07:49:12,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 07:49:12,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 07:49:12,808 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true;
[2020-09-25 07:49:13,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 07:49:13,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 07:49:13,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 07:49:13,294 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 07:49:13,296 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 07:49:13,297 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test06.c
[2020-09-25 07:49:13,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28142f1e7/d20968a9da2f439cb96ed990d20cbb45/FLAGa8b6ad34a
[2020-09-25 07:49:13,916 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 07:49:13,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test06.c
[2020-09-25 07:49:13,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28142f1e7/d20968a9da2f439cb96ed990d20cbb45/FLAGa8b6ad34a
[2020-09-25 07:49:14,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28142f1e7/d20968a9da2f439cb96ed990d20cbb45
[2020-09-25 07:49:14,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 07:49:14,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 07:49:14,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 07:49:14,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 07:49:14,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 07:49:14,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:49:14" (1/1) ...
[2020-09-25 07:49:14,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a8d835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:14, skipping insertion in model container
[2020-09-25 07:49:14,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:49:14" (1/1) ...
[2020-09-25 07:49:14,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 07:49:14,318 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 07:49:14,533 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 07:49:14,547 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 07:49:14,565 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 07:49:14,584 INFO L208 MainTranslator]: Completed translation
[2020-09-25 07:49:14,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:14 WrapperNode
[2020-09-25 07:49:14,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 07:49:14,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 07:49:14,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 07:49:14,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 07:49:14,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:14" (1/1) ...
[2020-09-25 07:49:14,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:14" (1/1) ...
[2020-09-25 07:49:14,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:14" (1/1) ...
[2020-09-25 07:49:14,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:14" (1/1) ...
[2020-09-25 07:49:14,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:14" (1/1) ...
[2020-09-25 07:49:14,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:14" (1/1) ...
[2020-09-25 07:49:14,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:14" (1/1) ...
[2020-09-25 07:49:14,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 07:49:14,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 07:49:14,714 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 07:49:14,714 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 07:49:14,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:14" (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 07:49:14,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 07:49:14,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 07:49:14,798 INFO L138 BoogieDeclarations]: Found implementation of procedure g
[2020-09-25 07:49:14,798 INFO L138 BoogieDeclarations]: Found implementation of procedure f
[2020-09-25 07:49:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 07:49:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 07:49:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure g
[2020-09-25 07:49:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-25 07:49:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-25 07:49:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 07:49:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure f
[2020-09-25 07:49:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 07:49:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 07:49:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 07:49:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 07:49:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 07:49:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 07:49:15,203 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 07:49:15,204 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 07:49:15,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:49:15 BoogieIcfgContainer
[2020-09-25 07:49:15,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 07:49:15,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 07:49:15,213 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 07:49:15,216 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 07:49:15,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:49:14" (1/3) ...
[2020-09-25 07:49:15,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd9eb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:49:15, skipping insertion in model container
[2020-09-25 07:49:15,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:14" (2/3) ...
[2020-09-25 07:49:15,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd9eb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:49:15, skipping insertion in model container
[2020-09-25 07:49:15,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:49:15" (3/3) ...
[2020-09-25 07:49:15,220 INFO L109 eAbstractionObserver]: Analyzing ICFG test06.c
[2020-09-25 07:49:15,232 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 07:49:15,242 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 07:49:15,264 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 07:49:15,295 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 07:49:15,295 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 07:49:15,295 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 07:49:15,295 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 07:49:15,295 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 07:49:15,295 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 07:49:15,295 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 07:49:15,296 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 07:49:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states.
[2020-09-25 07:49:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-09-25 07:49:15,331 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:49:15,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 07:49:15,332 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:49:15,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:49:15,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1600319067, now seen corresponding path program 1 times
[2020-09-25 07:49:15,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:49:15,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754972269]
[2020-09-25 07:49:15,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:49:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:49:15,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:49:16,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:49:16,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48
[2020-09-25 07:49:16,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:49:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753
[2020-09-25 07:49:16,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:49:16,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:49:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 07:49:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-09-25 07:49:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-09-25 07:49:16,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 07:49:16,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 07:49:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:49:16,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:49:16,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:49:16,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 07:49:16,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:49:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 07:49:16,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:49:16,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:49:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 07:49:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:49:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 07:49:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:49:16,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-25 07:49:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:49:16,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:49:16,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:49:16,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 07:49:16,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:49:16,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51
[2020-09-25 07:49:16,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:49:16,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:49:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 07:49:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-25 07:49:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 07:49:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:49:16,697 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 07:49:16,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754972269]
[2020-09-25 07:49:16,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 07:49:16,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-09-25 07:49:16,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99390477]
[2020-09-25 07:49:16,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 07:49:16,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 07:49:16,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 07:49:16,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2020-09-25 07:49:16,726 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 11 states.
[2020-09-25 07:49:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 07:49:17,279 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions.
[2020-09-25 07:49:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-09-25 07:49:17,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39
[2020-09-25 07:49:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 07:49:17,295 INFO L225 Difference]: With dead ends: 105
[2020-09-25 07:49:17,295 INFO L226 Difference]: Without dead ends: 52
[2020-09-25 07:49:17,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380
[2020-09-25 07:49:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2020-09-25 07:49:17,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2020-09-25 07:49:17,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2020-09-25 07:49:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 51 transitions.
[2020-09-25 07:49:17,358 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 51 transitions. Word has length 39
[2020-09-25 07:49:17,358 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 07:49:17,359 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 51 transitions.
[2020-09-25 07:49:17,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 07:49:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 51 transitions.
[2020-09-25 07:49:17,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2020-09-25 07:49:17,361 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:49:17,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 07:49:17,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 07:49:17,362 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:49:17,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:49:17,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2059010026, now seen corresponding path program 1 times
[2020-09-25 07:49:17,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:49:17,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862459175]
[2020-09-25 07:49:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:49:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 07:49:17,415 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 07:49:17,415 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 07:49:17,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 07:49:17,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:49:17 BoogieIcfgContainer
[2020-09-25 07:49:17,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 07:49:17,450 INFO L168 Benchmark]: Toolchain (without parser) took 3179.97 ms. Allocated memory was 143.7 MB in the beginning and 227.5 MB in the end (delta: 83.9 MB). Free memory was 100.3 MB in the beginning and 113.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB.
[2020-09-25 07:49:17,451 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.7 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 07:49:17,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.21 ms. Allocated memory is still 143.7 MB. Free memory was 99.6 MB in the beginning and 89.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
[2020-09-25 07:49:17,453 INFO L168 Benchmark]: Boogie Preprocessor took 125.75 ms. Allocated memory was 143.7 MB in the beginning and 199.8 MB in the end (delta: 56.1 MB). Free memory was 89.8 MB in the beginning and 177.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
[2020-09-25 07:49:17,454 INFO L168 Benchmark]: RCFGBuilder took 497.24 ms. Allocated memory is still 199.8 MB. Free memory was 177.6 MB in the beginning and 154.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB.
[2020-09-25 07:49:17,455 INFO L168 Benchmark]: TraceAbstraction took 2234.37 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 154.0 MB in the beginning and 113.1 MB in the end (delta: 40.8 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB.
[2020-09-25 07:49:17,459 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.20 ms. Allocated memory is still 143.7 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 313.21 ms. Allocated memory is still 143.7 MB. Free memory was 99.6 MB in the beginning and 89.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 125.75 ms. Allocated memory was 143.7 MB in the beginning and 199.8 MB in the end (delta: 56.1 MB). Free memory was 89.8 MB in the beginning and 177.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 497.24 ms. Allocated memory is still 199.8 MB. Free memory was 177.6 MB in the beginning and 154.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2234.37 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 154.0 MB in the beginning and 113.1 MB in the end (delta: 40.8 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 40]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L21] int a, b;
[L22] int *p1, *p2;
[L24] p1 = &a
[L25] p2 = &b
[L27] b = 1
[L28] a = 5
[L30] EXPR \read(a)
[L30] a--
[L32] EXPR \read(a)
[L32] CALL, EXPR f(a, &p1, &p2)
[L12] COND TRUE a == 4
[L13] CALL g(p1, p2)
[L5] EXPR \read(**p2)
[L5] int *pq = *p2;
[L7] EXPR \read(**p2)
[L7] *p1 = *p2
[L8] *pq = 0
[L13] RET g(p1, p2)
[L14] return 1;
[L32] RET, EXPR f(a, &p1, &p2)
[L32] a = f(a, &p1, &p2)
[L34] EXPR \read(*p1)
[L34] COND TRUE *p1 == 0
[L40] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 52 SDslu, 262 SDs, 0 SdLazy, 287 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 5244 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...