/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/trex03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:48:45,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:48:45,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:48:45,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:48:45,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:48:45,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:48:45,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:48:45,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:48:45,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:48:45,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:48:45,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:48:45,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:48:45,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:48:45,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:48:45,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:48:45,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:48:45,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:48:45,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:48:45,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:48:45,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:48:45,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:48:45,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:48:45,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:48:45,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:48:45,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:48:45,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:48:45,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:48:45,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:48:45,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:48:45,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:48:45,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:48:45,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:48:45,970 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:48:45,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:48:45,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:48:45,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:48:45,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:48:45,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:48:45,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:48:45,971 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:48:45,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:48:45,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:48:45,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:48:45,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:48:45,972 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:48:45,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:48:45,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:48:45,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:48:45,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:48:45,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:48:45,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:48:45,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:48:46,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:48:46,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:48:46,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:48:46,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:48:46,381 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:48:46,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-2.c [2021-02-23 18:48:46,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85519f12/3a399424524b473ebb8a61c249e0c6b7/FLAGb95e7f492 [2021-02-23 18:48:47,048 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:48:47,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-2.c [2021-02-23 18:48:47,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85519f12/3a399424524b473ebb8a61c249e0c6b7/FLAGb95e7f492 [2021-02-23 18:48:47,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85519f12/3a399424524b473ebb8a61c249e0c6b7 [2021-02-23 18:48:47,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:48:47,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:48:47,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:48:47,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:48:47,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:48:47,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:48:47" (1/1) ... [2021-02-23 18:48:47,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f119c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:47, skipping insertion in model container [2021-02-23 18:48:47,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:48:47" (1/1) ... [2021-02-23 18:48:47,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:48:47,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:48:47,625 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/trex03-2.c[320,333] [2021-02-23 18:48:47,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:48:47,653 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:48:47,665 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/trex03-2.c[320,333] [2021-02-23 18:48:47,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:48:47,687 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:48:47,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:47 WrapperNode [2021-02-23 18:48:47,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:48:47,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:48:47,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:48:47,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:48:47,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:47" (1/1) ... [2021-02-23 18:48:47,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:47" (1/1) ... [2021-02-23 18:48:47,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:47" (1/1) ... [2021-02-23 18:48:47,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:47" (1/1) ... [2021-02-23 18:48:47,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:47" (1/1) ... [2021-02-23 18:48:47,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:47" (1/1) ... [2021-02-23 18:48:47,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:47" (1/1) ... [2021-02-23 18:48:47,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:48:47,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:48:47,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:48:47,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:48:47,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:47" (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 [2021-02-23 18:48:47,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:48:47,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:48:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:48:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:48:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:48:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:48:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:48:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:48:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:48:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:48:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-23 18:48:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 18:48:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:48:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:48:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:48:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:48:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:48:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:48:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:48:48,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:48:48,179 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 18:48:48,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:48:48 BoogieIcfgContainer [2021-02-23 18:48:48,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:48:48,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:48:48,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:48:48,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:48:48,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:48:47" (1/3) ... [2021-02-23 18:48:48,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641ce46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:48:48, skipping insertion in model container [2021-02-23 18:48:48,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:47" (2/3) ... [2021-02-23 18:48:48,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641ce46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:48:48, skipping insertion in model container [2021-02-23 18:48:48,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:48:48" (3/3) ... [2021-02-23 18:48:48,261 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-2.c [2021-02-23 18:48:48,280 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:48:48,285 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:48:48,330 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:48:48,389 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:48:48,389 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:48:48,389 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:48:48,390 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:48:48,390 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:48:48,390 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:48:48,390 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:48:48,391 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:48:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2021-02-23 18:48:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 18:48:48,434 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:48:48,435 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] [2021-02-23 18:48:48,436 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:48:48,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:48:48,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1945788113, now seen corresponding path program 1 times [2021-02-23 18:48:48,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:48:48,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215674513] [2021-02-23 18:48:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:48:48,585 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:48:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:48,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:48,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:48,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:48,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:48,927 WARN L141 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-02-23 18:48:48,930 WARN L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-02-23 18:48:48,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:48,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:48:48,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:48,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:48:48,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:48,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:49,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:48:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:49,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:49,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:48:49,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215674513] [2021-02-23 18:48:49,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:48:49,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:48:49,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895784964] [2021-02-23 18:48:49,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:48:49,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:48:49,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:48:49,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:48:49,066 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2021-02-23 18:48:49,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:48:49,491 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-02-23 18:48:49,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:48:49,494 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2021-02-23 18:48:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:48:49,502 INFO L225 Difference]: With dead ends: 58 [2021-02-23 18:48:49,502 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 18:48:49,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:48:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 18:48:49,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 18:48:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 18:48:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 18:48:49,537 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-02-23 18:48:49,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:48:49,537 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 18:48:49,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:48:49,537 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 18:48:49,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 18:48:49,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:48:49,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 18:48:50,097 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 18:48:50,097 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 18:48:50,097 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 18:48:50,097 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 18:48:50,098 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 18:48:50,098 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:48:50,098 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 18:48:50,098 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 18:48:50,099 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-23 18:48:50,099 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 18:48:50,099 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 18:48:50,100 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 18:48:50,100 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:48:50,101 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:48:50,101 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:48:50,101 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 18:48:50,101 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 18:48:50,102 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (or (= (* (div main_~x3~0 4294967296) 4294967296) main_~x3~0) (= main_~x2~0 (* (div main_~x2~0 4294967296) 4294967296)) (= (* (div main_~x1~0 4294967296) 4294967296) main_~x1~0)) [2021-02-23 18:48:50,103 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-23 18:48:50,103 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 14 31) the Hoare annotation is: (or (= (* (div main_~x3~0 4294967296) 4294967296) main_~x3~0) (= main_~x2~0 (* (div main_~x2~0 4294967296) 4294967296)) (= (* (div main_~x1~0 4294967296) 4294967296) main_~x1~0)) [2021-02-23 18:48:50,103 INFO L192 CegarLoopUtils]: At program point L23(lines 23 24) the Hoare annotation is: true [2021-02-23 18:48:50,103 INFO L192 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: true [2021-02-23 18:48:50,103 INFO L192 CegarLoopUtils]: At program point L23-3(lines 22 24) the Hoare annotation is: true [2021-02-23 18:48:50,104 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-23 18:48:50,104 INFO L192 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: true [2021-02-23 18:48:50,104 INFO L192 CegarLoopUtils]: At program point L17-2(line 17) the Hoare annotation is: true [2021-02-23 18:48:50,104 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 14 31) the Hoare annotation is: (or (= (* (div main_~x3~0 4294967296) 4294967296) main_~x3~0) (= main_~x2~0 (* (div main_~x2~0 4294967296) 4294967296)) (= (* (div main_~x1~0 4294967296) 4294967296) main_~x1~0)) [2021-02-23 18:48:50,104 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 14 31) the Hoare annotation is: true [2021-02-23 18:48:50,105 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-23 18:48:50,105 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-23 18:48:50,105 INFO L192 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: true [2021-02-23 18:48:50,105 INFO L192 CegarLoopUtils]: At program point L22(lines 22 24) the Hoare annotation is: true [2021-02-23 18:48:50,106 INFO L192 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: true [2021-02-23 18:48:50,106 INFO L192 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: true [2021-02-23 18:48:50,106 INFO L192 CegarLoopUtils]: At program point L20-2(lines 20 27) the Hoare annotation is: true [2021-02-23 18:48:50,106 INFO L192 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: true [2021-02-23 18:48:50,106 INFO L185 CegarLoopUtils]: At program point L20-3(lines 20 27) the Hoare annotation is: (or (= (* (div main_~x3~0 4294967296) 4294967296) main_~x3~0) (= main_~x2~0 (* (div main_~x2~0 4294967296) 4294967296)) (= (* (div main_~x1~0 4294967296) 4294967296) main_~x1~0)) [2021-02-23 18:48:50,107 INFO L192 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-02-23 18:48:50,107 INFO L192 CegarLoopUtils]: At program point L18-2(line 18) the Hoare annotation is: true [2021-02-23 18:48:50,107 INFO L192 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: true [2021-02-23 18:48:50,108 INFO L192 CegarLoopUtils]: At program point L18-3(line 18) the Hoare annotation is: true [2021-02-23 18:48:50,108 INFO L192 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: true [2021-02-23 18:48:50,109 INFO L192 CegarLoopUtils]: At program point L16-3(line 16) the Hoare annotation is: true [2021-02-23 18:48:50,112 INFO L192 CegarLoopUtils]: At program point L16-4(line 16) the Hoare annotation is: true [2021-02-23 18:48:50,113 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-23 18:48:50,114 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 18:48:50,114 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:48:50,120 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 18:48:50,121 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:48:50,121 INFO L185 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 18:48:50,121 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:48:50,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:48:50 BoogieIcfgContainer [2021-02-23 18:48:50,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:48:50,152 INFO L168 Benchmark]: Toolchain (without parser) took 2716.80 ms. Allocated memory was 174.1 MB in the beginning and 232.8 MB in the end (delta: 58.7 MB). Free memory was 149.9 MB in the beginning and 139.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:48:50,154 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 174.1 MB. Free memory is still 146.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:48:50,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.54 ms. Allocated memory is still 174.1 MB. Free memory was 148.6 MB in the beginning and 139.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:48:50,156 INFO L168 Benchmark]: Boogie Preprocessor took 32.67 ms. Allocated memory is still 174.1 MB. Free memory was 139.2 MB in the beginning and 137.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:48:50,157 INFO L168 Benchmark]: RCFGBuilder took 462.65 ms. Allocated memory is still 174.1 MB. Free memory was 137.7 MB in the beginning and 121.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:48:50,159 INFO L168 Benchmark]: TraceAbstraction took 1956.26 ms. Allocated memory was 174.1 MB in the beginning and 232.8 MB in the end (delta: 58.7 MB). Free memory was 121.1 MB in the beginning and 139.8 MB in the end (delta: -18.7 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:48:50,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 174.1 MB. Free memory is still 146.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 243.54 ms. Allocated memory is still 174.1 MB. Free memory was 148.6 MB in the beginning and 139.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.67 ms. Allocated memory is still 174.1 MB. Free memory was 139.2 MB in the beginning and 137.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 462.65 ms. Allocated memory is still 174.1 MB. Free memory was 137.7 MB in the beginning and 121.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1956.26 ms. Allocated memory was 174.1 MB in the beginning and 232.8 MB in the end (delta: 58.7 MB). Free memory was 121.1 MB in the beginning and 139.8 MB in the end (delta: -18.7 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: (x3 / 4294967296 * 4294967296 == x3 || x2 == x2 / 4294967296 * 4294967296) || x1 / 4294967296 * 4294967296 == x1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 38 SDslu, 48 SDs, 0 SdLazy, 97 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 48 LocationsWithAnnotation, 55 PreInvPairs, 63 NumberOfFragments, 189 HoareAnnotationTreeSize, 55 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 48 FomulaSimplificationsInter, 957 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...