/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/ps5-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 08:09:59,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 08:09:59,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 08:09:59,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 08:09:59,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 08:09:59,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 08:09:59,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 08:09:59,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 08:09:59,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 08:09:59,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 08:09:59,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 08:09:59,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 08:09:59,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 08:09:59,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 08:09:59,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 08:09:59,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 08:09:59,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 08:09:59,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 08:09:59,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 08:09:59,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 08:09:59,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 08:09:59,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 08:09:59,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 08:09:59,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 08:09:59,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-16 08:09:59,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-16 08:09:59,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-16 08:09:59,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-16 08:09:59,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-16 08:09:59,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-16 08:09:59,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 08:09:59,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 08:09:59,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 08:09:59,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 08:09:59,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 08:09:59,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 08:09:59,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 08:09:59,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 08:09:59,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 08:09:59,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 08:09:59,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 08:09:59,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 08:09:59,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 08:09:59,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 08:09:59,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 08:09:59,957 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 08:09:59,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 08:09:59,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 08:09:59,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 08:09:59,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 08:09:59,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 08:09:59,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 08:09:59,959 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 08:09:59,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 08:09:59,959 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 08:09:59,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 08:09:59,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 08:09:59,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 08:09:59,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 08:09:59,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 08:09:59,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 08:09:59,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 08:09:59,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 08:09:59,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 08:09:59,961 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 08:09:59,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 08:10:00,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 08:10:00,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 08:10:00,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 08:10:00,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 08:10:00,325 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 08:10:00,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_unwindbound20.c [2021-04-16 08:10:00,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e25d823/28c6ed03b41f49499b0c7bfa6e2e77b2/FLAG63e1687e5 [2021-04-16 08:10:00,893 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 08:10:00,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_unwindbound20.c [2021-04-16 08:10:00,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e25d823/28c6ed03b41f49499b0c7bfa6e2e77b2/FLAG63e1687e5 [2021-04-16 08:10:01,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e25d823/28c6ed03b41f49499b0c7bfa6e2e77b2 [2021-04-16 08:10:01,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 08:10:01,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 08:10:01,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 08:10:01,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 08:10:01,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 08:10:01,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 08:10:01" (1/1) ... [2021-04-16 08:10:01,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5deca67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:01, skipping insertion in model container [2021-04-16 08:10:01,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 08:10:01" (1/1) ... [2021-04-16 08:10:01,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 08:10:01,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 08:10:01,432 WARN L226 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/ps5-ll_unwindbound20.c[458,471] [2021-04-16 08:10:01,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 08:10:01,455 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 08:10:01,499 WARN L226 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/ps5-ll_unwindbound20.c[458,471] [2021-04-16 08:10:01,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 08:10:01,525 INFO L208 MainTranslator]: Completed translation [2021-04-16 08:10:01,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:01 WrapperNode [2021-04-16 08:10:01,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 08:10:01,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 08:10:01,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 08:10:01,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 08:10:01,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:01" (1/1) ... [2021-04-16 08:10:01,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:01" (1/1) ... [2021-04-16 08:10:01,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:01" (1/1) ... [2021-04-16 08:10:01,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:01" (1/1) ... [2021-04-16 08:10:01,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:01" (1/1) ... [2021-04-16 08:10:01,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:01" (1/1) ... [2021-04-16 08:10:01,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:01" (1/1) ... [2021-04-16 08:10:01,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 08:10:01,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 08:10:01,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 08:10:01,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 08:10:01,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:01" (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 [2021-04-16 08:10:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 08:10:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 08:10:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 08:10:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 08:10:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 08:10:01,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 08:10:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 08:10:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 08:10:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 08:10:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 08:10:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2021-04-16 08:10:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 08:10:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 08:10:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 08:10:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 08:10:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 08:10:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 08:10:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 08:10:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 08:10:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 08:10:01,970 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 08:10:01,971 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 08:10:01,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 08:10:01 BoogieIcfgContainer [2021-04-16 08:10:01,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 08:10:01,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 08:10:01,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 08:10:01,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 08:10:01,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 08:10:01" (1/3) ... [2021-04-16 08:10:01,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157562a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 08:10:01, skipping insertion in model container [2021-04-16 08:10:01,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:01" (2/3) ... [2021-04-16 08:10:01,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157562a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 08:10:01, skipping insertion in model container [2021-04-16 08:10:01,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 08:10:01" (3/3) ... [2021-04-16 08:10:01,979 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound20.c [2021-04-16 08:10:01,984 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 08:10:01,988 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 08:10:02,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 08:10:02,023 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 08:10:02,024 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 08:10:02,024 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 08:10:02,024 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 08:10:02,024 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 08:10:02,024 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 08:10:02,024 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 08:10:02,024 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 08:10:02,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) [2021-04-16 08:10:02,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-16 08:10:02,044 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:10:02,045 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:10:02,045 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:10:02,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:10:02,050 INFO L82 PathProgramCache]: Analyzing trace with hash 21872251, now seen corresponding path program 1 times [2021-04-16 08:10:02,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:10:02,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512929711] [2021-04-16 08:10:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:10:02,131 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 08:10:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:02,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:02,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:02,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:02,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:02,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 08:10:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:02,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:02,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:02,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-04-16 08:10:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:02,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:02,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:02,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:02,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 08:10:02,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512929711] [2021-04-16 08:10:02,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 08:10:02,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 08:10:02,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048003738] [2021-04-16 08:10:02,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 08:10:02,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 08:10:02,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 08:10:02,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 08:10:02,446 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-04-16 08:10:02,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 08:10:02,588 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2021-04-16 08:10:02,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 08:10:02,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-04-16 08:10:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 08:10:02,597 INFO L225 Difference]: With dead ends: 50 [2021-04-16 08:10:02,597 INFO L226 Difference]: Without dead ends: 25 [2021-04-16 08:10:02,600 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 08:10:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-04-16 08:10:02,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-04-16 08:10:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 08:10:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-04-16 08:10:02,639 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2021-04-16 08:10:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 08:10:02,639 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-04-16 08:10:02,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-04-16 08:10:02,639 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-04-16 08:10:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-04-16 08:10:02,641 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:10:02,641 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:10:02,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 08:10:02,641 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:10:02,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:10:02,642 INFO L82 PathProgramCache]: Analyzing trace with hash -119968982, now seen corresponding path program 1 times [2021-04-16 08:10:02,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:10:02,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369409571] [2021-04-16 08:10:02,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:10:02,646 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 08:10:02,658 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-04-16 08:10:02,658 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 08:10:02,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 08:10:02,674 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-04-16 08:10:02,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 08:10:02 BoogieIcfgContainer [2021-04-16 08:10:02,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 08:10:02,676 INFO L168 Benchmark]: Toolchain (without parser) took 1391.24 ms. Allocated memory is still 205.5 MB. Free memory was 171.5 MB in the beginning and 136.1 MB in the end (delta: 35.4 MB). Peak memory consumption was 34.8 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:02,677 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 205.5 MB. Free memory is still 188.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 08:10:02,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.86 ms. Allocated memory is still 205.5 MB. Free memory was 171.3 MB in the beginning and 188.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:02,678 INFO L168 Benchmark]: Boogie Preprocessor took 44.43 ms. Allocated memory is still 205.5 MB. Free memory was 188.5 MB in the beginning and 187.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:02,678 INFO L168 Benchmark]: RCFGBuilder took 399.49 ms. Allocated memory is still 205.5 MB. Free memory was 187.0 MB in the beginning and 172.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:02,679 INFO L168 Benchmark]: TraceAbstraction took 701.19 ms. Allocated memory is still 205.5 MB. Free memory was 172.3 MB in the beginning and 136.1 MB in the end (delta: 36.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:02,681 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 205.5 MB. Free memory is still 188.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 237.86 ms. Allocated memory is still 205.5 MB. Free memory was 171.3 MB in the beginning and 188.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.43 ms. Allocated memory is still 205.5 MB. Free memory was 188.5 MB in the beginning and 187.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 399.49 ms. Allocated memory is still 205.5 MB. Free memory was 187.0 MB in the beginning and 172.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 701.19 ms. Allocated memory is still 205.5 MB. Free memory was 172.3 MB in the beginning and 136.1 MB in the end (delta: 36.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: 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: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 [L28] EXPR counter++ [L28] COND FALSE !(counter++<20) [L39] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 641.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.0ms, AutomataDifference: 177.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 10 SDslu, 4 SDs, 0 SdLazy, 14 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, 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...