/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_infinite_loop_1.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 03:26:32,728 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 03:26:32,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 03:26:32,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 03:26:32,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 03:26:32,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 03:26:32,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 03:26:32,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 03:26:32,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 03:26:32,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 03:26:32,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 03:26:32,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 03:26:32,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 03:26:32,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 03:26:32,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 03:26:32,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 03:26:32,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 03:26:32,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 03:26:32,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 03:26:32,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 03:26:32,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 03:26:32,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 03:26:32,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 03:26:32,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 03:26:32,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 03:26:32,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 03:26:32,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 03:26:32,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 03:26:32,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 03:26:32,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 03:26:32,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 03:26:32,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 03:26:32,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 03:26:32,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 03:26:32,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 03:26:32,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 03:26:32,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 03:26:32,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 03:26:32,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 03:26:32,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 03:26:32,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 03:26:32,860 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 03:26:32,888 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 03:26:32,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 03:26:32,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 03:26:32,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 03:26:32,893 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 03:26:32,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 03:26:32,894 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 03:26:32,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 03:26:32,896 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 03:26:32,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 03:26:32,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 03:26:32,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 03:26:32,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 03:26:32,897 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 03:26:32,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 03:26:32,897 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 03:26:32,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 03:26:32,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 03:26:32,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 03:26:32,898 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 03:26:32,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 03:26:32,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 03:26:32,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 03:26:32,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 03:26:32,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 03:26:32,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 03:26:32,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 03:26:32,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 03:26:32,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 03:26:32,901 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true;
[2020-09-25 03:26:33,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 03:26:33,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 03:26:33,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 03:26:33,373 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 03:26:33,374 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 03:26:33,375 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_infinite_loop_1.c
[2020-09-25 03:26:33,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a3130740/a4ae482f5a9b472e9b27d62a9b91fa18/FLAG017786d41
[2020-09-25 03:26:34,007 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 03:26:34,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/for_infinite_loop_1.c
[2020-09-25 03:26:34,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a3130740/a4ae482f5a9b472e9b27d62a9b91fa18/FLAG017786d41
[2020-09-25 03:26:34,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a3130740/a4ae482f5a9b472e9b27d62a9b91fa18
[2020-09-25 03:26:34,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 03:26:34,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 03:26:34,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 03:26:34,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 03:26:34,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 03:26:34,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:26:34" (1/1) ...
[2020-09-25 03:26:34,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a765448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:34, skipping insertion in model container
[2020-09-25 03:26:34,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:26:34" (1/1) ...
[2020-09-25 03:26:34,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 03:26:34,419 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 03:26:34,623 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 03:26:34,629 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 03:26:34,649 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 03:26:34,668 INFO L208 MainTranslator]: Completed translation
[2020-09-25 03:26:34,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:34 WrapperNode
[2020-09-25 03:26:34,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 03:26:34,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 03:26:34,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 03:26:34,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 03:26:34,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:34" (1/1) ...
[2020-09-25 03:26:34,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:34" (1/1) ...
[2020-09-25 03:26:34,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:34" (1/1) ...
[2020-09-25 03:26:34,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:34" (1/1) ...
[2020-09-25 03:26:34,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:34" (1/1) ...
[2020-09-25 03:26:34,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:34" (1/1) ...
[2020-09-25 03:26:34,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:34" (1/1) ...
[2020-09-25 03:26:34,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 03:26:34,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 03:26:34,788 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 03:26:34,788 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 03:26:34,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:34" (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 03:26:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 03:26:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 03:26:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-25 03:26:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 03:26:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 03:26:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 03:26:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 03:26:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-25 03:26:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 03:26:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 03:26:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 03:26:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 03:26:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 03:26:35,123 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 03:26:35,124 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 03:26:35,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:26:35 BoogieIcfgContainer
[2020-09-25 03:26:35,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 03:26:35,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 03:26:35,144 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 03:26:35,156 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 03:26:35,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:26:34" (1/3) ...
[2020-09-25 03:26:35,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a1f42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:26:35, skipping insertion in model container
[2020-09-25 03:26:35,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:26:34" (2/3) ...
[2020-09-25 03:26:35,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a1f42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:26:35, skipping insertion in model container
[2020-09-25 03:26:35,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:26:35" (3/3) ...
[2020-09-25 03:26:35,167 INFO L109 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_1.c
[2020-09-25 03:26:35,192 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 03:26:35,203 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 03:26:35,223 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 03:26:35,252 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 03:26:35,252 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 03:26:35,252 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 03:26:35,252 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 03:26:35,252 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 03:26:35,253 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 03:26:35,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 03:26:35,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 03:26:35,274 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states.
[2020-09-25 03:26:35,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-09-25 03:26:35,281 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 03:26:35,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 03:26:35,283 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:26:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:26:35,289 INFO L82 PathProgramCache]: Analyzing trace with hash 390901091, now seen corresponding path program 1 times
[2020-09-25 03:26:35,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:26:35,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193613314]
[2020-09-25 03:26:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:26:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:26:35,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:26:35,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:26:35,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26
[2020-09-25 03:26:35,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:26:35,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144
[2020-09-25 03:26:35,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:26:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 03:26:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 03:26:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-09-25 03:26:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-25 03:26:35,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:26:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:26:35,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:26:35,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:26:35,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 03:26:35,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:26:35,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 03:26:35,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:26:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:26:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:26:35,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:26:35,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:26:35,695 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 03:26:35,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193613314]
[2020-09-25 03:26:35,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:26:35,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 03:26:35,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633156976]
[2020-09-25 03:26:35,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 03:26:35,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:26:35,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 03:26:35,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 03:26:35,725 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states.
[2020-09-25 03:26:35,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:26:35,804 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions.
[2020-09-25 03:26:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-09-25 03:26:35,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17
[2020-09-25 03:26:35,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:26:35,818 INFO L225 Difference]: With dead ends: 42
[2020-09-25 03:26:35,819 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 03:26:35,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 03:26:35,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 03:26:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 03:26:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 03:26:35,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 03:26:35,856 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17
[2020-09-25 03:26:35,857 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:26:35,857 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 03:26:35,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 03:26:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 03:26:35,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 03:26:35,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 03:26:35,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 03:26:35,925 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 03:26:35,925 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 03:26:35,925 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 03:26:35,926 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 03:26:35,926 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 03:26:35,926 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 03:26:35,926 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed.
[2020-09-25 03:26:35,927 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed.
[2020-09-25 03:26:35,927 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed.
[2020-09-25 03:26:35,927 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed.
[2020-09-25 03:26:35,927 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed.
[2020-09-25 03:26:35,927 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 26) no Hoare annotation was computed.
[2020-09-25 03:26:35,928 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (= main_~x~0 0)
[2020-09-25 03:26:35,928 INFO L268 CegarLoopResult]: For program point L23-1(lines 21 24) no Hoare annotation was computed.
[2020-09-25 03:26:35,928 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed.
[2020-09-25 03:26:35,928 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed.
[2020-09-25 03:26:35,928 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed.
[2020-09-25 03:26:35,929 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed.
[2020-09-25 03:26:35,929 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed.
[2020-09-25 03:26:35,929 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed.
[2020-09-25 03:26:35,929 INFO L264 CegarLoopResult]: At program point L21-5(lines 21 24) the Hoare annotation is: (= main_~x~0 0)
[2020-09-25 03:26:35,929 INFO L264 CegarLoopResult]: At program point L21-6(lines 21 24) the Hoare annotation is: false
[2020-09-25 03:26:35,930 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 26) no Hoare annotation was computed.
[2020-09-25 03:26:35,930 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 26) the Hoare annotation is: true
[2020-09-25 03:26:35,930 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed.
[2020-09-25 03:26:35,930 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed.
[2020-09-25 03:26:35,931 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed.
[2020-09-25 03:26:35,931 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed.
[2020-09-25 03:26:35,931 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true
[2020-09-25 03:26:35,931 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 12) no Hoare annotation was computed.
[2020-09-25 03:26:35,931 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed.
[2020-09-25 03:26:35,932 INFO L268 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed.
[2020-09-25 03:26:35,932 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 12) no Hoare annotation was computed.
[2020-09-25 03:26:35,932 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed.
[2020-09-25 03:26:35,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:26:35 BoogieIcfgContainer
[2020-09-25 03:26:35,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 03:26:35,954 INFO L168 Benchmark]: Toolchain (without parser) took 1586.91 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 104.3 MB in the beginning and 134.7 MB in the end (delta: -30.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB.
[2020-09-25 03:26:35,955 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-09-25 03:26:35,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.31 ms. Allocated memory is still 141.0 MB. Free memory was 103.7 MB in the beginning and 94.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
[2020-09-25 03:26:35,957 INFO L168 Benchmark]: Boogie Preprocessor took 117.93 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 94.3 MB in the beginning and 183.5 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB.
[2020-09-25 03:26:35,958 INFO L168 Benchmark]: RCFGBuilder took 342.89 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 170.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
[2020-09-25 03:26:35,959 INFO L168 Benchmark]: TraceAbstraction took 807.03 ms. Allocated memory is still 204.5 MB. Free memory was 170.0 MB in the beginning and 134.7 MB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB.
[2020-09-25 03:26:35,964 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 297.31 ms. Allocated memory is still 141.0 MB. Free memory was 103.7 MB in the beginning and 94.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 117.93 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 94.3 MB in the beginning and 183.5 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 342.89 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 170.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 807.03 ms. Allocated memory is still 204.5 MB. Free memory was 170.0 MB in the beginning and 134.7 MB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 9]: 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: 21]: Loop Invariant
Derived loop invariant: x == 0
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 11 SDslu, 52 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 608 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...