/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sqm-iff.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:10:00,044 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:10:00,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:10:00,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:10:00,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:10:00,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:10:00,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:10:00,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:10:00,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:10:00,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:10:00,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:10:00,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:10:00,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:10:00,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:10:00,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:10:00,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:10:00,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:10:00,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:10:00,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:10:00,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:10:00,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:10:00,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:10:00,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:10:00,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:10:00,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:10:00,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:10:00,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:10:00,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:10:00,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:10:00,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:10:00,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:10:00,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:10:00,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:10:00,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:10:00,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:10:00,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:10:00,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:10:00,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:10:00,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:10:00,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:10:00,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:10:00,177 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 16:10:00,228 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 16:10:00,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:10:00,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:10:00,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 16:10:00,231 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 16:10:00,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:10:00,232 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 16:10:00,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 16:10:00,233 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 16:10:00,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 16:10:00,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:10:00,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:10:00,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:10:00,235 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 16:10:00,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 16:10:00,235 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 16:10:00,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:10:00,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:10:00,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 16:10:00,236 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 16:10:00,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 16:10:00,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:10:00,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:10:00,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:10:00,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:10:00,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 16:10:00,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:10:00,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:10:00,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 16:10:00,238 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true;
[2020-09-24 16:10:00,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:10:00,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:10:00,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:10:00,717 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 16:10:00,718 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 16:10:00,719 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqm-iff.c
[2020-09-24 16:10:00,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b6daddac/afc62251bc51451b8121396960f3df80/FLAG0d48823f5
[2020-09-24 16:10:01,359 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 16:10:01,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sqm-iff.c
[2020-09-24 16:10:01,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b6daddac/afc62251bc51451b8121396960f3df80/FLAG0d48823f5
[2020-09-24 16:10:01,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b6daddac/afc62251bc51451b8121396960f3df80
[2020-09-24 16:10:01,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:10:01,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:10:01,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:10:01,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:10:01,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:10:01,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:01" (1/1) ...
[2020-09-24 16:10:01,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5f9fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:01, skipping insertion in model container
[2020-09-24 16:10:01,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:01" (1/1) ...
[2020-09-24 16:10:01,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 16:10:01,781 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:10:02,004 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:10:02,018 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 16:10:02,044 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:10:02,064 INFO L208 MainTranslator]: Completed translation
[2020-09-24 16:10:02,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02 WrapperNode
[2020-09-24 16:10:02,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:10:02,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:10:02,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:10:02,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:10:02,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ...
[2020-09-24 16:10:02,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ...
[2020-09-24 16:10:02,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ...
[2020-09-24 16:10:02,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ...
[2020-09-24 16:10:02,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ...
[2020-09-24 16:10:02,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ...
[2020-09-24 16:10:02,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ...
[2020-09-24 16:10:02,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:10:02,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:10:02,201 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:10:02,209 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:10:02,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (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 16:10:02,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:10:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:10:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 16:10:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-24 16:10:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 16:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 16:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-24 16:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 16:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 16:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 16:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 16:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 16:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 16:10:02,665 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:10:02,665 INFO L295 CfgBuilder]: Removed 3 assume(true) statements.
[2020-09-24 16:10:02,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:02 BoogieIcfgContainer
[2020-09-24 16:10:02,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:10:02,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:10:02,672 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:10:02,676 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:10:02,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:10:01" (1/3) ...
[2020-09-24 16:10:02,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474ce2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:02, skipping insertion in model container
[2020-09-24 16:10:02,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (2/3) ...
[2020-09-24 16:10:02,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474ce2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:02, skipping insertion in model container
[2020-09-24 16:10:02,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:02" (3/3) ...
[2020-09-24 16:10:02,681 INFO L109 eAbstractionObserver]: Analyzing ICFG sqm-iff.c
[2020-09-24 16:10:02,692 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:10:02,702 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:10:02,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:10:02,761 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:10:02,762 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 16:10:02,762 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:10:02,762 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:10:02,762 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:10:02,762 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 16:10:02,762 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:10:02,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:10:02,790 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states.
[2020-09-24 16:10:02,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-09-24 16:10:02,801 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 16:10:02,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:10:02,803 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:10:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:10:02,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1150160147, now seen corresponding path program 1 times
[2020-09-24 16:10:02,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:10:02,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258345281]
[2020-09-24 16:10:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:10:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:10:03,074 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:10:03,074 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:10:03,074 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:10:03,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:10:03,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44
[2020-09-24 16:10:03,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:10:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27
[2020-09-24 16:10:03,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:10:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 16:10:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-24 16:10:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-09-24 16:10:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:10:03,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:10:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:10:03,246 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:10:03,246 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:10:03,247 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:10:03,247 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:10:03,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 16:10:03,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:10:03,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:10:03,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:10:03,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:10:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:10:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:10:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:10:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-24 16:10:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:10:03,265 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:10:03,265 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:10:03,266 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:10:03,266 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:10:03,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 16:10:03,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:10:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 16:10:03,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:10:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:10:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:10:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 16:10:03,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:10:03,282 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 16:10:03,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258345281]
[2020-09-24 16:10:03,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:10:03,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 16:10:03,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577354449]
[2020-09-24 16:10:03,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 16:10:03,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:10:03,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 16:10:03,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:10:03,316 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 5 states.
[2020-09-24 16:10:03,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:10:03,599 INFO L93 Difference]: Finished difference Result 120 states and 144 transitions.
[2020-09-24 16:10:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-24 16:10:03,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33
[2020-09-24 16:10:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:10:03,614 INFO L225 Difference]: With dead ends: 120
[2020-09-24 16:10:03,614 INFO L226 Difference]: Without dead ends: 61
[2020-09-24 16:10:03,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-09-24 16:10:03,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2020-09-24 16:10:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60.
[2020-09-24 16:10:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2020-09-24 16:10:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions.
[2020-09-24 16:10:03,680 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 33
[2020-09-24 16:10:03,681 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:10:03,681 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions.
[2020-09-24 16:10:03,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 16:10:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions.
[2020-09-24 16:10:03,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-09-24 16:10:03,683 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 16:10:03,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:10:03,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:10:03,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:10:03,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:10:03,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1596799413, now seen corresponding path program 1 times
[2020-09-24 16:10:03,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:10:03,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593591785]
[2020-09-24 16:10:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:10:03,719 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2020-09-24 16:10:03,719 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2020-09-24 16:10:03,719 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 16:10:03,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:10:03,748 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2020-09-24 16:10:03,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:10:03 BoogieIcfgContainer
[2020-09-24 16:10:03,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 16:10:03,753 INFO L168 Benchmark]: Toolchain (without parser) took 2021.92 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 101.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB.
[2020-09-24 16:10:03,754 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 16:10:03,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.04 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 91.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
[2020-09-24 16:10:03,757 INFO L168 Benchmark]: Boogie Preprocessor took 133.95 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 181.1 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB.
[2020-09-24 16:10:03,758 INFO L168 Benchmark]: RCFGBuilder took 470.27 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 161.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB.
[2020-09-24 16:10:03,759 INFO L168 Benchmark]: TraceAbstraction took 1077.15 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 101.6 MB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB.
[2020-09-24 16:10:03,763 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 329.04 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 91.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 133.95 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 181.1 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 470.27 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 161.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1077.15 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 101.6 MB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L17] int N;
[L21] N = __VERIFIER_nondet_int()
[L22] COND FALSE !(N <= 0)
[L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L11] COND FALSE !(!cond)
[L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L25] int i;
[L26] long long *a = malloc(sizeof(long long)*N);
[L27] long long *b = malloc(sizeof(long long)*N);
[L29] i=0
[L29] COND TRUE i<N
[L31] COND TRUE i==0
[L32] b[0] = 1
[L29] i++
[L29] COND FALSE !(i<N)
[L38] i=0
[L38] COND TRUE i<N
[L40] COND TRUE i==0
[L41] a[0] = 1
[L38] i++
[L38] COND FALSE !(i<N)
[L47] i=0
[L47] COND TRUE i<N
[L49] EXPR a[i]
[L49] CALL __VERIFIER_assert(a[i] == i*i)
[L13] COND TRUE !(cond)
[L13] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 83 SDslu, 38 SDs, 0 SdLazy, 107 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1984 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 could not prove your program: unable to determine feasibility of some traces
Received shutdown request...