/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/loop-acceleration/simple_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:21:44,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:21:44,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:21:44,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:21:44,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:21:44,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:21:44,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:21:44,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:21:44,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:21:44,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:21:44,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:21:44,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:21:44,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:21:44,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:21:44,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:21:44,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:21:44,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:21:44,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:21:44,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:21:44,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:21:44,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:21:44,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:21:44,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:21:44,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:21:44,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:21:44,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:21:44,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:21:44,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:21:44,546 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 02:21:44,559 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:21:44,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:21:44,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:21:44,562 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:21:44,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:21:44,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:21:44,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:21:44,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:21:44,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:21:44,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:21:44,564 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:21:44,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:21:44,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:21:44,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:21:44,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:21:44,565 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:21:44,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:21:44,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:21:44,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:21:44,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:21:44,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:21:44,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:21:44,567 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:21:44,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:21:44,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:21:44,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:21:44,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:21:44,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:21:44,994 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:21:44,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2021-02-22 02:21:45,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94ce79ab5/ebf7624c96cd478491c47977b266de19/FLAG4d0d95e07 [2021-02-22 02:21:45,680 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:21:45,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2021-02-22 02:21:45,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94ce79ab5/ebf7624c96cd478491c47977b266de19/FLAG4d0d95e07 [2021-02-22 02:21:46,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94ce79ab5/ebf7624c96cd478491c47977b266de19 [2021-02-22 02:21:46,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:21:46,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:21:46,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:46,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:21:46,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:21:46,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:46" (1/1) ... [2021-02-22 02:21:46,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435a5858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:46, skipping insertion in model container [2021-02-22 02:21:46,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:46" (1/1) ... [2021-02-22 02:21:46,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:21:46,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:21:46,272 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-2.c[322,335] [2021-02-22 02:21:46,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:46,294 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:21:46,308 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-2.c[322,335] [2021-02-22 02:21:46,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:46,328 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:21:46,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:46 WrapperNode [2021-02-22 02:21:46,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:46,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:21:46,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:21:46,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:21:46,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:46" (1/1) ... [2021-02-22 02:21:46,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:46" (1/1) ... [2021-02-22 02:21:46,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:46" (1/1) ... [2021-02-22 02:21:46,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:46" (1/1) ... [2021-02-22 02:21:46,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:46" (1/1) ... [2021-02-22 02:21:46,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:46" (1/1) ... [2021-02-22 02:21:46,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:46" (1/1) ... [2021-02-22 02:21:46,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:21:46,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:21:46,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:21:46,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:21:46,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:46" (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 02:21:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:21:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:21:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:21:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:21:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:21:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:21:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:21:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:21:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:21:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:21:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:21:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:21:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:21:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:21:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:21:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:21:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:21:46,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:21:46,923 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 02:21:46,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:46 BoogieIcfgContainer [2021-02-22 02:21:46,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:21:46,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:21:46,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:21:46,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:21:46,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:21:46" (1/3) ... [2021-02-22 02:21:46,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297687f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:46, skipping insertion in model container [2021-02-22 02:21:46,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:46" (2/3) ... [2021-02-22 02:21:46,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297687f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:46, skipping insertion in model container [2021-02-22 02:21:46,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:46" (3/3) ... [2021-02-22 02:21:46,936 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_4-2.c [2021-02-22 02:21:46,977 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:21:46,989 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:21:47,050 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:21:47,076 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:21:47,077 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:21:47,077 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:21:47,077 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:21:47,077 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:21:47,077 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:21:47,078 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:21:47,078 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:21:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2021-02-22 02:21:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-22 02:21:47,103 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:47,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:47,104 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:47,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:47,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1656760041, now seen corresponding path program 1 times [2021-02-22 02:21:47,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:47,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349726254] [2021-02-22 02:21:47,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:47,209 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:47,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:47,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:47,385 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-22 02:21:47,389 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-22 02:21:47,490 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-22 02:21:47,493 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-22 02:21:47,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:47,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:47,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:47,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:47,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:47,652 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 02:21:47,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349726254] [2021-02-22 02:21:47,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:47,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:21:47,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829089913] [2021-02-22 02:21:47,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:21:47,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:47,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:21:47,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:47,696 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2021-02-22 02:21:47,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:47,930 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2021-02-22 02:21:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:21:47,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-02-22 02:21:47,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:47,940 INFO L225 Difference]: With dead ends: 40 [2021-02-22 02:21:47,941 INFO L226 Difference]: Without dead ends: 22 [2021-02-22 02:21:47,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:21:47,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-02-22 02:21:48,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-02-22 02:21:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-02-22 02:21:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-02-22 02:21:48,023 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2021-02-22 02:21:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:48,023 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-02-22 02:21:48,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:21:48,024 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-02-22 02:21:48,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-22 02:21:48,025 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:48,025 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] [2021-02-22 02:21:48,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:21:48,026 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:48,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:48,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1871261994, now seen corresponding path program 1 times [2021-02-22 02:21:48,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:48,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259601222] [2021-02-22 02:21:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:48,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:21:48,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:21:48,176 WARN L141 QuantifierPusher]: treesize reduction 6, result has 77.8 percent of original size [2021-02-22 02:21:48,191 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-22 02:21:48,196 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:48,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-22 02:21:48,212 WARN L147 QuantifierPusher]: treesize reduction 6, result has 77.8 percent of original size 21 [2021-02-22 02:21:48,217 WARN L141 QuantifierPusher]: treesize reduction -1, result has 102.4 percent of original size [2021-02-22 02:21:48,222 WARN L147 QuantifierPusher]: treesize reduction -1, result has 102.4 percent of original size 42 [2021-02-22 02:21:48,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:21:48,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:21:48,239 WARN L141 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-02-22 02:21:48,242 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-22 02:21:48,244 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:48,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-22 02:21:48,262 WARN L147 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size 21 [2021-02-22 02:21:48,270 WARN L141 QuantifierPusher]: treesize reduction -1, result has 102.4 percent of original size [2021-02-22 02:21:48,279 WARN L147 QuantifierPusher]: treesize reduction -1, result has 102.4 percent of original size 42 [2021-02-22 02:21:48,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:21:48,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:21:48,302 WARN L141 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size [2021-02-22 02:21:48,304 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-22 02:21:48,306 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:48,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:48,316 WARN L147 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size 23 [2021-02-22 02:21:48,320 WARN L141 QuantifierPusher]: treesize reduction -1, result has 102.4 percent of original size [2021-02-22 02:21:48,325 WARN L147 QuantifierPusher]: treesize reduction -1, result has 102.4 percent of original size 42 [2021-02-22 02:21:48,326 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 02:21:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:48,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:48,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:21:48,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:21:48,589 WARN L141 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-02-22 02:21:48,590 WARN L147 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size 21 [2021-02-22 02:21:48,614 WARN L141 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-02-22 02:21:48,618 WARN L147 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size 74 [2021-02-22 02:21:48,674 WARN L141 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-02-22 02:21:48,675 WARN L147 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size 17 [2021-02-22 02:21:48,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:48,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:48,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:48,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:48,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:48,785 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 02:21:48,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:48,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-02-22 02:21:48,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-02-22 02:21:48,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:48,835 WARN L141 QuantifierPusher]: treesize reduction 16, result has 87.7 percent of original size [2021-02-22 02:21:48,849 WARN L147 QuantifierPusher]: treesize reduction 16, result has 87.7 percent of original size 114 [2021-02-22 02:21:48,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-02-22 02:21:48,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-22 02:21:48,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:21:48,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:48,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:48,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259601222] [2021-02-22 02:21:48,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:48,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 02:21:48,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639840501] [2021-02-22 02:21:48,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 02:21:48,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:48,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 02:21:48,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-02-22 02:21:48,939 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2021-02-22 02:21:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:49,213 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-02-22 02:21:49,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 02:21:49,213 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2021-02-22 02:21:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:49,214 INFO L225 Difference]: With dead ends: 27 [2021-02-22 02:21:49,214 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 02:21:49,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-02-22 02:21:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 02:21:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 02:21:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 02:21:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 02:21:49,218 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-02-22 02:21:49,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:49,218 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 02:21:49,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 02:21:49,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 02:21:49,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 02:21:49,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 02:21:49,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 02:21:49,610 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-22 02:21:49,610 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-22 02:21:49,610 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-22 02:21:49,610 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-22 02:21:49,611 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-22 02:21:49,611 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 02:21:49,611 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-22 02:21:49,611 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 02:21:49,611 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-22 02:21:49,611 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|)) [2021-02-22 02:21:49,612 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-22 02:21:49,612 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-22 02:21:49,612 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 02:21:49,612 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 02:21:49,612 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 02:21:49,612 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 02:21:49,613 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 02:21:49,613 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 12 20) the Hoare annotation is: true [2021-02-22 02:21:49,613 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 12 20) the Hoare annotation is: true [2021-02-22 02:21:49,613 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (<= main_~x~0 (* 2 (div main_~x~0 2))) [2021-02-22 02:21:49,613 INFO L185 CegarLoopUtils]: At program point L15-2(lines 15 17) the Hoare annotation is: (<= main_~x~0 (* 2 (div main_~x~0 2))) [2021-02-22 02:21:49,613 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 12 20) the Hoare annotation is: true [2021-02-22 02:21:49,614 INFO L185 CegarLoopUtils]: At program point L15-3(lines 15 17) the Hoare annotation is: (<= main_~x~0 (* 2 (div main_~x~0 2))) [2021-02-22 02:21:49,614 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-22 02:21:49,614 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-02-22 02:21:49,614 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:21:49,614 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))) [2021-02-22 02:21:49,614 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:21:49,615 INFO L192 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-02-22 02:21:49,615 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:21:49,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:21:49 BoogieIcfgContainer [2021-02-22 02:21:49,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:21:49,634 INFO L168 Benchmark]: Toolchain (without parser) took 3596.78 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.5 MB in the beginning and 125.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 70.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:49,635 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 121.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:21:49,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.32 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:49,637 INFO L168 Benchmark]: Boogie Preprocessor took 38.13 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:49,638 INFO L168 Benchmark]: RCFGBuilder took 556.96 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 102.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:49,639 INFO L168 Benchmark]: TraceAbstraction took 2704.64 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.2 MB in the beginning and 125.3 MB in the end (delta: -23.1 MB). Peak memory consumption was 45.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:49,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 121.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 273.32 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.13 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 556.96 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 102.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2704.64 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.2 MB in the beginning and 125.3 MB in the end (delta: -23.1 MB). Peak memory consumption was 45.5 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: 15]: Loop Invariant Derived loop invariant: x <= 2 * (x / 2) - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 24 SDslu, 73 SDs, 0 SdLazy, 56 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 41 PreInvPairs, 54 NumberOfFragments, 88 HoareAnnotationTreeSize, 41 FomulaSimplifications, 213 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 27 FomulaSimplificationsInter, 479 FormulaSimplificationTreeSizeReductionInter, 0.1s 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...