/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/eqn2.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-0f64333
[2020-10-29 03:53:33,741 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-29 03:53:33,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-29 03:53:33,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-29 03:53:33,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-29 03:53:33,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-29 03:53:33,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-29 03:53:33,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-29 03:53:33,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-29 03:53:33,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-29 03:53:33,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-10-29 03:53:33,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-29 03:53:33,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-29 03:53:33,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-29 03:53:33,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-29 03:53:33,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-29 03:53:33,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-29 03:53:33,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-29 03:53:33,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-29 03:53:33,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-29 03:53:33,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-29 03:53:33,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-29 03:53:33,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-10-29 03:53:33,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-29 03:53:33,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-29 03:53:33,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-29 03:53:33,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-29 03:53:33,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-29 03:53:33,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-29 03:53:33,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-29 03:53:33,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-29 03:53:33,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-29 03:53:33,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-29 03:53:33,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-29 03:53:33,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-29 03:53:33,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-29 03:53:33,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-29 03:53:33,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-29 03:53:33,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-29 03:53:33,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-29 03:53:33,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-10-29 03:53:33,837 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
[2020-10-29 03:53:33,903 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-29 03:53:33,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-29 03:53:33,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-29 03:53:33,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-10-29 03:53:33,906 INFO L138 SettingsManager]: * Use SBE=true
[2020-10-29 03:53:33,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-29 03:53:33,906 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-29 03:53:33,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-29 03:53:33,906 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-29 03:53:33,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-29 03:53:33,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-29 03:53:33,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-29 03:53:33,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-29 03:53:33,907 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-29 03:53:33,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-29 03:53:33,908 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-29 03:53:33,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-29 03:53:33,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-29 03:53:33,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-10-29 03:53:33,909 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-29 03:53:33,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-29 03:53:33,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 03:53:33,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-29 03:53:33,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-10-29 03:53:33,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-29 03:53:33,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-10-29 03:53:33,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-29 03:53:33,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-29 03:53:33,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-10-29 03:53:33,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true;
[2020-10-29 03:53:34,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-29 03:53:34,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-29 03:53:34,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-29 03:53:34,348 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-29 03:53:34,349 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-29 03:53:34,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn2.c
[2020-10-29 03:53:34,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2c26b16d/c0feec5f5ad1407499310029e7689ff1/FLAG52f4e4cdc
[2020-10-29 03:53:35,038 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-29 03:53:35,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/eqn2.c
[2020-10-29 03:53:35,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2c26b16d/c0feec5f5ad1407499310029e7689ff1/FLAG52f4e4cdc
[2020-10-29 03:53:35,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2c26b16d/c0feec5f5ad1407499310029e7689ff1
[2020-10-29 03:53:35,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-29 03:53:35,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-29 03:53:35,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-29 03:53:35,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-29 03:53:35,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-29 03:53:35,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:53:35" (1/1) ...
[2020-10-29 03:53:35,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771f0335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:35, skipping insertion in model container
[2020-10-29 03:53:35,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:53:35" (1/1) ...
[2020-10-29 03:53:35,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-29 03:53:35,446 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-10-29 03:53:35,626 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-29 03:53:35,636 INFO L203 MainTranslator]: Completed pre-run
[2020-10-29 03:53:35,659 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-29 03:53:35,676 INFO L208 MainTranslator]: Completed translation
[2020-10-29 03:53:35,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:35 WrapperNode
[2020-10-29 03:53:35,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-29 03:53:35,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-29 03:53:35,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-29 03:53:35,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-29 03:53:35,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:35" (1/1) ...
[2020-10-29 03:53:35,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:35" (1/1) ...
[2020-10-29 03:53:35,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:35" (1/1) ...
[2020-10-29 03:53:35,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:35" (1/1) ...
[2020-10-29 03:53:35,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:35" (1/1) ...
[2020-10-29 03:53:35,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:35" (1/1) ...
[2020-10-29 03:53:35,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:35" (1/1) ...
[2020-10-29 03:53:35,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-29 03:53:35,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-29 03:53:35,781 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-29 03:53:35,781 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-29 03:53:35,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:35" (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
[2020-10-29 03:53:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-29 03:53:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-29 03:53:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-29 03:53:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-10-29 03:53:35,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-10-29 03:53:35,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-10-29 03:53:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-10-29 03:53:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-29 03:53:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-29 03:53:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-29 03:53:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-10-29 03:53:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-10-29 03:53:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-29 03:53:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-10-29 03:53:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-10-29 03:53:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-10-29 03:53:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-10-29 03:53:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-10-29 03:53:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-29 03:53:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-29 03:53:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-29 03:53:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-29 03:53:36,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-29 03:53:36,478 INFO L298 CfgBuilder]: Removed 3 assume(true) statements.
[2020-10-29 03:53:36,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:53:36 BoogieIcfgContainer
[2020-10-29 03:53:36,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-29 03:53:36,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-29 03:53:36,486 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-29 03:53:36,490 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-29 03:53:36,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:53:35" (1/3) ...
[2020-10-29 03:53:36,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d4dfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:53:36, skipping insertion in model container
[2020-10-29 03:53:36,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:35" (2/3) ...
[2020-10-29 03:53:36,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d4dfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:53:36, skipping insertion in model container
[2020-10-29 03:53:36,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:53:36" (3/3) ...
[2020-10-29 03:53:36,495 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn2.c
[2020-10-29 03:53:36,511 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-29 03:53:36,521 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-29 03:53:36,537 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-29 03:53:36,584 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-29 03:53:36,584 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-29 03:53:36,584 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-29 03:53:36,584 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-29 03:53:36,585 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-29 03:53:36,585 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-29 03:53:36,585 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-29 03:53:36,585 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-29 03:53:36,613 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states.
[2020-10-29 03:53:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-29 03:53:36,627 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-29 03:53:36,628 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]
[2020-10-29 03:53:36,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 03:53:36,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 03:53:36,639 INFO L82 PathProgramCache]: Analyzing trace with hash -391571351, now seen corresponding path program 1 times
[2020-10-29 03:53:36,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 03:53:36,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854434275]
[2020-10-29 03:53:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 03:53:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 03:53:36,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 03:53:36,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854434275]
[2020-10-29 03:53:36,890 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2020-10-29 03:53:36,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences.
[2020-10-29 03:53:36,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0
[2020-10-29 03:53:36,891 ERROR L205 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible
[2020-10-29 03:53:36,891 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-10-29 03:53:36,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-29 03:53:36,913 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2020-10-29 03:53:36,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 03:53:36 BoogieIcfgContainer
[2020-10-29 03:53:36,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-29 03:53:36,917 INFO L168 Benchmark]: Toolchain (without parser) took 1517.81 ms. Allocated memory is still 162.5 MB. Free memory was 116.6 MB in the beginning and 110.5 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB.
[2020-10-29 03:53:36,918 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 162.5 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-29 03:53:36,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.04 ms. Allocated memory is still 162.5 MB. Free memory was 116.0 MB in the beginning and 106.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-10-29 03:53:36,920 INFO L168 Benchmark]: Boogie Preprocessor took 101.39 ms. Allocated memory is still 162.5 MB. Free memory was 106.1 MB in the beginning and 144.3 MB in the end (delta: -38.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB.
[2020-10-29 03:53:36,921 INFO L168 Benchmark]: RCFGBuilder took 699.48 ms. Allocated memory is still 162.5 MB. Free memory was 144.3 MB in the beginning and 126.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB.
[2020-10-29 03:53:36,922 INFO L168 Benchmark]: TraceAbstraction took 428.50 ms. Allocated memory is still 162.5 MB. Free memory was 126.2 MB in the beginning and 110.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
[2020-10-29 03:53:36,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.63 ms. Allocated memory is still 162.5 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 268.04 ms. Allocated memory is still 162.5 MB. Free memory was 116.0 MB in the beginning and 106.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 101.39 ms. Allocated memory is still 162.5 MB. Free memory was 106.1 MB in the beginning and 144.3 MB in the end (delta: -38.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 699.48 ms. Allocated memory is still 162.5 MB. Free memory was 144.3 MB in the beginning and 126.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 428.50 ms. Allocated memory is still 162.5 MB. Free memory was 126.2 MB in the beginning and 110.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 10]: 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:
[L19] int N;
[L23] N = __VERIFIER_nondet_int()
[L24] COND FALSE !(N <= 0)
[L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L13] COND TRUE !cond
[L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L27] long long i;
[L28] long long *a = malloc(sizeof(long long)*N);
[L29] long long *b = malloc(sizeof(long long)*N);
[L31] a[0] = 4
[L32] b[0] = 1
[L34] i=1
[L34] COND FALSE !(i<N)
[L39] i=1
[L39] COND FALSE !(i<N)
[L44] i=0
[L44] COND TRUE i<N
[L46] EXPR b[i]
[L46] CALL __VERIFIER_assert(b[i] == 2*i*i + 2*i + 1)
[L15] COND TRUE !(cond)
[L15] CALL reach_error()
[L10] __assert_fail("0", "eqn2.c", 10, "reach_error")
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...