/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/ps6-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:25:24,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:25:24,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:25:24,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 08:25:24,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 08:25:24,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 08:25:24,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 08:25:24,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 08:25:24,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 08:25:24,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 08:25:24,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 08:25:24,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 08:25:24,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:25:24,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:25:24,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:25:24,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:25:24,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:25:24,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:25:24,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:25:24,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:25:24,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:25:24,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:25:24,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:25:24,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:25:24,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 08:25:24,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 08:25:24,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 08:25:24,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 08:25:24,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 08:25:24,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 08:25:24,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 08:25:24,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 08:25:24,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 08:25:24,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 08:25:24,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 08:25:24,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 08:25:24,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 08:25:24,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 08:25:24,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:25:24,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:25:24,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:25:24,974 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 08:25:24,982 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:25:24,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:25:24,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:25:24,984 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:25:24,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:25:24,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:25:24,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:25:24,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:25:24,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:25:24,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:25:24,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:25:24,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:25:24,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:25:24,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:25:24,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:25:24,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:25:24,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:25:24,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:25:24,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:25:24,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:25:24,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:25:24,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:25:24,987 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:25:24,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:25:25,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:25:25,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:25:25,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:25:25,285 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:25:25,285 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:25:25,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound10.c [2021-05-01 08:25:25,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a57c7dcd/26c2f7af9bc9490c906b008bce2de31d/FLAGdebc886b2 [2021-05-01 08:25:25,732 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:25:25,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound10.c [2021-05-01 08:25:25,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a57c7dcd/26c2f7af9bc9490c906b008bce2de31d/FLAGdebc886b2 [2021-05-01 08:25:26,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a57c7dcd/26c2f7af9bc9490c906b008bce2de31d [2021-05-01 08:25:26,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:25:26,146 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:25:26,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:25:26,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:25:26,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:25:26,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:25:26" (1/1) ... [2021-05-01 08:25:26,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66748691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:25:26, skipping insertion in model container [2021-05-01 08:25:26,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:25:26" (1/1) ... [2021-05-01 08:25:26,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:25:26,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:25:26,281 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/ps6-ll_unwindbound10.c[458,471] [2021-05-01 08:25:26,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:25:26,320 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:25:26,332 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/ps6-ll_unwindbound10.c[458,471] [2021-05-01 08:25:26,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:25:26,373 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:25:26,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:25:26 WrapperNode [2021-05-01 08:25:26,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:25:26,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:25:26,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:25:26,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:25:26,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:25:26" (1/1) ... [2021-05-01 08:25:26,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:25:26" (1/1) ... [2021-05-01 08:25:26,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:25:26" (1/1) ... [2021-05-01 08:25:26,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:25:26" (1/1) ... [2021-05-01 08:25:26,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:25:26" (1/1) ... [2021-05-01 08:25:26,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:25:26" (1/1) ... [2021-05-01 08:25:26,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:25:26" (1/1) ... [2021-05-01 08:25:26,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:25:26,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:25:26,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:25:26,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:25:26,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:25:26" (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 08:25:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:25:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:25:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:25:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 08:25:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:25:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:25:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 08:25:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:25:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:25:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:25:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2021-05-01 08:25:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 08:25:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:25:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:25:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:25:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:25:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:25:26,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:25:26,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:25:26,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:25:26,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:25:26,662 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 08:25:26,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:25:26 BoogieIcfgContainer [2021-05-01 08:25:26,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:25:26,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:25:26,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:25:26,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:25:26,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:25:26" (1/3) ... [2021-05-01 08:25:26,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e34886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:25:26, skipping insertion in model container [2021-05-01 08:25:26,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:25:26" (2/3) ... [2021-05-01 08:25:26,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e34886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:25:26, skipping insertion in model container [2021-05-01 08:25:26,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:25:26" (3/3) ... [2021-05-01 08:25:26,670 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound10.c [2021-05-01 08:25:26,675 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:25:26,678 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:25:26,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:25:26,705 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:25:26,705 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:25:26,705 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:25:26,706 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:25:26,706 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:25:26,706 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:25:26,706 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:25:26,706 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:25:26,717 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) [2021-05-01 08:25:26,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-01 08:25:26,722 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:25:26,722 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:25:26,723 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:25:26,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:25:26,727 INFO L82 PathProgramCache]: Analyzing trace with hash 21872251, now seen corresponding path program 1 times [2021-05-01 08:25:26,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:25:26,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703076037] [2021-05-01 08:25:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:25:26,782 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:25:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:25:26,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:25:26,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:25:26,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:25:26,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:25:26,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:25:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:25:26,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:25:26,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:25:26,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 08:25:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:25:26,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:25:26,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:25:26,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:25:26,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:25:26,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:25:26,939 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:25:26,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703076037] [2021-05-01 08:25:26,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [703076037] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:25:26,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:25:26,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 08:25:26,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584372310] [2021-05-01 08:25:26,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 08:25:26,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:25:26,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 08:25:26,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:25:26,956 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) [2021-05-01 08:25:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:25:27,059 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2021-05-01 08:25:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 08:25:27,061 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 [2021-05-01 08:25:27,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:25:27,068 INFO L225 Difference]: With dead ends: 50 [2021-05-01 08:25:27,068 INFO L226 Difference]: Without dead ends: 25 [2021-05-01 08:25:27,071 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:25:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-01 08:25:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-05-01 08:25:27,110 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) [2021-05-01 08:25:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-05-01 08:25:27,112 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2021-05-01 08:25:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:25:27,112 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-05-01 08:25:27,112 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) [2021-05-01 08:25:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-05-01 08:25:27,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-01 08:25:27,113 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:25:27,114 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:25:27,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:25:27,114 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:25:27,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:25:27,115 INFO L82 PathProgramCache]: Analyzing trace with hash -119968982, now seen corresponding path program 1 times [2021-05-01 08:25:27,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:25:27,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092643967] [2021-05-01 08:25:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:25:27,117 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:25:27,131 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 08:25:27,132 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 08:25:27,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 08:25:27,150 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 08:25:27,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:25:27 BoogieIcfgContainer [2021-05-01 08:25:27,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 08:25:27,152 INFO L168 Benchmark]: Toolchain (without parser) took 1005.58 ms. Allocated memory is still 300.9 MB. Free memory was 266.0 MB in the beginning and 230.2 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.0 MB. Max. memory is 8.0 GB. [2021-05-01 08:25:27,152 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 300.9 MB. Free memory was 282.6 MB in the beginning and 282.5 MB in the end (delta: 142.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:25:27,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.16 ms. Allocated memory is still 300.9 MB. Free memory was 265.7 MB in the beginning and 284.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. [2021-05-01 08:25:27,153 INFO L168 Benchmark]: Boogie Preprocessor took 44.93 ms. Allocated memory is still 300.9 MB. Free memory was 284.2 MB in the beginning and 282.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 08:25:27,154 INFO L168 Benchmark]: RCFGBuilder took 243.93 ms. Allocated memory is still 300.9 MB. Free memory was 282.7 MB in the beginning and 266.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:25:27,154 INFO L168 Benchmark]: TraceAbstraction took 485.33 ms. Allocated memory is still 300.9 MB. Free memory was 266.4 MB in the beginning and 230.2 MB in the end (delta: 36.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:25:27,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 300.9 MB. Free memory was 282.6 MB in the beginning and 282.5 MB in the end (delta: 142.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 226.16 ms. Allocated memory is still 300.9 MB. Free memory was 265.7 MB in the beginning and 284.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.93 ms. Allocated memory is still 300.9 MB. Free memory was 284.2 MB in the beginning and 282.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 243.93 ms. Allocated memory is still 300.9 MB. Free memory was 282.7 MB in the beginning and 266.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 485.33 ms. Allocated memory is still 300.9 MB. Free memory was 266.4 MB in the beginning and 230.2 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++<10) [L39] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 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: 431.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.1ms, AutomataDifference: 125.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 10 SDslu, 4 SDs, 0 SdLazy, 14 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms 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: 32.0ms 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...