/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/fermat2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-28 01:01:02,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 01:01:02,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 01:01:02,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 01:01:02,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 01:01:02,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 01:01:02,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 01:01:02,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 01:01:02,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 01:01:02,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 01:01:02,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 01:01:02,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 01:01:02,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 01:01:02,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 01:01:02,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 01:01:02,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 01:01:02,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 01:01:02,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 01:01:02,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 01:01:02,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 01:01:02,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 01:01:02,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 01:01:02,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 01:01:02,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 01:01:02,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 01:01:02,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 01:01:02,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 01:01:02,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 01:01:02,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 01:01:02,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 01:01:02,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 01:01:02,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 01:01:02,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 01:01:02,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 01:01:02,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 01:01:02,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 01:01:02,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 01:01:02,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 01:01:02,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 01:01:02,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 01:01:02,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 01:01:02,668 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 [2020-08-28 01:01:02,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 01:01:02,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 01:01:02,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 01:01:02,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 01:01:02,724 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 01:01:02,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 01:01:02,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 01:01:02,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 01:01:02,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 01:01:02,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 01:01:02,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 01:01:02,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 01:01:02,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 01:01:02,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 01:01:02,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 01:01:02,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 01:01:02,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 01:01:02,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 01:01:02,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 01:01:02,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 01:01:02,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 01:01:02,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 01:01:02,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 01:01:02,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 01:01:02,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 01:01:02,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 01:01:02,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 01:01:02,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 01:01:02,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 01:01:02,730 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=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-28 01:01:03,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 01:01:03,266 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 01:01:03,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 01:01:03,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 01:01:03,274 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 01:01:03,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat2.c [2020-08-28 01:01:03,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e3582ae8/6c6c554f333b466590fcb48a91f64b7c/FLAG0b16ea5bc [2020-08-28 01:01:03,939 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 01:01:03,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/fermat2.c [2020-08-28 01:01:03,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e3582ae8/6c6c554f333b466590fcb48a91f64b7c/FLAG0b16ea5bc [2020-08-28 01:01:04,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e3582ae8/6c6c554f333b466590fcb48a91f64b7c [2020-08-28 01:01:04,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 01:01:04,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 01:01:04,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 01:01:04,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 01:01:04,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 01:01:04,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 01:01:04" (1/1) ... [2020-08-28 01:01:04,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a18185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 01:01:04, skipping insertion in model container [2020-08-28 01:01:04,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 01:01:04" (1/1) ... [2020-08-28 01:01:04,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 01:01:04,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 01:01:04,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 01:01:04,549 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 01:01:04,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 01:01:04,607 INFO L208 MainTranslator]: Completed translation [2020-08-28 01:01:04,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 01:01:04 WrapperNode [2020-08-28 01:01:04,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 01:01:04,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 01:01:04,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 01:01:04,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 01:01:04,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 01:01:04" (1/1) ... [2020-08-28 01:01:04,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 01:01:04" (1/1) ... [2020-08-28 01:01:04,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 01:01:04" (1/1) ... [2020-08-28 01:01:04,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 01:01:04" (1/1) ... [2020-08-28 01:01:04,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 01:01:04" (1/1) ... [2020-08-28 01:01:04,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 01:01:04" (1/1) ... [2020-08-28 01:01:04,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 01:01:04" (1/1) ... [2020-08-28 01:01:04,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 01:01:04,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 01:01:04,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 01:01:04,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 01:01:04,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 01:01:04" (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 [2020-08-28 01:01:04,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 01:01:04,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 01:01:04,843 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-28 01:01:04,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-28 01:01:04,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 01:01:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 01:01:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-28 01:01:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-28 01:01:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-28 01:01:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-28 01:01:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 01:01:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 01:01:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 01:01:05,111 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 01:01:05,112 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-28 01:01:05,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 01:01:05 BoogieIcfgContainer [2020-08-28 01:01:05,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 01:01:05,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 01:01:05,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 01:01:05,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 01:01:05,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 01:01:04" (1/3) ... [2020-08-28 01:01:05,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730a5db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 01:01:05, skipping insertion in model container [2020-08-28 01:01:05,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 01:01:04" (2/3) ... [2020-08-28 01:01:05,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730a5db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 01:01:05, skipping insertion in model container [2020-08-28 01:01:05,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 01:01:05" (3/3) ... [2020-08-28 01:01:05,133 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat2.c [2020-08-28 01:01:05,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 01:01:05,163 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-28 01:01:05,200 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-28 01:01:05,253 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 01:01:05,254 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 01:01:05,254 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 01:01:05,254 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 01:01:05,254 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 01:01:05,254 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 01:01:05,255 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 01:01:05,255 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 01:01:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-28 01:01:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-28 01:01:05,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 01:01:05,298 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-28 01:01:05,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 01:01:05,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 01:01:05,305 INFO L82 PathProgramCache]: Analyzing trace with hash -849943384, now seen corresponding path program 1 times [2020-08-28 01:01:05,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 01:01:05,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296113476] [2020-08-28 01:01:05,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 01:01:05,410 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-28 01:01:05,411 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-28 01:01:05,411 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-28 01:01:05,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 01:01:05,434 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-28 01:01:05,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.08 01:01:05 BoogieIcfgContainer [2020-08-28 01:01:05,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-28 01:01:05,438 INFO L168 Benchmark]: Toolchain (without parser) took 1162.53 ms. Allocated memory was 149.4 MB in the beginning and 205.0 MB in the end (delta: 55.6 MB). Free memory was 104.7 MB in the beginning and 159.5 MB in the end (delta: -54.8 MB). Peak memory consumption was 781.7 kB. Max. memory is 7.1 GB. [2020-08-28 01:01:05,445 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 149.4 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-28 01:01:05,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.67 ms. Allocated memory is still 149.4 MB. Free memory was 104.5 MB in the beginning and 94.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-28 01:01:05,447 INFO L168 Benchmark]: Boogie Preprocessor took 143.65 ms. Allocated memory was 149.4 MB in the beginning and 205.0 MB in the end (delta: 55.6 MB). Free memory was 94.7 MB in the beginning and 184.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-08-28 01:01:05,450 INFO L168 Benchmark]: RCFGBuilder took 366.14 ms. Allocated memory is still 205.0 MB. Free memory was 184.0 MB in the beginning and 170.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-08-28 01:01:05,453 INFO L168 Benchmark]: TraceAbstraction took 313.53 ms. Allocated memory is still 205.0 MB. Free memory was 169.7 MB in the beginning and 159.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-28 01:01:05,458 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 149.4 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.67 ms. Allocated memory is still 149.4 MB. Free memory was 104.5 MB in the beginning and 94.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.65 ms. Allocated memory was 149.4 MB in the beginning and 205.0 MB in the end (delta: 55.6 MB). Free memory was 94.7 MB in the beginning and 184.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.14 ms. Allocated memory is still 205.0 MB. Free memory was 184.0 MB in the beginning and 170.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 313.53 ms. Allocated memory is still 205.0 MB. Free memory was 169.7 MB in the beginning and 159.5 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...