/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/fermat2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:43:45,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:43:45,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:43:45,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:43:45,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:43:45,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:43:45,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:43:45,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:43:45,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:43:45,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:43:45,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:43:45,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:43:45,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:43:45,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:43:45,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:43:45,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:43:45,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:43:45,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:43:45,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:43:45,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:43:45,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:43:45,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:43:45,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:43:45,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:43:45,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:43:45,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:43:45,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:43:45,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:43:45,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:43:45,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:43:45,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:43:45,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:43:45,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:43:45,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:43:45,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:43:45,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:43:45,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:43:45,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:43:45,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:43:46,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:43:46,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:43:46,005 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 [2020-08-19 03:43:46,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:43:46,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:43:46,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:43:46,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:43:46,056 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:43:46,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:43:46,057 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:43:46,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:43:46,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:43:46,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:43:46,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:43:46,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:43:46,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:43:46,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:43:46,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:43:46,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:43:46,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:43:46,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:43:46,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:43:46,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:43:46,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:43:46,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:43:46,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:43:46,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:43:46,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:43:46,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:43:46,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:43:46,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:43:46,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:43:46,063 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=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:43:46,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:43:46,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:43:46,401 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:43:46,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:43:46,403 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:43:46,404 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat2.c [2020-08-19 03:43:46,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5eaa12c1b/abf878d473d34cf78a4e41e6672ded4d/FLAG40dc93593 [2020-08-19 03:43:46,908 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:43:46,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/fermat2.c [2020-08-19 03:43:46,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5eaa12c1b/abf878d473d34cf78a4e41e6672ded4d/FLAG40dc93593 [2020-08-19 03:43:47,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5eaa12c1b/abf878d473d34cf78a4e41e6672ded4d [2020-08-19 03:43:47,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:43:47,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:43:47,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:43:47,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:43:47,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:43:47,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:43:47" (1/1) ... [2020-08-19 03:43:47,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d9e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:47, skipping insertion in model container [2020-08-19 03:43:47,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:43:47" (1/1) ... [2020-08-19 03:43:47,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:43:47,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:43:47,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:43:47,491 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:43:47,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:43:47,530 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:43:47,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:47 WrapperNode [2020-08-19 03:43:47,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:43:47,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:43:47,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:43:47,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:43:47,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:47" (1/1) ... [2020-08-19 03:43:47,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:47" (1/1) ... [2020-08-19 03:43:47,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:47" (1/1) ... [2020-08-19 03:43:47,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:47" (1/1) ... [2020-08-19 03:43:47,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:47" (1/1) ... [2020-08-19 03:43:47,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:47" (1/1) ... [2020-08-19 03:43:47,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:47" (1/1) ... [2020-08-19 03:43:47,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:43:47,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:43:47,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:43:47,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:43:47,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:47" (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 [2020-08-19 03:43:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:43:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:43:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 03:43:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 03:43:47,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:43:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:43:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 03:43:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 03:43:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 03:43:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 03:43:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:43:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:43:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:43:47,934 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:43:47,934 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 03:43:47,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:43:47 BoogieIcfgContainer [2020-08-19 03:43:47,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:43:47,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:43:47,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:43:47,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:43:47,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:43:47" (1/3) ... [2020-08-19 03:43:47,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e357cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:43:47, skipping insertion in model container [2020-08-19 03:43:47,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:47" (2/3) ... [2020-08-19 03:43:47,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e357cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:43:47, skipping insertion in model container [2020-08-19 03:43:47,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:43:47" (3/3) ... [2020-08-19 03:43:47,946 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat2.c [2020-08-19 03:43:47,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:43:47,963 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:43:47,975 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:43:47,996 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:43:47,996 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:43:47,996 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:43:47,996 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:43:47,997 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:43:47,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:43:47,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:43:47,997 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:43:48,016 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-19 03:43:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 03:43:48,022 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:43:48,023 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:43:48,023 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:43:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:43:48,028 INFO L82 PathProgramCache]: Analyzing trace with hash -849943384, now seen corresponding path program 1 times [2020-08-19 03:43:48,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:43:48,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234151441] [2020-08-19 03:43:48,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:43:48,096 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-19 03:43:48,097 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-19 03:43:48,097 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:43:48,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:43:48,113 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-19 03:43:48,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:43:48 BoogieIcfgContainer [2020-08-19 03:43:48,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:43:48,116 INFO L168 Benchmark]: Toolchain (without parser) took 829.97 ms. Allocated memory was 149.9 MB in the beginning and 205.5 MB in the end (delta: 55.6 MB). Free memory was 106.3 MB in the beginning and 160.0 MB in the end (delta: -53.7 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-19 03:43:48,117 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 149.9 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:43:48,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.90 ms. Allocated memory is still 149.9 MB. Free memory was 106.1 MB in the beginning and 96.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:43:48,119 INFO L168 Benchmark]: Boogie Preprocessor took 119.04 ms. Allocated memory was 149.9 MB in the beginning and 205.5 MB in the end (delta: 55.6 MB). Free memory was 96.3 MB in the beginning and 184.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:43:48,120 INFO L168 Benchmark]: RCFGBuilder took 287.22 ms. Allocated memory is still 205.5 MB. Free memory was 184.6 MB in the beginning and 170.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:43:48,121 INFO L168 Benchmark]: TraceAbstraction took 174.30 ms. Allocated memory is still 205.5 MB. Free memory was 170.2 MB in the beginning and 160.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:43:48,125 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 149.9 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.90 ms. Allocated memory is still 149.9 MB. Free memory was 106.1 MB in the beginning and 96.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.04 ms. Allocated memory was 149.9 MB in the beginning and 205.5 MB in the end (delta: 55.6 MB). Free memory was 96.3 MB in the beginning and 184.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 287.22 ms. Allocated memory is still 205.5 MB. Free memory was 184.6 MB in the beginning and 170.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 174.30 ms. Allocated memory is still 205.5 MB. Free memory was 170.2 MB in the beginning and 160.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: 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, overapproximation of to_int at line 20. Possible FailurePath: [L18] int A, R; [L19] int u, v, r; [L20] A = __VERIFIER_nondet_double() [L21] R = __VERIFIER_nondet_double() [L23] CALL assume_abort_if_not((R - 1) * (R - 1) < A) [L7] COND TRUE !cond [L23] RET assume_abort_if_not((R - 1) * (R - 1) < A) [L25] CALL assume_abort_if_not(A % 2 == 1) [L7] COND TRUE !cond [L25] RET assume_abort_if_not(A % 2 == 1) [L27] u = 2 * R + 1 [L28] v = 1 [L29] r = R * R - A [L45] CALL __VERIFIER_assert(4*A == u*u - v*v - 2*u + 2*v) [L10] COND TRUE !(cond) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 2, 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=28occurred 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: No data available, 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...