/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/inv_square-1.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 20:14:53,122 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-08-18 20:14:53,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 20:14:53,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 20:14:53,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 20:14:53,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 20:14:53,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 20:14:53,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 20:14:53,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 20:14:53,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 20:14:53,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 20:14:53,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 20:14:53,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 20:14:53,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 20:14:53,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 20:14:53,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 20:14:53,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 20:14:53,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 20:14:53,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 20:14:53,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 20:14:53,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 20:14:53,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 20:14:53,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 20:14:53,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 20:14:53,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 20:14:53,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 20:14:53,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 20:14:53,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 20:14:53,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 20:14:53,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 20:14:53,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 20:14:53,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 20:14:53,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 20:14:53,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 20:14:53,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 20:14:53,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 20:14:53,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 20:14:53,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 20:14:53,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 20:14:53,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 20:14:53,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 20:14:53,189 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
[2020-08-18 20:14:53,228 INFO L113 SettingsManager]: Loading preferences was successful
[2020-08-18 20:14:53,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 20:14:53,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 20:14:53,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-08-18 20:14:53,233 INFO L138 SettingsManager]: * Use SBE=true
[2020-08-18 20:14:53,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 20:14:53,233 INFO L138 SettingsManager]: * sizeof long=4
[2020-08-18 20:14:53,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-08-18 20:14:53,234 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-08-18 20:14:53,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-08-18 20:14:53,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 20:14:53,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 20:14:53,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 20:14:53,235 INFO L138 SettingsManager]: * sizeof long double=12
[2020-08-18 20:14:53,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-08-18 20:14:53,235 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-08-18 20:14:53,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-08-18 20:14:53,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 20:14:53,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-08-18 20:14:53,239 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-08-18 20:14:53,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-08-18 20:14:53,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 20:14:53,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 20:14:53,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 20:14:53,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 20:14:53,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-08-18 20:14:53,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 20:14:53,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 20:14:53,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-08-18 20:14:53,241 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.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST;
[2020-08-18 20:14:53,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 20:14:53,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 20:14:53,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 20:14:53,550 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-08-18 20:14:53,550 INFO L275 PluginConnector]: CDTParser initialized
[2020-08-18 20:14:53,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_square-1.c
[2020-08-18 20:14:53,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f567d7b0e/260cd140e8a64f0dbeb9f51455ba5a0d/FLAG563fac010
[2020-08-18 20:14:54,049 INFO L306 CDTParser]: Found 1 translation units.
[2020-08-18 20:14:54,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/inv_square-1.c
[2020-08-18 20:14:54,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f567d7b0e/260cd140e8a64f0dbeb9f51455ba5a0d/FLAG563fac010
[2020-08-18 20:14:54,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f567d7b0e/260cd140e8a64f0dbeb9f51455ba5a0d
[2020-08-18 20:14:54,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 20:14:54,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 20:14:54,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 20:14:54,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 20:14:54,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 20:14:54,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:14:54" (1/1) ...
[2020-08-18 20:14:54,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4363b436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54, skipping insertion in model container
[2020-08-18 20:14:54,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:14:54" (1/1) ...
[2020-08-18 20:14:54,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-08-18 20:14:54,486 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-08-18 20:14:54,715 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-18 20:14:54,721 INFO L203 MainTranslator]: Completed pre-run
[2020-08-18 20:14:54,741 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-18 20:14:54,757 INFO L208 MainTranslator]: Completed translation
[2020-08-18 20:14:54,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54 WrapperNode
[2020-08-18 20:14:54,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 20:14:54,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 20:14:54,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 20:14:54,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 20:14:54,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ...
[2020-08-18 20:14:54,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ...
[2020-08-18 20:14:54,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ...
[2020-08-18 20:14:54,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ...
[2020-08-18 20:14:54,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ...
[2020-08-18 20:14:54,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ...
[2020-08-18 20:14:54,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ...
[2020-08-18 20:14:54,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 20:14:54,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 20:14:54,794 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 20:14:54,794 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-08-18 20:14:54,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (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
[2020-08-18 20:14:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 20:14:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 20:14:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-08-18 20:14:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-08-18 20:14:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 20:14:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 20:14:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float
[2020-08-18 20:14:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-08-18 20:14:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-08-18 20:14:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-08-18 20:14:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-08-18 20:14:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 20:14:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 20:14:55,116 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 20:14:55,116 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-08-18 20:14:55,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:14:55 BoogieIcfgContainer
[2020-08-18 20:14:55,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 20:14:55,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 20:14:55,122 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 20:14:55,125 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-08-18 20:14:55,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:14:54" (1/3) ...
[2020-08-18 20:14:55,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b63b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:14:55, skipping insertion in model container
[2020-08-18 20:14:55,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (2/3) ...
[2020-08-18 20:14:55,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b63b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:14:55, skipping insertion in model container
[2020-08-18 20:14:55,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:14:55" (3/3) ...
[2020-08-18 20:14:55,129 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-1.c
[2020-08-18 20:14:55,140 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 20:14:55,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 20:14:55,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 20:14:55,221 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-08-18 20:14:55,221 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-08-18 20:14:55,222 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 20:14:55,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 20:14:55,222 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 20:14:55,222 INFO L380 AbstractCegarLoop]: Difference is false
[2020-08-18 20:14:55,223 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 20:14:55,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 20:14:55,243 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states.
[2020-08-18 20:14:55,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-08-18 20:14:55,250 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-18 20:14:55,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 20:14:55,251 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 20:14:55,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 20:14:55,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1226267161, now seen corresponding path program 1 times
[2020-08-18 20:14:55,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 20:14:55,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359190034]
[2020-08-18 20:14:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 20:14:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:14:55,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 20:14:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 20:14:55,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-08-18 20:14:55,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 20:14:55,406 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.<init>(TraceCheck.java:235)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.<init>(InterpolatingTraceCheck.java:90)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.<init>(InterpolatingTraceCheckCraig.java:89)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.<init>(InterpolatingTraceCheckCraig.java:97)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:75)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:127)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms
at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:557)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertLocalVarAssignemntPendingContext(AnnotateAndAssertCodeBlocks.java:169)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:120)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:295)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.<init>(TraceCheck.java:206)
... 30 more
[2020-08-18 20:14:55,411 INFO L168 Benchmark]: Toolchain (without parser) took 968.64 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 157.4 MB in the end (delta: -54.4 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB.
[2020-08-18 20:14:55,413 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB.
[2020-08-18 20:14:55,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.53 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
[2020-08-18 20:14:55,415 INFO L168 Benchmark]: Boogie Preprocessor took 35.31 ms. Allocated memory is still 140.0 MB. Free memory was 93.6 MB in the beginning and 91.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB.
[2020-08-18 20:14:55,416 INFO L168 Benchmark]: RCFGBuilder took 326.37 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 168.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB.
[2020-08-18 20:14:55,417 INFO L168 Benchmark]: TraceAbstraction took 286.76 ms. Allocated memory is still 202.4 MB. Free memory was 168.9 MB in the beginning and 157.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB.
[2020-08-18 20:14:55,421 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 313.53 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 35.31 ms. Allocated memory is still 140.0 MB. Free memory was 93.6 MB in the beginning and 91.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 326.37 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 168.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 286.76 ms. Allocated memory is still 202.4 MB. Free memory was 168.9 MB in the beginning and 157.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.<init>(TraceCheck.java:235)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...