/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/array-fpi/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:07,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:07,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:07,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:20:07,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:20:07,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:20:07,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:20:07,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:20:07,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:20:07,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:20:07,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:20:07,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:20:07,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:07,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:07,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:07,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:07,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:07,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:07,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:08,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:08,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:08,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:08,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:08,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:08,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:20:08,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:08,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:08,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:08,023 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 02:20:08,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:08,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:08,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:08,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:08,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:08,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:08,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:08,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:08,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:08,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:08,039 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:08,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:08,039 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:08,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:08,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:08,040 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:08,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:08,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:08,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:08,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:08,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:08,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:08,042 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:08,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:08,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:08,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:08,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:08,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:08,475 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:08,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2021-02-22 02:20:08,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82faae26f/24c2d061ca0e4f48aafedb8b6085b5a3/FLAG2addcc7fd [2021-02-22 02:20:09,192 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:09,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c [2021-02-22 02:20:09,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82faae26f/24c2d061ca0e4f48aafedb8b6085b5a3/FLAG2addcc7fd [2021-02-22 02:20:09,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82faae26f/24c2d061ca0e4f48aafedb8b6085b5a3 [2021-02-22 02:20:09,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:09,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:09,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:09,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:09,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:09,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:09" (1/1) ... [2021-02-22 02:20:09,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f70c1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:09, skipping insertion in model container [2021-02-22 02:20:09,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:09" (1/1) ... [2021-02-22 02:20:09,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:09,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:09,850 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c[587,600] [2021-02-22 02:20:09,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:09,878 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:09,893 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c[587,600] [2021-02-22 02:20:09,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:09,917 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:09,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:09 WrapperNode [2021-02-22 02:20:09,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:09,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:09,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:09,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:09,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:09" (1/1) ... [2021-02-22 02:20:09,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:09" (1/1) ... [2021-02-22 02:20:09,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:09" (1/1) ... [2021-02-22 02:20:09,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:09" (1/1) ... [2021-02-22 02:20:09,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:09" (1/1) ... [2021-02-22 02:20:09,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:09" (1/1) ... [2021-02-22 02:20:09,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:09" (1/1) ... [2021-02-22 02:20:09,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:09,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:09,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:09,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:09,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:09" (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 02:20:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:10,072 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:20:10,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:20:10,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:10,072 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:10,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:20:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:20:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:10,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:10,503 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 02:20:10,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:10 BoogieIcfgContainer [2021-02-22 02:20:10,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:10,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:10,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:10,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:10,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:09" (1/3) ... [2021-02-22 02:20:10,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299ca02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:10, skipping insertion in model container [2021-02-22 02:20:10,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:09" (2/3) ... [2021-02-22 02:20:10,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299ca02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:10, skipping insertion in model container [2021-02-22 02:20:10,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:10" (3/3) ... [2021-02-22 02:20:10,517 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1f.c [2021-02-22 02:20:10,525 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:10,530 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:10,553 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:10,582 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:10,582 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:10,583 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:10,583 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:10,583 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:10,583 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:10,583 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:10,583 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2021-02-22 02:20:10,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 02:20:10,630 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:10,631 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, 1, 1, 1, 1, 1, 1] [2021-02-22 02:20:10,631 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:10,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1183518233, now seen corresponding path program 1 times [2021-02-22 02:20:10,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:10,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322959283] [2021-02-22 02:20:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:10,777 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:11,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:11,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:11,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:11,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:11,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-22 02:20:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:11,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:11,148 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 02:20:11,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322959283] [2021-02-22 02:20:11,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:11,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:20:11,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201726777] [2021-02-22 02:20:11,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:20:11,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:11,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:20:11,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:11,177 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2021-02-22 02:20:11,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:11,362 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2021-02-22 02:20:11,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:20:11,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-22 02:20:11,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:11,373 INFO L225 Difference]: With dead ends: 110 [2021-02-22 02:20:11,373 INFO L226 Difference]: Without dead ends: 57 [2021-02-22 02:20:11,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-22 02:20:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-22 02:20:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-22 02:20:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-02-22 02:20:11,428 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 42 [2021-02-22 02:20:11,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:11,429 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-02-22 02:20:11,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:20:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-02-22 02:20:11,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 02:20:11,432 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:11,432 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, 1, 1, 1, 1, 1, 1] [2021-02-22 02:20:11,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:11,433 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:11,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:11,438 INFO L82 PathProgramCache]: Analyzing trace with hash -232895933, now seen corresponding path program 1 times [2021-02-22 02:20:11,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:11,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430926939] [2021-02-22 02:20:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:11,445 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:11,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:11,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:20:11,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:20:11,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:11,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:11,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:11,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-22 02:20:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:11,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:11,665 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 02:20:11,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430926939] [2021-02-22 02:20:11,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:11,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:20:11,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623171163] [2021-02-22 02:20:11,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:20:11,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:11,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:20:11,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:20:11,669 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2021-02-22 02:20:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:11,855 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2021-02-22 02:20:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:20:11,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-22 02:20:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:11,858 INFO L225 Difference]: With dead ends: 83 [2021-02-22 02:20:11,858 INFO L226 Difference]: Without dead ends: 65 [2021-02-22 02:20:11,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:20:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-22 02:20:11,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-02-22 02:20:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-22 02:20:11,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-22 02:20:11,876 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 42 [2021-02-22 02:20:11,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:11,877 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-22 02:20:11,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:20:11,877 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-22 02:20:11,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-22 02:20:11,879 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:11,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:20:11,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:11,880 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:11,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:11,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1631302411, now seen corresponding path program 1 times [2021-02-22 02:20:11,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:11,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32270452] [2021-02-22 02:20:11,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:11,939 WARN L141 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-02-22 02:20:11,967 WARN L147 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size 11 [2021-02-22 02:20:11,971 WARN L141 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size [2021-02-22 02:20:11,972 WARN L147 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size 3 [2021-02-22 02:20:11,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 02:20:11,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 02:20:11,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:11,983 WARN L141 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-02-22 02:20:11,984 WARN L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-02-22 02:20:11,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 02:20:11,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 02:20:11,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:11,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:11,994 WARN L141 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-02-22 02:20:11,996 WARN L147 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size 19 [2021-02-22 02:20:11,996 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 02:20:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:12,033 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:12,071 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:12,109 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:20:12,109 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:12,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:20:12,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:12 BoogieIcfgContainer [2021-02-22 02:20:12,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:12,130 INFO L168 Benchmark]: Toolchain (without parser) took 2537.14 ms. Allocated memory was 164.6 MB in the beginning and 201.3 MB in the end (delta: 36.7 MB). Free memory was 139.9 MB in the beginning and 131.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 46.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:12,131 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 164.6 MB. Free memory is still 138.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:12,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.19 ms. Allocated memory is still 164.6 MB. Free memory was 138.8 MB in the beginning and 128.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:12,133 INFO L168 Benchmark]: Boogie Preprocessor took 40.35 ms. Allocated memory is still 164.6 MB. Free memory was 128.8 MB in the beginning and 127.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:12,134 INFO L168 Benchmark]: RCFGBuilder took 545.32 ms. Allocated memory is still 164.6 MB. Free memory was 127.2 MB in the beginning and 140.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:12,135 INFO L168 Benchmark]: TraceAbstraction took 1621.31 ms. Allocated memory was 164.6 MB in the beginning and 201.3 MB in the end (delta: 36.7 MB). Free memory was 140.2 MB in the beginning and 131.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 46.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:12,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 164.6 MB. Free memory is still 138.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 307.19 ms. Allocated memory is still 164.6 MB. Free memory was 138.8 MB in the beginning and 128.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.35 ms. Allocated memory is still 164.6 MB. Free memory was 128.8 MB in the beginning and 127.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 545.32 ms. Allocated memory is still 164.6 MB. Free memory was 127.2 MB in the beginning and 140.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1621.31 ms. Allocated memory was 164.6 MB in the beginning and 201.3 MB in the end (delta: 36.7 MB). Free memory was 140.2 MB in the beginning and 131.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 46.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i