/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=LOWLEXORDER --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/volatile_alias.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 21:37:50,777 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 21:37:50,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 21:37:50,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 21:37:50,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 21:37:50,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 21:37:50,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 21:37:50,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 21:37:50,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 21:37:50,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 21:37:50,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 21:37:50,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 21:37:50,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 21:37:50,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 21:37:50,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 21:37:50,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 21:37:50,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 21:37:50,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 21:37:50,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 21:37:50,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 21:37:50,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 21:37:50,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 21:37:50,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 21:37:50,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 21:37:50,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 21:37:50,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 21:37:50,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 21:37:50,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 21:37:50,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 21:37:50,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 21:37:50,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 21:37:50,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 21:37:50,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 21:37:50,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 21:37:50,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 21:37:50,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 21:37:50,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 21:37:50,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 21:37:50,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 21:37:50,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 21:37:50,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 21:37:50,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 21:37:50,942 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 21:37:50,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 21:37:50,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 21:37:50,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 21:37:50,945 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 21:37:50,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 21:37:50,946 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 21:37:50,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 21:37:50,946 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 21:37:50,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 21:37:50,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 21:37:50,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 21:37:50,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 21:37:50,948 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 21:37:50,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 21:37:50,949 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 21:37:50,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 21:37:50,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 21:37:50,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 21:37:50,950 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 21:37:50,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 21:37:50,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:37:50,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 21:37:50,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 21:37:50,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 21:37:50,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 21:37:50,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 21:37:50,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 21:37:50,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 21:37:50,952 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true;
[2020-09-24 21:37:51,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 21:37:51,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 21:37:51,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 21:37:51,512 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 21:37:51,512 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 21:37:51,513 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.i
[2020-09-24 21:37:51,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41292cb95/052f476751dc478ea553a6fc287aa2d3/FLAG1e5b21918
[2020-09-24 21:37:52,167 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 21:37:52,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/volatile_alias.i
[2020-09-24 21:37:52,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41292cb95/052f476751dc478ea553a6fc287aa2d3/FLAG1e5b21918
[2020-09-24 21:37:52,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41292cb95/052f476751dc478ea553a6fc287aa2d3
[2020-09-24 21:37:52,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 21:37:52,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 21:37:52,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 21:37:52,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 21:37:52,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 21:37:52,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:37:52" (1/1) ...
[2020-09-24 21:37:52,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9ee73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:52, skipping insertion in model container
[2020-09-24 21:37:52,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:37:52" (1/1) ...
[2020-09-24 21:37:52,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 21:37:52,590 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 21:37:52,792 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:37:52,808 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 21:37:52,828 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:37:52,848 INFO L208 MainTranslator]: Completed translation
[2020-09-24 21:37:52,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:52 WrapperNode
[2020-09-24 21:37:52,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 21:37:52,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 21:37:52,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 21:37:52,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 21:37:52,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:52" (1/1) ...
[2020-09-24 21:37:52,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:52" (1/1) ...
[2020-09-24 21:37:52,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:52" (1/1) ...
[2020-09-24 21:37:52,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:52" (1/1) ...
[2020-09-24 21:37:52,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:52" (1/1) ...
[2020-09-24 21:37:52,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:52" (1/1) ...
[2020-09-24 21:37:52,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:52" (1/1) ...
[2020-09-24 21:37:52,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 21:37:52,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 21:37:52,885 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 21:37:52,885 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 21:37:52,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:52" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:37:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 21:37:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 21:37:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 21:37:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 21:37:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 21:37:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 21:37:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-24 21:37:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 21:37:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 21:37:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 21:37:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 21:37:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 21:37:53,273 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 21:37:53,274 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 21:37:53,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:37:53 BoogieIcfgContainer
[2020-09-24 21:37:53,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 21:37:53,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 21:37:53,280 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 21:37:53,284 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 21:37:53,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:37:52" (1/3) ...
[2020-09-24 21:37:53,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d95ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:37:53, skipping insertion in model container
[2020-09-24 21:37:53,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:52" (2/3) ...
[2020-09-24 21:37:53,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d95ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:37:53, skipping insertion in model container
[2020-09-24 21:37:53,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:37:53" (3/3) ...
[2020-09-24 21:37:53,293 INFO L109 eAbstractionObserver]: Analyzing ICFG volatile_alias.i
[2020-09-24 21:37:53,302 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 21:37:53,310 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 21:37:53,332 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 21:37:53,362 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 21:37:53,362 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 21:37:53,363 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 21:37:53,363 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 21:37:53,363 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 21:37:53,363 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 21:37:53,363 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 21:37:53,363 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 21:37:53,387 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states.
[2020-09-24 21:37:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-09-24 21:37:53,396 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 21:37:53,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:37:53,398 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:37:53,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:37:53,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1049886255, now seen corresponding path program 1 times
[2020-09-24 21:37:53,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:37:53,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853918592]
[2020-09-24 21:37:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:37:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:37:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:37:53,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:37:53,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 21:37:53,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:37:53,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316
[2020-09-24 21:37:53,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:37:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 21:37:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15
[2020-09-24 21:37:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 21:37:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 21:37:54,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:37:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:37:54,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:37:54,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:37:54,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 21:37:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:37:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 21:37:54,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:37:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:37:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:37:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:37:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:37:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:37:54,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853918592]
[2020-09-24 21:37:54,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:37:54,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 21:37:54,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901698615]
[2020-09-24 21:37:54,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 21:37:54,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:37:54,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 21:37:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-09-24 21:37:54,269 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states.
[2020-09-24 21:37:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:37:54,440 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions.
[2020-09-24 21:37:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-09-24 21:37:54,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18
[2020-09-24 21:37:54,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:37:54,453 INFO L225 Difference]: With dead ends: 34
[2020-09-24 21:37:54,453 INFO L226 Difference]: Without dead ends: 0
[2020-09-24 21:37:54,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2020-09-24 21:37:54,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 21:37:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 21:37:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 21:37:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 21:37:54,493 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18
[2020-09-24 21:37:54,494 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:37:54,494 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 21:37:54,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 21:37:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 21:37:54,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 21:37:54,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 21:37:54,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 21:37:54,553 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed.
[2020-09-24 21:37:54,553 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed.
[2020-09-24 21:37:54,553 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2020-09-24 21:37:54,554 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|))
[2020-09-24 21:37:54,554 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 21:37:54,554 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 21:37:54,554 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-24 21:37:54,555 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-24 21:37:54,555 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-24 21:37:54,555 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed.
[2020-09-24 21:37:54,555 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 6 16) the Hoare annotation is: (= |old(#valid)| |#valid|)
[2020-09-24 21:37:54,555 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 6 16) no Hoare annotation was computed.
[2020-09-24 21:37:54,556 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed.
[2020-09-24 21:37:54,556 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 6 16) no Hoare annotation was computed.
[2020-09-24 21:37:54,556 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed.
[2020-09-24 21:37:54,556 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed.
[2020-09-24 21:37:54,556 INFO L268 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed.
[2020-09-24 21:37:54,556 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed.
[2020-09-24 21:37:54,556 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed.
[2020-09-24 21:37:54,557 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed.
[2020-09-24 21:37:54,557 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed.
[2020-09-24 21:37:54,557 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-24 21:37:54,557 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed.
[2020-09-24 21:37:54,557 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed.
[2020-09-24 21:37:54,557 INFO L268 CegarLoopResult]: For program point L12-5(lines 12 14) no Hoare annotation was computed.
[2020-09-24 21:37:54,558 INFO L268 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed.
[2020-09-24 21:37:54,558 INFO L268 CegarLoopResult]: For program point L8-3(line 8) no Hoare annotation was computed.
[2020-09-24 21:37:54,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:37:54 BoogieIcfgContainer
[2020-09-24 21:37:54,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 21:37:54,569 INFO L168 Benchmark]: Toolchain (without parser) took 2030.39 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 103.0 MB in the beginning and 111.8 MB in the end (delta: -8.9 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB.
[2020-09-24 21:37:54,570 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.3 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB.
[2020-09-24 21:37:54,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.98 ms. Allocated memory is still 147.3 MB. Free memory was 102.1 MB in the beginning and 93.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB.
[2020-09-24 21:37:54,572 INFO L168 Benchmark]: Boogie Preprocessor took 34.33 ms. Allocated memory is still 147.3 MB. Free memory was 93.0 MB in the beginning and 91.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB.
[2020-09-24 21:37:54,574 INFO L168 Benchmark]: RCFGBuilder took 394.27 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 91.2 MB in the beginning and 169.3 MB in the end (delta: -78.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB.
[2020-09-24 21:37:54,574 INFO L168 Benchmark]: TraceAbstraction took 1285.67 ms. Allocated memory is still 202.9 MB. Free memory was 168.3 MB in the beginning and 111.8 MB in the end (delta: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB.
[2020-09-24 21:37:54,578 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.3 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 307.98 ms. Allocated memory is still 147.3 MB. Free memory was 102.1 MB in the beginning and 93.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 34.33 ms. Allocated memory is still 147.3 MB. Free memory was 93.0 MB in the beginning and 91.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 394.27 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 91.2 MB in the beginning and 169.3 MB in the end (delta: -78.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1285.67 ms. Allocated memory is still 202.9 MB. Free memory was 168.3 MB in the beginning and 111.8 MB in the end (delta: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 13]: 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
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 10 SDslu, 52 SDs, 0 SdLazy, 52 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 15 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 7 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, 1258 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...