/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt9.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:50:25,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:50:25,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:50:25,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:50:25,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:50:25,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:50:25,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:50:25,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:50:25,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:50:25,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:50:25,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:50:25,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:50:25,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:50:25,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:50:25,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:50:25,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:50:25,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:50:25,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:50:25,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:50:25,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:50:25,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:50:25,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:50:25,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:50:25,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:50:25,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:50:25,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:50:25,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:50:25,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:50:25,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:50:25,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:50:25,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:50:25,336 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:50:25,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:50:25,336 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:50:25,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:50:25,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:50:25,337 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:50:25,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:50:25,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:50:25,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:50:25,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:50:25,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:50:25,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:50:25,339 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:50:25,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:50:25,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:50:25,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:50:25,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:50:25,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:50:25,774 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:50:25,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt9.c [2021-02-24 04:50:25,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/595010f8e/39a0e905e6174e86a920b1b98678a76f/FLAGe0c891ce7 [2021-02-24 04:50:26,678 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:50:26,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt9.c [2021-02-24 04:50:26,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/595010f8e/39a0e905e6174e86a920b1b98678a76f/FLAGe0c891ce7 [2021-02-24 04:50:27,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/595010f8e/39a0e905e6174e86a920b1b98678a76f [2021-02-24 04:50:27,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:50:27,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:50:27,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:50:27,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:50:27,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:50:27,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:50:27" (1/1) ... [2021-02-24 04:50:27,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157594c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:27, skipping insertion in model container [2021-02-24 04:50:27,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:50:27" (1/1) ... [2021-02-24 04:50:27,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:50:27,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:50:27,268 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt9.c[403,416] [2021-02-24 04:50:27,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:50:27,304 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:50:27,319 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt9.c[403,416] [2021-02-24 04:50:27,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:50:27,349 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:50:27,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:27 WrapperNode [2021-02-24 04:50:27,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:50:27,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:50:27,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:50:27,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:50:27,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:27" (1/1) ... [2021-02-24 04:50:27,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:27" (1/1) ... [2021-02-24 04:50:27,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:27" (1/1) ... [2021-02-24 04:50:27,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:27" (1/1) ... [2021-02-24 04:50:27,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:27" (1/1) ... [2021-02-24 04:50:27,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:27" (1/1) ... [2021-02-24 04:50:27,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:27" (1/1) ... [2021-02-24 04:50:27,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:50:27,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:50:27,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:50:27,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:50:27,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:27" (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 [2021-02-24 04:50:27,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:50:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:50:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:50:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:50:27,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:50:27,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:50:27,518 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:50:27,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:50:27,519 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:50:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:50:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:50:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:50:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:50:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:50:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:50:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:50:27,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:50:27,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:50:27,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:50:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:50:27,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:50:27,949 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:50:27,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:50:27 BoogieIcfgContainer [2021-02-24 04:50:27,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:50:27,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:50:27,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:50:27,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:50:27,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:50:27" (1/3) ... [2021-02-24 04:50:27,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781eae31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:50:27, skipping insertion in model container [2021-02-24 04:50:27,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:27" (2/3) ... [2021-02-24 04:50:27,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781eae31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:50:27, skipping insertion in model container [2021-02-24 04:50:27,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:50:27" (3/3) ... [2021-02-24 04:50:27,962 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt9.c [2021-02-24 04:50:27,970 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:50:27,977 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:50:28,000 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:50:28,028 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:50:28,029 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:50:28,029 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:50:28,029 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:50:28,029 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:50:28,029 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:50:28,029 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:50:28,030 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:50:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2021-02-24 04:50:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:50:28,064 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:28,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:50:28,066 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:28,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:28,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1856204290, now seen corresponding path program 1 times [2021-02-24 04:50:28,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:28,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992785071] [2021-02-24 04:50:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:28,191 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:50:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:28,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:28,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:28,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:28,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:28,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:28,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:50:28,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:50:28,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:50:28,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:50:28,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:50:28,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 04:50:28,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:28,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:50:28,971 WARN L141 QuantifierPusher]: treesize reduction 4, result has 98.1 percent of original size [2021-02-24 04:50:28,985 WARN L147 QuantifierPusher]: treesize reduction 4, result has 98.1 percent of original size 210 [2021-02-24 04:50:29,152 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2021-02-24 04:50:29,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:29,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:50:29,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:29,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:50:29,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:29,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:29,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:29,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:29,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:29,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992785071] [2021-02-24 04:50:29,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:29,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-24 04:50:29,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818177901] [2021-02-24 04:50:29,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 04:50:29,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:29,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 04:50:29,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:50:29,301 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 17 states. [2021-02-24 04:50:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:30,987 INFO L93 Difference]: Finished difference Result 194 states and 267 transitions. [2021-02-24 04:50:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 04:50:30,989 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 36 [2021-02-24 04:50:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:31,002 INFO L225 Difference]: With dead ends: 194 [2021-02-24 04:50:31,003 INFO L226 Difference]: Without dead ends: 141 [2021-02-24 04:50:31,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=268, Invalid=724, Unknown=0, NotChecked=0, Total=992 [2021-02-24 04:50:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-02-24 04:50:31,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 63. [2021-02-24 04:50:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-24 04:50:31,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-02-24 04:50:31,083 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 36 [2021-02-24 04:50:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:31,084 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-02-24 04:50:31,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 04:50:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-02-24 04:50:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 04:50:31,087 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:31,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:50:31,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:50:31,088 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:31,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:31,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1088228868, now seen corresponding path program 1 times [2021-02-24 04:50:31,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:31,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777283102] [2021-02-24 04:50:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:39,704 WARN L202 SmtUtils]: Spent 8.58 s on a formula simplification. DAG size of input: 540 DAG size of output: 303 [2021-02-24 04:50:39,741 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-24 04:50:39,751 INFO L168 Benchmark]: Toolchain (without parser) took 12722.71 ms. Allocated memory was 173.0 MB in the beginning and 264.2 MB in the end (delta: 91.2 MB). Free memory was 148.7 MB in the beginning and 241.1 MB in the end (delta: -92.4 MB). Peak memory consumption was 147.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:39,752 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 173.0 MB. Free memory is still 148.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:50:39,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.06 ms. Allocated memory is still 173.0 MB. Free memory was 147.7 MB in the beginning and 137.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:39,754 INFO L168 Benchmark]: Boogie Preprocessor took 40.04 ms. Allocated memory is still 173.0 MB. Free memory was 137.7 MB in the beginning and 136.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:39,755 INFO L168 Benchmark]: RCFGBuilder took 558.86 ms. Allocated memory is still 173.0 MB. Free memory was 136.1 MB in the beginning and 116.7 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:39,756 INFO L168 Benchmark]: TraceAbstraction took 11794.33 ms. Allocated memory was 173.0 MB in the beginning and 264.2 MB in the end (delta: 91.2 MB). Free memory was 116.2 MB in the beginning and 241.1 MB in the end (delta: -124.9 MB). Peak memory consumption was 114.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:39,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 173.0 MB. Free memory is still 148.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.06 ms. Allocated memory is still 173.0 MB. Free memory was 147.7 MB in the beginning and 137.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.04 ms. Allocated memory is still 173.0 MB. Free memory was 137.7 MB in the beginning and 136.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 558.86 ms. Allocated memory is still 173.0 MB. Free memory was 136.1 MB in the beginning and 116.7 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11794.33 ms. Allocated memory was 173.0 MB in the beginning and 264.2 MB in the end (delta: 91.2 MB). Free memory was 116.2 MB in the beginning and 241.1 MB in the end (delta: -124.9 MB). Peak memory consumption was 114.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...