/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:22:52,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:22:52,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:22:52,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 08:22:52,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 08:22:52,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 08:22:52,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 08:22:52,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 08:22:52,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 08:22:52,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 08:22:52,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 08:22:52,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 08:22:52,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:22:52,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:22:52,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:22:52,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:22:52,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:22:52,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:22:53,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:22:53,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:22:53,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:22:53,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:22:53,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:22:53,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:22:53,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 08:22:53,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 08:22:53,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 08:22:53,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 08:22:53,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 08:22:53,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 08:22:53,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 08:22:53,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 08:22:53,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 08:22:53,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 08:22:53,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 08:22:53,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 08:22:53,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 08:22:53,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 08:22:53,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:22:53,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:22:53,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:22:53,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 08:22:53,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:22:53,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:22:53,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:22:53,067 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:22:53,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:22:53,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:22:53,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:22:53,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:22:53,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:22:53,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:22:53,069 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:22:53,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:22:53,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:22:53,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:22:53,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:22:53,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:22:53,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:22:53,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:22:53,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:22:53,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:22:53,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:22:53,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:22:53,071 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:22:53,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:22:53,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:22:53,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:22:53,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:22:53,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:22:53,454 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:22:53,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound20.c [2021-05-01 08:22:53,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d521f201/1755897de7e44600bf4caddc3ceaacac/FLAGd5c92c53d [2021-05-01 08:22:54,115 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:22:54,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound20.c [2021-05-01 08:22:54,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d521f201/1755897de7e44600bf4caddc3ceaacac/FLAGd5c92c53d [2021-05-01 08:22:54,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d521f201/1755897de7e44600bf4caddc3ceaacac [2021-05-01 08:22:54,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:22:54,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:22:54,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:22:54,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:22:54,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:22:54,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:22:54" (1/1) ... [2021-05-01 08:22:54,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8ae335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:54, skipping insertion in model container [2021-05-01 08:22:54,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:22:54" (1/1) ... [2021-05-01 08:22:54,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:22:54,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:22:54,684 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-scaling/fermat2-ll_unwindbound20.c[524,537] [2021-05-01 08:22:54,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:22:54,704 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:22:54,739 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-scaling/fermat2-ll_unwindbound20.c[524,537] [2021-05-01 08:22:54,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:22:54,777 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:22:54,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:54 WrapperNode [2021-05-01 08:22:54,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:22:54,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:22:54,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:22:54,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:22:54,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:54" (1/1) ... [2021-05-01 08:22:54,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:54" (1/1) ... [2021-05-01 08:22:54,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:54" (1/1) ... [2021-05-01 08:22:54,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:54" (1/1) ... [2021-05-01 08:22:54,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:54" (1/1) ... [2021-05-01 08:22:54,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:54" (1/1) ... [2021-05-01 08:22:54,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:54" (1/1) ... [2021-05-01 08:22:54,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:22:54,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:22:54,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:22:54,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:22:54,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:54" (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 [2021-05-01 08:22:54,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:22:54,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:22:54,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:22:54,878 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 08:22:54,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:22:54,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:22:54,878 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 08:22:54,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:22:54,878 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:22:54,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:22:54,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 08:22:54,879 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 08:22:54,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:22:54,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:22:54,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:22:54,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:22:54,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:22:54,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:22:54,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:22:54,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:22:55,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:22:55,172 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 08:22:55,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:22:55 BoogieIcfgContainer [2021-05-01 08:22:55,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:22:55,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:22:55,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:22:55,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:22:55,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:22:54" (1/3) ... [2021-05-01 08:22:55,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149f1aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:22:55, skipping insertion in model container [2021-05-01 08:22:55,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:54" (2/3) ... [2021-05-01 08:22:55,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149f1aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:22:55, skipping insertion in model container [2021-05-01 08:22:55,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:22:55" (3/3) ... [2021-05-01 08:22:55,180 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound20.c [2021-05-01 08:22:55,185 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:22:55,189 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:22:55,203 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:22:55,220 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:22:55,220 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:22:55,221 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:22:55,221 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:22:55,221 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:22:55,221 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:22:55,221 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:22:55,221 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:22:55,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-01 08:22:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 08:22:55,247 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:22:55,248 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:22:55,248 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:22:55,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:22:55,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1859024204, now seen corresponding path program 1 times [2021-05-01 08:22:55,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:22:55,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876196456] [2021-05-01 08:22:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:22:55,328 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:22:55,408 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 08:22:55,408 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 08:22:55,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:22:55,432 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 08:22:55,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:22:55 BoogieIcfgContainer [2021-05-01 08:22:55,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 08:22:55,436 INFO L168 Benchmark]: Toolchain (without parser) took 887.66 ms. Allocated memory is still 220.2 MB. Free memory was 185.2 MB in the beginning and 174.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:55,437 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 220.2 MB. Free memory is still 201.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:22:55,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.36 ms. Allocated memory is still 220.2 MB. Free memory was 185.0 MB in the beginning and 203.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:55,439 INFO L168 Benchmark]: Boogie Preprocessor took 26.94 ms. Allocated memory is still 220.2 MB. Free memory was 203.3 MB in the beginning and 201.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:55,440 INFO L168 Benchmark]: RCFGBuilder took 366.57 ms. Allocated memory is still 220.2 MB. Free memory was 201.4 MB in the beginning and 186.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:55,441 INFO L168 Benchmark]: TraceAbstraction took 257.90 ms. Allocated memory is still 220.2 MB. Free memory was 186.2 MB in the beginning and 174.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:55,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 220.2 MB. Free memory is still 201.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 227.36 ms. Allocated memory is still 220.2 MB. Free memory was 185.0 MB in the beginning and 203.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.94 ms. Allocated memory is still 220.2 MB. Free memory was 203.3 MB in the beginning and 201.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 366.57 ms. Allocated memory is still 220.2 MB. Free memory was 201.4 MB in the beginning and 186.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 257.90 ms. Allocated memory is still 220.2 MB. Free memory was 186.2 MB in the beginning and 174.7 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: [L19] int counter = 0; [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) [L9] COND TRUE !cond [L26] RET assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) [L28] CALL assume_abort_if_not(A % 2 == 1) [L9] COND TRUE !cond [L28] RET assume_abort_if_not(A % 2 == 1) [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A [L48] 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, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 202.2ms, OverallIterations: 1, TraceHistogramMax: 2, EmptinessCheckTime: 17.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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...