/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench/fermat1-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-03 00:39:02,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 00:39:02,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 00:39:02,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-03 00:39:02,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-03 00:39:02,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-03 00:39:02,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-03 00:39:02,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-03 00:39:02,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-03 00:39:02,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-03 00:39:02,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-03 00:39:02,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-03 00:39:02,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-03 00:39:02,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-03 00:39:02,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-03 00:39:02,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-03 00:39:02,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-03 00:39:02,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-03 00:39:02,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-03 00:39:02,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-03 00:39:02,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-03 00:39:02,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-03 00:39:02,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-03 00:39:02,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-03 00:39:02,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-03 00:39:02,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-03 00:39:02,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-03 00:39:02,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-03 00:39:02,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-03 00:39:02,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-03 00:39:02,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-03 00:39:02,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-03 00:39:02,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-03 00:39:02,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-03 00:39:02,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-03 00:39:02,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-03 00:39:02,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-03 00:39:02,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-03 00:39:02,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 00:39:02,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 00:39:02,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 00:39:02,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-03 00:39:02,205 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 00:39:02,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 00:39:02,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 00:39:02,211 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 00:39:02,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 00:39:02,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 00:39:02,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 00:39:02,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 00:39:02,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 00:39:02,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 00:39:02,214 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 00:39:02,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 00:39:02,214 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 00:39:02,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 00:39:02,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 00:39:02,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 00:39:02,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 00:39:02,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 00:39:02,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 00:39:02,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 00:39:02,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-03 00:39:02,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 00:39:02,216 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-03 00:39:02,216 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-03 00:39:02,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 00:39:02,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 00:39:02,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 00:39:02,615 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-03 00:39:02,615 INFO L275 PluginConnector]: CDTParser initialized [2021-05-03 00:39:02,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat1-ll.c [2021-05-03 00:39:02,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b89b1bf/b411aae051d84cceb848305c1633b070/FLAG1a2dd87c9 [2021-05-03 00:39:03,315 INFO L306 CDTParser]: Found 1 translation units. [2021-05-03 00:39:03,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat1-ll.c [2021-05-03 00:39:03,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b89b1bf/b411aae051d84cceb848305c1633b070/FLAG1a2dd87c9 [2021-05-03 00:39:03,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b89b1bf/b411aae051d84cceb848305c1633b070 [2021-05-03 00:39:03,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 00:39:03,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 00:39:03,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-03 00:39:03,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-03 00:39:03,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-03 00:39:03,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:39:03" (1/1) ... [2021-05-03 00:39:03,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a3d4022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:39:03, skipping insertion in model container [2021-05-03 00:39:03,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:39:03" (1/1) ... [2021-05-03 00:39:03,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-03 00:39:03,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-03 00:39:03,916 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat1-ll.c[535,548] [2021-05-03 00:39:03,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:39:03,946 INFO L203 MainTranslator]: Completed pre-run [2021-05-03 00:39:03,962 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat1-ll.c[535,548] [2021-05-03 00:39:03,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:39:04,008 INFO L208 MainTranslator]: Completed translation [2021-05-03 00:39:04,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:39:04 WrapperNode [2021-05-03 00:39:04,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-03 00:39:04,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 00:39:04,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 00:39:04,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 00:39:04,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:39:04" (1/1) ... [2021-05-03 00:39:04,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:39:04" (1/1) ... [2021-05-03 00:39:04,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:39:04" (1/1) ... [2021-05-03 00:39:04,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:39:04" (1/1) ... [2021-05-03 00:39:04,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:39:04" (1/1) ... [2021-05-03 00:39:04,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:39:04" (1/1) ... [2021-05-03 00:39:04,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:39:04" (1/1) ... [2021-05-03 00:39:04,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 00:39:04,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 00:39:04,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 00:39:04,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 00:39:04,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:39:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-05-03 00:39:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-03 00:39:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 00:39:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-03 00:39:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-03 00:39:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-03 00:39:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-03 00:39:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-03 00:39:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-03 00:39:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-03 00:39:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-03 00:39:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-03 00:39:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-03 00:39:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-03 00:39:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-03 00:39:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-03 00:39:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-03 00:39:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 00:39:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-03 00:39:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-03 00:39:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-03 00:39:04,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 00:39:04,599 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-03 00:39:04,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:39:04 BoogieIcfgContainer [2021-05-03 00:39:04,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 00:39:04,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 00:39:04,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 00:39:04,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 00:39:04,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.05 12:39:03" (1/3) ... [2021-05-03 00:39:04,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98ac11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:39:04, skipping insertion in model container [2021-05-03 00:39:04,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:39:04" (2/3) ... [2021-05-03 00:39:04,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98ac11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:39:04, skipping insertion in model container [2021-05-03 00:39:04,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:39:04" (3/3) ... [2021-05-03 00:39:04,609 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll.c [2021-05-03 00:39:04,614 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-03 00:39:04,635 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 00:39:04,652 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-03 00:39:04,687 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 00:39:04,687 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 00:39:04,687 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-03 00:39:04,687 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 00:39:04,687 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 00:39:04,688 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 00:39:04,688 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 00:39:04,688 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 00:39:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-03 00:39:04,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-03 00:39:04,715 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:39:04,716 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:39:04,716 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:39:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:39:04,724 INFO L82 PathProgramCache]: Analyzing trace with hash -150104916, now seen corresponding path program 1 times [2021-05-03 00:39:04,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:39:04,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947731038] [2021-05-03 00:39:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:39:04,804 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:39:04,873 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-03 00:39:04,873 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-03 00:39:04,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 00:39:04,908 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-03 00:39:04,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 12:39:04 BoogieIcfgContainer [2021-05-03 00:39:04,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 00:39:04,912 INFO L168 Benchmark]: Toolchain (without parser) took 1192.55 ms. Allocated memory is still 185.6 MB. Free memory was 151.1 MB in the beginning and 141.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. [2021-05-03 00:39:04,913 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 185.6 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-03 00:39:04,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.16 ms. Allocated memory is still 185.6 MB. Free memory was 150.9 MB in the beginning and 140.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-03 00:39:04,915 INFO L168 Benchmark]: Boogie Preprocessor took 113.67 ms. Allocated memory is still 185.6 MB. Free memory was 140.9 MB in the beginning and 169.4 MB in the end (delta: -28.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. [2021-05-03 00:39:04,916 INFO L168 Benchmark]: RCFGBuilder took 474.71 ms. Allocated memory is still 185.6 MB. Free memory was 169.0 MB in the beginning and 153.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-03 00:39:04,917 INFO L168 Benchmark]: TraceAbstraction took 305.89 ms. Allocated memory is still 185.6 MB. Free memory was 153.3 MB in the beginning and 141.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-03 00:39:04,924 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 185.6 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.16 ms. Allocated memory is still 185.6 MB. Free memory was 150.9 MB in the beginning and 140.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 113.67 ms. Allocated memory is still 185.6 MB. Free memory was 140.9 MB in the beginning and 169.4 MB in the end (delta: -28.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 474.71 ms. Allocated memory is still 185.6 MB. Free memory was 169.0 MB in the beginning and 153.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 305.89 ms. Allocated memory is still 185.6 MB. Free memory was 153.3 MB in the beginning and 141.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int A, R; [L21] long long u, v, r; [L22] A = __VERIFIER_nondet_int() [L23] R = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not((((long long) R - 1) * ((long long) R - 1)) < A) [L9] COND TRUE !cond [L24] RET assume_abort_if_not((((long long) R - 1) * ((long long) R - 1)) < A) [L26] CALL assume_abort_if_not(A % 2 == 1) [L9] COND TRUE !cond [L26] RET assume_abort_if_not(A % 2 == 1) [L28] u = ((long long) 2 * R) + 1 [L29] v = 1 [L30] r = ((long long) R * R) - A [L55] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 207.0ms, OverallIterations: 1, TraceHistogramMax: 2, EmptinessCheckTime: 13.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms 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...