/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/css2003.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 06:53:48,648 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 06:53:48,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 06:53:48,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 06:53:48,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 06:53:48,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 06:53:48,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 06:53:48,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 06:53:48,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 06:53:48,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 06:53:48,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 06:53:48,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 06:53:48,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 06:53:48,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 06:53:48,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 06:53:48,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 06:53:48,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 06:53:48,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 06:53:48,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 06:53:48,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 06:53:48,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 06:53:48,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 06:53:48,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 06:53:48,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 06:53:48,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 06:53:48,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 06:53:48,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 06:53:48,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 06:53:48,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 06:53:48,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 06:53:48,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 06:53:48,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 06:53:48,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 06:53:48,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 06:53:48,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 06:53:48,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 06:53:48,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 06:53:48,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 06:53:48,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 06:53:48,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 06:53:48,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 06:53:48,779 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 06:53:48,804 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 06:53:48,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 06:53:48,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 06:53:48,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 06:53:48,806 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 06:53:48,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 06:53:48,806 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 06:53:48,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 06:53:48,807 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 06:53:48,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 06:53:48,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 06:53:48,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 06:53:48,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 06:53:48,808 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 06:53:48,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 06:53:48,808 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 06:53:48,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 06:53:48,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 06:53:48,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 06:53:48,809 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 06:53:48,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 06:53:48,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 06:53:48,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 06:53:48,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 06:53:48,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 06:53:48,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 06:53:48,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 06:53:48,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 06:53:48,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 06:53:48,811 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true;
[2020-09-25 06:53:49,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 06:53:49,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 06:53:49,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 06:53:49,283 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 06:53:49,283 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 06:53:49,284 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i
[2020-09-25 06:53:49,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dae1ae7a5/c134a878038f44ec9fd2c2117d383265/FLAG8a3962ab3
[2020-09-25 06:53:49,952 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 06:53:49,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/css2003.i
[2020-09-25 06:53:49,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dae1ae7a5/c134a878038f44ec9fd2c2117d383265/FLAG8a3962ab3
[2020-09-25 06:53:50,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dae1ae7a5/c134a878038f44ec9fd2c2117d383265
[2020-09-25 06:53:50,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 06:53:50,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 06:53:50,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 06:53:50,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 06:53:50,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 06:53:50,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:53:50" (1/1) ...
[2020-09-25 06:53:50,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd1f025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:50, skipping insertion in model container
[2020-09-25 06:53:50,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:53:50" (1/1) ...
[2020-09-25 06:53:50,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 06:53:50,360 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 06:53:50,571 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 06:53:50,577 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 06:53:50,598 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 06:53:50,617 INFO L208 MainTranslator]: Completed translation
[2020-09-25 06:53:50,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:50 WrapperNode
[2020-09-25 06:53:50,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 06:53:50,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 06:53:50,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 06:53:50,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 06:53:50,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:50" (1/1) ...
[2020-09-25 06:53:50,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:50" (1/1) ...
[2020-09-25 06:53:50,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:50" (1/1) ...
[2020-09-25 06:53:50,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:50" (1/1) ...
[2020-09-25 06:53:50,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:50" (1/1) ...
[2020-09-25 06:53:50,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:50" (1/1) ...
[2020-09-25 06:53:50,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:50" (1/1) ...
[2020-09-25 06:53:50,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 06:53:50,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 06:53:50,656 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 06:53:50,656 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 06:53:50,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:50" (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 06:53:50,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 06:53:50,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 06:53:50,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-25 06:53:50,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 06:53:50,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 06:53:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 06:53:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 06:53:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-25 06:53:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 06:53:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 06:53:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 06:53:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 06:53:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 06:53:51,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 06:53:51,032 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 06:53:51,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:53:51 BoogieIcfgContainer
[2020-09-25 06:53:51,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 06:53:51,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 06:53:51,056 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 06:53:51,062 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 06:53:51,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:53:50" (1/3) ...
[2020-09-25 06:53:51,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189bbebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:53:51, skipping insertion in model container
[2020-09-25 06:53:51,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:53:50" (2/3) ...
[2020-09-25 06:53:51,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189bbebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:53:51, skipping insertion in model container
[2020-09-25 06:53:51,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:53:51" (3/3) ...
[2020-09-25 06:53:51,068 INFO L109 eAbstractionObserver]: Analyzing ICFG css2003.i
[2020-09-25 06:53:51,096 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 06:53:51,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 06:53:51,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 06:53:51,186 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 06:53:51,186 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 06:53:51,186 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 06:53:51,187 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 06:53:51,187 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 06:53:51,187 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 06:53:51,187 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 06:53:51,187 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 06:53:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states.
[2020-09-25 06:53:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-09-25 06:53:51,222 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 06:53:51,223 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]
[2020-09-25 06:53:51,224 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 06:53:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 06:53:51,234 INFO L82 PathProgramCache]: Analyzing trace with hash 318822911, now seen corresponding path program 1 times
[2020-09-25 06:53:51,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 06:53:51,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637905026]
[2020-09-25 06:53:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 06:53:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:53:51,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:53:51,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:53:51,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30
[2020-09-25 06:53:51,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:53:51,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321
[2020-09-25 06:53:51,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:53:51,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:53:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 06:53:51,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 06:53:51,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-09-25 06:53:51,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 06:53:51,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 06:53:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:53:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:53:51,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:53:51,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 06:53:51,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:53:51,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 06:53:51,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:53:51,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:53:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 06:53:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 06:53:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 06:53:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:53:51,886 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 06:53:51,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637905026]
[2020-09-25 06:53:51,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 06:53:51,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-25 06:53:51,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278949025]
[2020-09-25 06:53:51,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 06:53:51,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 06:53:51,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 06:53:51,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-25 06:53:51,916 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 7 states.
[2020-09-25 06:53:52,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 06:53:52,091 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions.
[2020-09-25 06:53:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-09-25 06:53:52,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21
[2020-09-25 06:53:52,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 06:53:52,103 INFO L225 Difference]: With dead ends: 48
[2020-09-25 06:53:52,103 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 06:53:52,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2020-09-25 06:53:52,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 06:53:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 06:53:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 06:53:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 06:53:52,141 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21
[2020-09-25 06:53:52,142 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 06:53:52,142 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 06:53:52,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 06:53:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 06:53:52,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 06:53:52,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 06:53:52,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 06:53:52,214 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 06:53:52,214 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 06:53:52,214 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 06:53:52,214 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 06:53:52,214 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 06:53:52,215 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 06:53:52,215 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed.
[2020-09-25 06:53:52,215 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed.
[2020-09-25 06:53:52,215 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed.
[2020-09-25 06:53:52,215 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed.
[2020-09-25 06:53:52,215 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed.
[2020-09-25 06:53:52,216 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed.
[2020-09-25 06:53:52,217 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 1 main_~i~0) (<= .cse0 2) (<= 1 .cse0)))
[2020-09-25 06:53:52,217 INFO L264 CegarLoopResult]: At program point L23-1(lines 19 24) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 1 main_~i~0) (<= .cse0 2) (<= 1 .cse0)))
[2020-09-25 06:53:52,217 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed.
[2020-09-25 06:53:52,218 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed.
[2020-09-25 06:53:52,218 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 24) no Hoare annotation was computed.
[2020-09-25 06:53:52,219 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed.
[2020-09-25 06:53:52,219 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-09-25 06:53:52,219 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed.
[2020-09-25 06:53:52,219 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed.
[2020-09-25 06:53:52,220 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true
[2020-09-25 06:53:52,220 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed.
[2020-09-25 06:53:52,220 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed.
[2020-09-25 06:53:52,221 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed.
[2020-09-25 06:53:52,223 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed.
[2020-09-25 06:53:52,223 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-25 06:53:52,224 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed.
[2020-09-25 06:53:52,224 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed.
[2020-09-25 06:53:52,224 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true
[2020-09-25 06:53:52,224 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed.
[2020-09-25 06:53:52,224 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-25 06:53:52,224 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed.
[2020-09-25 06:53:52,225 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed.
[2020-09-25 06:53:52,225 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed.
[2020-09-25 06:53:52,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:53:52 BoogieIcfgContainer
[2020-09-25 06:53:52,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 06:53:52,257 INFO L168 Benchmark]: Toolchain (without parser) took 1952.31 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.0 MB in the beginning and 114.8 MB in the end (delta: -12.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB.
[2020-09-25 06:53:52,261 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-25 06:53:52,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.00 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
[2020-09-25 06:53:52,264 INFO L168 Benchmark]: Boogie Preprocessor took 36.33 ms. Allocated memory is still 140.0 MB. Free memory was 92.1 MB in the beginning and 90.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB.
[2020-09-25 06:53:52,274 INFO L168 Benchmark]: RCFGBuilder took 382.84 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 90.5 MB in the beginning and 169.1 MB in the end (delta: -78.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB.
[2020-09-25 06:53:52,276 INFO L168 Benchmark]: TraceAbstraction took 1198.29 ms. Allocated memory is still 202.4 MB. Free memory was 168.5 MB in the beginning and 114.8 MB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB.
[2020-09-25 06:53:52,284 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 310.00 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 36.33 ms. Allocated memory is still 140.0 MB. Free memory was 92.1 MB in the beginning and 90.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 382.84 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 90.5 MB in the beginning and 169.1 MB in the end (delta: -78.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1198.29 ms. Allocated memory is still 202.4 MB. Free memory was 168.5 MB in the beginning and 114.8 MB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 8]: 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: 19]: Loop Invariant
Derived loop invariant: (1 <= i && i + k <= 2) && 1 <= i + k
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 13 SDslu, 88 SDs, 0 SdLazy, 50 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 7 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 33 HoareAnnotationTreeSize, 8 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 2420 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...