/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/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:24:35,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:24:35,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:24:35,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:24:35,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:24:35,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:24:35,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:24:35,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:24:35,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:24:35,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:24:35,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:24:35,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:24:35,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:24:35,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:24:35,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:24:35,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:24:35,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:24:36,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:24:36,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:24:36,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:24:36,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:24:36,027 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:24:36,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:24:36,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:24:36,032 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:24:36,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:24:36,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:24:36,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:24:36,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:24:36,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:24:36,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:24:36,035 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:24:36,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:24:36,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:24:36,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:24:36,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:24:36,036 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:24:36,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:24:36,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:24:36,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:24:36,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:24:36,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:24:36,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:24:36,038 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:24:36,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:24:36,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:24:36,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:24:36,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:24:36,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:24:36,498 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:24:36,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2021-02-22 02:24:36,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04ec9096/7f456cf05d6045c388aad2a6a3ed7cba/FLAGe08db43ff [2021-02-22 02:24:37,185 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:24:37,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2021-02-22 02:24:37,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04ec9096/7f456cf05d6045c388aad2a6a3ed7cba/FLAGe08db43ff [2021-02-22 02:24:37,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04ec9096/7f456cf05d6045c388aad2a6a3ed7cba [2021-02-22 02:24:37,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:24:37,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:24:37,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:24:37,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:24:37,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:24:37,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:24:37" (1/1) ... [2021-02-22 02:24:37,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ebd1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:37, skipping insertion in model container [2021-02-22 02:24:37,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:24:37" (1/1) ... [2021-02-22 02:24:37,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:24:37,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:24:37,762 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/sumt3.c[403,416] [2021-02-22 02:24:37,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:24:37,787 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:24:37,802 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/sumt3.c[403,416] [2021-02-22 02:24:37,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:24:37,825 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:24:37,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:37 WrapperNode [2021-02-22 02:24:37,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:24:37,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:24:37,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:24:37,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:24:37,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:37" (1/1) ... [2021-02-22 02:24:37,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:37" (1/1) ... [2021-02-22 02:24:37,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:37" (1/1) ... [2021-02-22 02:24:37,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:37" (1/1) ... [2021-02-22 02:24:37,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:37" (1/1) ... [2021-02-22 02:24:37,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:37" (1/1) ... [2021-02-22 02:24:37,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:37" (1/1) ... [2021-02-22 02:24:37,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:24:37,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:24:37,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:24:37,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:24:37,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:37" (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 [2021-02-22 02:24:37,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:24:37,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:24:37,987 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:24:37,987 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:24:37,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:24:37,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:24:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:24:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:24:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:24:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:24:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:24:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:24:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-22 02:24:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:24:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:24:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:24:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:24:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:24:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:24:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:24:38,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:24:38,400 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 02:24:38,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:24:38 BoogieIcfgContainer [2021-02-22 02:24:38,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:24:38,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:24:38,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:24:38,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:24:38,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:24:37" (1/3) ... [2021-02-22 02:24:38,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c5e7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:24:38, skipping insertion in model container [2021-02-22 02:24:38,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:37" (2/3) ... [2021-02-22 02:24:38,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c5e7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:24:38, skipping insertion in model container [2021-02-22 02:24:38,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:24:38" (3/3) ... [2021-02-22 02:24:38,415 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt3.c [2021-02-22 02:24:38,423 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:24:38,429 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:24:38,449 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:24:38,476 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:24:38,477 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:24:38,477 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:24:38,477 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:24:38,477 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:24:38,478 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:24:38,478 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:24:38,478 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:24:38,496 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2021-02-22 02:24:38,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-22 02:24:38,506 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:24:38,507 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] [2021-02-22 02:24:38,508 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:24:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:24:38,515 INFO L82 PathProgramCache]: Analyzing trace with hash 264394004, now seen corresponding path program 1 times [2021-02-22 02:24:38,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:24:38,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249235815] [2021-02-22 02:24:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:24:38,665 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:24:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:24:38,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:38,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:38,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:38,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:24:38,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:38,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 02:24:38,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:38,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 02:24:38,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:38,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-22 02:24:39,037 WARN L141 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size [2021-02-22 02:24:39,044 WARN L147 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size 52 [2021-02-22 02:24:39,094 WARN L141 QuantifierPusher]: treesize reduction 23, result has 80.7 percent of original size [2021-02-22 02:24:39,099 WARN L147 QuantifierPusher]: treesize reduction 23, result has 80.7 percent of original size 96 [2021-02-22 02:24:39,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:39,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:24:39,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:39,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:24:39,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:39,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:39,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:24:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:24:39,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:39,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:24:39,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249235815] [2021-02-22 02:24:39,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:24:39,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 02:24:39,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231442364] [2021-02-22 02:24:39,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 02:24:39,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:24:39,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 02:24:39,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:24:39,271 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 9 states. [2021-02-22 02:24:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:24:39,914 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2021-02-22 02:24:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 02:24:39,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2021-02-22 02:24:39,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:24:39,926 INFO L225 Difference]: With dead ends: 76 [2021-02-22 02:24:39,927 INFO L226 Difference]: Without dead ends: 40 [2021-02-22 02:24:39,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-02-22 02:24:39,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-22 02:24:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-02-22 02:24:39,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-22 02:24:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-02-22 02:24:39,981 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 30 [2021-02-22 02:24:39,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:24:39,982 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-02-22 02:24:39,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 02:24:39,982 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-02-22 02:24:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-22 02:24:39,984 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:24:39,984 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] [2021-02-22 02:24:39,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:24:39,984 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:24:39,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:24:39,986 INFO L82 PathProgramCache]: Analyzing trace with hash -902518074, now seen corresponding path program 1 times [2021-02-22 02:24:39,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:24:39,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349631052] [2021-02-22 02:24:39,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:24:40,627 WARN L202 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2021-02-22 02:24:40,637 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) [2021-02-22 02:24:40,642 INFO L168 Benchmark]: Toolchain (without parser) took 3062.00 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 132.3 MB in the beginning and 80.9 MB in the end (delta: 51.4 MB). Peak memory consumption was 89.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:24:40,643 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:24:40,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.76 ms. Allocated memory is still 155.2 MB. Free memory was 131.1 MB in the beginning and 121.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:24:40,645 INFO L168 Benchmark]: Boogie Preprocessor took 48.77 ms. Allocated memory is still 155.2 MB. Free memory was 121.5 MB in the beginning and 120.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:24:40,646 INFO L168 Benchmark]: RCFGBuilder took 529.38 ms. Allocated memory is still 155.2 MB. Free memory was 119.9 MB in the beginning and 104.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-22 02:24:40,647 INFO L168 Benchmark]: TraceAbstraction took 2232.64 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 103.7 MB in the beginning and 80.9 MB in the end (delta: 22.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2021-02-22 02:24:40,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 235.76 ms. Allocated memory is still 155.2 MB. Free memory was 131.1 MB in the beginning and 121.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.77 ms. Allocated memory is still 155.2 MB. Free memory was 121.5 MB in the beginning and 120.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 529.38 ms. Allocated memory is still 155.2 MB. Free memory was 119.9 MB in the beginning and 104.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2232.64 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 103.7 MB in the beginning and 80.9 MB in the end (delta: 22.8 MB). Peak memory consumption was 60.8 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...