/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-2.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 19:17:53,508 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 19:17:53,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 19:17:53,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 19:17:53,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 19:17:53,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 19:17:53,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 19:17:53,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 19:17:53,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 19:17:53,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 19:17:53,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 19:17:53,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 19:17:53,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 19:17:53,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 19:17:53,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 19:17:53,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 19:17:53,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 19:17:53,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 19:17:53,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 19:17:53,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 19:17:53,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 19:17:53,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 19:17:53,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 19:17:53,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 19:17:53,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 19:17:53,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 19:17:53,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 19:17:53,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 19:17:53,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 19:17:53,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 19:17:53,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 19:17:53,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 19:17:53,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 19:17:53,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 19:17:53,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 19:17:53,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 19:17:53,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 19:17:53,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 19:17:53,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 19:17:53,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 19:17:53,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 19:17:53,584 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 19:17:53,612 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 19:17:53,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 19:17:53,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 19:17:53,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 19:17:53,615 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 19:17:53,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 19:17:53,615 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 19:17:53,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 19:17:53,616 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 19:17:53,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 19:17:53,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 19:17:53,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 19:17:53,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 19:17:53,617 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 19:17:53,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 19:17:53,618 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 19:17:53,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 19:17:53,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 19:17:53,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 19:17:53,619 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 19:17:53,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 19:17:53,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 19:17:53,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 19:17:53,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 19:17:53,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 19:17:53,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 19:17:53,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 19:17:53,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 19:17:53,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 19:17:53,622 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-09-24 19:17:54,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 19:17:54,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 19:17:54,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 19:17:54,134 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 19:17:54,135 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 19:17:54,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-2.c
[2020-09-24 19:17:54,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b670fe97b/59c0dc6645984456aba5bf99b2f64858/FLAGa61cd4fb9
[2020-09-24 19:17:54,784 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 19:17:54,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-2.c
[2020-09-24 19:17:54,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b670fe97b/59c0dc6645984456aba5bf99b2f64858/FLAGa61cd4fb9
[2020-09-24 19:17:55,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b670fe97b/59c0dc6645984456aba5bf99b2f64858
[2020-09-24 19:17:55,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 19:17:55,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 19:17:55,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 19:17:55,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 19:17:55,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 19:17:55,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:55" (1/1) ...
[2020-09-24 19:17:55,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218f381a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55, skipping insertion in model container
[2020-09-24 19:17:55,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:55" (1/1) ...
[2020-09-24 19:17:55,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 19:17:55,178 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 19:17:55,400 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:17:55,406 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 19:17:55,422 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:17:55,438 INFO L208 MainTranslator]: Completed translation
[2020-09-24 19:17:55,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55 WrapperNode
[2020-09-24 19:17:55,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 19:17:55,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 19:17:55,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 19:17:55,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 19:17:55,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ...
[2020-09-24 19:17:55,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ...
[2020-09-24 19:17:55,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ...
[2020-09-24 19:17:55,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ...
[2020-09-24 19:17:55,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ...
[2020-09-24 19:17:55,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ...
[2020-09-24 19:17:55,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ...
[2020-09-24 19:17:55,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 19:17:55,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 19:17:55,471 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 19:17:55,471 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 19:17:55,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (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 19:17:55,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 19:17:55,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 19:17:55,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 19:17:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 19:17:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 19:17:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 19:17:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 19:17:55,840 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 19:17:55,840 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 19:17:55,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:55 BoogieIcfgContainer
[2020-09-24 19:17:55,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 19:17:55,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 19:17:55,846 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 19:17:55,850 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 19:17:55,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:17:55" (1/3) ...
[2020-09-24 19:17:55,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cf071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:55, skipping insertion in model container
[2020-09-24 19:17:55,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (2/3) ...
[2020-09-24 19:17:55,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cf071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:55, skipping insertion in model container
[2020-09-24 19:17:55,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:55" (3/3) ...
[2020-09-24 19:17:55,855 INFO L109 eAbstractionObserver]: Analyzing ICFG implicitunsignedconversion-2.c
[2020-09-24 19:17:55,866 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 19:17:55,876 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 19:17:55,898 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 19:17:55,929 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 19:17:55,930 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 19:17:55,930 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 19:17:55,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 19:17:55,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 19:17:55,931 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 19:17:55,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 19:17:55,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 19:17:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states.
[2020-09-24 19:17:55,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2020-09-24 19:17:55,959 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 19:17:55,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 19:17:55,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:17:55,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:17:55,967 INFO L82 PathProgramCache]: Analyzing trace with hash 811150295, now seen corresponding path program 1 times
[2020-09-24 19:17:55,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:17:55,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833036006]
[2020-09-24 19:17:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:17:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:17:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:17:56,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:17:56,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-09-24 19:17:56,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:17:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65
[2020-09-24 19:17:56,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:17:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 19:17:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-24 19:17:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-09-24 19:17:56,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 19:17:56,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 19:17:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:17:56,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:17:56,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:17:56,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 19:17:56,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:17:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 19:17:56,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:17:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:17:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 19:17:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:17:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:17:56,292 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 19:17:56,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833036006]
[2020-09-24 19:17:56,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 19:17:56,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 19:17:56,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677666449]
[2020-09-24 19:17:56,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 19:17:56,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 19:17:56,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 19:17:56,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 19:17:56,330 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states.
[2020-09-24 19:17:56,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 19:17:56,369 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions.
[2020-09-24 19:17:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 19:17:56,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8
[2020-09-24 19:17:56,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 19:17:56,384 INFO L225 Difference]: With dead ends: 19
[2020-09-24 19:17:56,384 INFO L226 Difference]: Without dead ends: 0
[2020-09-24 19:17:56,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 19:17:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 19:17:56,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 19:17:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 19:17:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 19:17:56,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8
[2020-09-24 19:17:56,434 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 19:17:56,434 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 19:17:56,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 19:17:56,435 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 19:17:56,435 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 19:17:56,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 19:17:56,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 19:17:56,486 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-24 19:17:56,487 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 19:17:56,487 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 19:17:56,494 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-24 19:17:56,494 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-24 19:17:56,494 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-24 19:17:56,495 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed.
[2020-09-24 19:17:56,495 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 3 14) the Hoare annotation is: true
[2020-09-24 19:17:56,495 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed.
[2020-09-24 19:17:56,496 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 3 14) no Hoare annotation was computed.
[2020-09-24 19:17:56,496 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed.
[2020-09-24 19:17:56,496 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 3 14) no Hoare annotation was computed.
[2020-09-24 19:17:56,496 INFO L264 CegarLoopResult]: At program point L8(lines 3 14) the Hoare annotation is: false
[2020-09-24 19:17:56,496 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed.
[2020-09-24 19:17:56,497 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed.
[2020-09-24 19:17:56,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:17:56 BoogieIcfgContainer
[2020-09-24 19:17:56,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 19:17:56,529 INFO L168 Benchmark]: Toolchain (without parser) took 1398.21 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 142.6 MB in the end (delta: -41.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB.
[2020-09-24 19:17:56,531 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 19:17:56,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.50 ms. Allocated memory is still 137.9 MB. Free memory was 100.8 MB in the beginning and 91.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB.
[2020-09-24 19:17:56,533 INFO L168 Benchmark]: Boogie Preprocessor took 30.97 ms. Allocated memory is still 137.9 MB. Free memory was 91.7 MB in the beginning and 90.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-09-24 19:17:56,534 INFO L168 Benchmark]: RCFGBuilder took 374.74 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 90.4 MB in the beginning and 171.0 MB in the end (delta: -80.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB.
[2020-09-24 19:17:56,535 INFO L168 Benchmark]: TraceAbstraction took 679.07 ms. Allocated memory is still 201.9 MB. Free memory was 170.3 MB in the beginning and 142.6 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB.
[2020-09-24 19:17:56,540 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 305.50 ms. Allocated memory is still 137.9 MB. Free memory was 100.8 MB in the beginning and 91.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 30.97 ms. Allocated memory is still 137.9 MB. Free memory was 91.7 MB in the beginning and 90.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 374.74 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 90.4 MB in the beginning and 171.0 MB in the end (delta: -80.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 679.07 ms. Allocated memory is still 201.9 MB. Free memory was 170.3 MB in the beginning and 142.6 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 12]: 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: 3]: Loop Invariant
Derived loop invariant: 0
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 3 SDslu, 7 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 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...