/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-invgen/nest-if3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:48:48,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:48:48,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:48:48,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:48:48,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:48:48,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:48:48,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:48:48,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:48:48,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:48:48,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:48:48,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:48:48,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:48:48,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:48:48,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:48:48,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:48:48,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:48:48,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:48:48,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:48:48,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:48:48,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:48:48,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:48:48,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:48:48,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:48:48,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:48:48,889 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:48:48,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:48:48,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:48:48,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:48:48,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:48:48,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:48:48,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:48:48,891 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:48:48,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:48:48,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:48:48,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:48:48,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:48:48,892 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:48:48,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:48:48,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:48:48,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:48:48,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:48:48,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:48:48,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:48:48,894 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:48:48,894 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:48:49,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:48:49,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:48:49,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:48:49,351 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:48:49,352 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:48:49,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nest-if3.i [2021-02-24 04:48:49,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8a78bc1/c8c3d53f31754695ade00461beda603d/FLAG3227ec2de [2021-02-24 04:48:50,173 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:48:50,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nest-if3.i [2021-02-24 04:48:50,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8a78bc1/c8c3d53f31754695ade00461beda603d/FLAG3227ec2de [2021-02-24 04:48:50,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8a78bc1/c8c3d53f31754695ade00461beda603d [2021-02-24 04:48:50,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:48:50,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:48:50,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:48:50,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:48:50,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:48:50,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:48:50" (1/1) ... [2021-02-24 04:48:50,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c4c751e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:48:50, skipping insertion in model container [2021-02-24 04:48:50,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:48:50" (1/1) ... [2021-02-24 04:48:50,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:48:50,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:48:50,729 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-invgen/nest-if3.i[893,906] [2021-02-24 04:48:50,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:48:50,752 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:48:50,766 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-invgen/nest-if3.i[893,906] [2021-02-24 04:48:50,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:48:50,787 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:48:50,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:48:50 WrapperNode [2021-02-24 04:48:50,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:48:50,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:48:50,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:48:50,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:48:50,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:48:50" (1/1) ... [2021-02-24 04:48:50,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:48:50" (1/1) ... [2021-02-24 04:48:50,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:48:50" (1/1) ... [2021-02-24 04:48:50,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:48:50" (1/1) ... [2021-02-24 04:48:50,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:48:50" (1/1) ... [2021-02-24 04:48:50,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:48:50" (1/1) ... [2021-02-24 04:48:50,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:48:50" (1/1) ... [2021-02-24 04:48:50,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:48:50,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:48:50,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:48:50,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:48:50,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:48:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:48:50,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:48:50,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:48:50,924 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:48:50,924 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:48:50,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:48:50,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:48:50,925 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:48:50,925 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:48:50,925 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 04:48:50,925 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 04:48:50,926 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:48:50,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:48:50,926 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:48:50,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:48:50,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:48:50,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:48:50,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:48:50,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:48:50,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:48:50,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:48:50,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:48:50,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:48:51,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:48:51,275 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 04:48:51,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:48:51 BoogieIcfgContainer [2021-02-24 04:48:51,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:48:51,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:48:51,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:48:51,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:48:51,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:48:50" (1/3) ... [2021-02-24 04:48:51,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726d33f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:48:51, skipping insertion in model container [2021-02-24 04:48:51,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:48:50" (2/3) ... [2021-02-24 04:48:51,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726d33f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:48:51, skipping insertion in model container [2021-02-24 04:48:51,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:48:51" (3/3) ... [2021-02-24 04:48:51,304 INFO L111 eAbstractionObserver]: Analyzing ICFG nest-if3.i [2021-02-24 04:48:51,313 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:48:51,324 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:48:51,345 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:48:51,372 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:48:51,372 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:48:51,372 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:48:51,373 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:48:51,373 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:48:51,373 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:48:51,373 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:48:51,373 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:48:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-02-24 04:48:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-24 04:48:51,401 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:48:51,402 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] [2021-02-24 04:48:51,403 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:48:51,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:48:51,410 INFO L82 PathProgramCache]: Analyzing trace with hash -24217293, now seen corresponding path program 1 times [2021-02-24 04:48:51,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:48:51,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085326223] [2021-02-24 04:48:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:48:51,510 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:48:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:51,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:51,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:51,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:51,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:51,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:51,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:51,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:51,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:51,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:51,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:51,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:51,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:51,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:48:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:51,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:51,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:48:51,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085326223] [2021-02-24 04:48:51,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:48:51,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:48:51,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893043921] [2021-02-24 04:48:51,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:48:51,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:48:51,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:48:51,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:48:51,927 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 7 states. [2021-02-24 04:48:52,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:48:52,424 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2021-02-24 04:48:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 04:48:52,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-02-24 04:48:52,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:48:52,435 INFO L225 Difference]: With dead ends: 101 [2021-02-24 04:48:52,435 INFO L226 Difference]: Without dead ends: 64 [2021-02-24 04:48:52,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-24 04:48:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-24 04:48:52,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-02-24 04:48:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-24 04:48:52,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-02-24 04:48:52,500 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 32 [2021-02-24 04:48:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:48:52,500 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-02-24 04:48:52,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:48:52,501 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-02-24 04:48:52,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-24 04:48:52,503 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:48:52,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:48:52,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:48:52,504 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:48:52,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:48:52,505 INFO L82 PathProgramCache]: Analyzing trace with hash 187440301, now seen corresponding path program 1 times [2021-02-24 04:48:52,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:48:52,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571764907] [2021-02-24 04:48:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:48:52,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:48:52,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:48:52,601 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:48:52,616 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:48:52,621 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:52,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:48:52,634 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:48:52,640 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 04:48:52,643 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 04:48:52,645 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:48:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:52,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:52,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:52,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:52,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:52,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:52,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:52,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:52,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:48:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:52,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:48:52,840 WARN L141 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-02-24 04:48:52,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:52,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:48:52,856 WARN L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-02-24 04:48:52,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:48:52,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:52,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:48:52,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:48:52,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:52,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:48:52,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:48:52,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:52,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:48:52,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 04:48:52,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:52,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:52,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:48:52,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:48:53,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:53,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:53,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:53,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:48:53,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 04:48:53,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:53,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:48:53,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:53,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 04:48:53,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:48:53,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:53,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:48:53,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:53,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:48:53,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:53,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:48:53,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:53,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:53,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571764907] [2021-02-24 04:48:53,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:48:53,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:48:53,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257287512] [2021-02-24 04:48:53,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:48:53,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:48:53,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:48:53,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:48:53,108 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 13 states. [2021-02-24 04:48:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:48:53,709 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-02-24 04:48:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 04:48:53,710 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2021-02-24 04:48:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:48:53,711 INFO L225 Difference]: With dead ends: 66 [2021-02-24 04:48:53,711 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:48:53,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-02-24 04:48:53,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:48:53,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:48:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:48:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:48:53,714 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-02-24 04:48:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:48:53,714 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:48:53,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:48:53,715 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:48:53,715 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:48:53,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:48:53,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:48:54,547 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 04:48:54,547 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 04:48:54,547 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 04:48:54,548 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 04:48:54,548 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 04:48:54,548 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:48:54,548 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:48:54,548 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 04:48:54,549 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 04:48:54,549 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 04:48:54,549 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 04:48:54,549 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-24 04:48:54,549 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 04:48:54,549 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:48:54,549 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:48:54,550 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:48:54,550 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:48:54,550 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:48:54,550 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-24 04:48:54,550 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-24 04:48:54,550 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-24 04:48:54,550 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-24 04:48:54,551 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-24 04:48:54,551 INFO L185 CegarLoopUtils]: At program point L35-3(line 35) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-24 04:48:54,551 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 04:48:54,551 INFO L185 CegarLoopUtils]: At program point L31-3(lines 31 37) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-24 04:48:54,551 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-24 04:48:54,551 INFO L185 CegarLoopUtils]: At program point L31-4(line 31) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-24 04:48:54,552 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-24 04:48:54,552 INFO L185 CegarLoopUtils]: At program point L31-5(line 31) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-24 04:48:54,552 INFO L192 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: true [2021-02-24 04:48:54,552 INFO L185 CegarLoopUtils]: At program point L31-6(lines 31 37) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 04:48:54,552 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 38) the Hoare annotation is: true [2021-02-24 04:48:54,552 INFO L192 CegarLoopUtils]: At program point L31-7(lines 24 38) the Hoare annotation is: true [2021-02-24 04:48:54,553 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-24 04:48:54,553 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 04:48:54,553 INFO L185 CegarLoopUtils]: At program point L32-3(line 32) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0) (= |main_#t~post6| main_~i~0) (< main_~i~0 main_~n~0)) [2021-02-24 04:48:54,553 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-24 04:48:54,553 INFO L185 CegarLoopUtils]: At program point L32-4(line 32) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 |main_#t~post6|) (= main_~i~0 (+ |main_#t~post6| 1))) [2021-02-24 04:48:54,553 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-24 04:48:54,554 INFO L185 CegarLoopUtils]: At program point L32-5(lines 32 34) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-24 04:48:54,554 INFO L185 CegarLoopUtils]: At program point L32-6(lines 32 34) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-24 04:48:54,554 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0) (< main_~i~0 main_~n~0)) [2021-02-24 04:48:54,554 INFO L185 CegarLoopUtils]: At program point L33-1(lines 32 34) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0) (< main_~i~0 main_~n~0)) [2021-02-24 04:48:54,554 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 04:48:54,554 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 04:48:54,555 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-24 04:48:54,555 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-24 04:48:54,555 INFO L192 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: true [2021-02-24 04:48:54,555 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 04:48:54,555 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2021-02-24 04:48:54,555 INFO L185 CegarLoopUtils]: At program point L30-1(line 30) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 04:48:54,556 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-24 04:48:54,556 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-24 04:48:54,556 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-24 04:48:54,556 INFO L185 CegarLoopUtils]: At program point L35(lines 35 36) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-24 04:48:54,556 INFO L185 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-24 04:48:54,556 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (forall ((v_main_~i~0_15 Int)) (let ((.cse0 (<= 1 v_main_~i~0_15))) (or (not .cse0) (not (= |__VERIFIER_assert_#in~cond| (ite .cse0 1 0))) (not (< v_main_~i~0_15 main_~n~0))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2021-02-24 04:48:54,557 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-24 04:48:54,557 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (forall ((v_main_~i~0_15 Int)) (let ((.cse0 (<= 1 v_main_~i~0_15))) (or (not .cse0) (not (= |__VERIFIER_assert_#in~cond| (ite .cse0 1 0))) (not (< v_main_~i~0_15 main_~n~0))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2021-02-24 04:48:54,557 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (forall ((v_main_~i~0_15 Int)) (let ((.cse0 (<= 1 v_main_~i~0_15))) (or (not .cse0) (not (= |__VERIFIER_assert_#in~cond| (ite .cse0 1 0))) (not (< v_main_~i~0_15 main_~n~0))))) [2021-02-24 04:48:54,557 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (forall ((v_main_~i~0_15 Int)) (let ((.cse0 (<= 1 v_main_~i~0_15))) (or (not .cse0) (not (= |__VERIFIER_assert_#in~cond| (ite .cse0 1 0))) (not (< v_main_~i~0_15 main_~n~0))))) [2021-02-24 04:48:54,558 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (forall ((v_main_~i~0_15 Int)) (let ((.cse0 (<= 1 v_main_~i~0_15))) (or (not .cse0) (not (= |__VERIFIER_assert_#in~cond| (ite .cse0 1 0))) (not (< v_main_~i~0_15 main_~n~0))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2021-02-24 04:48:54,558 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (forall ((v_main_~i~0_15 Int)) (let ((.cse0 (<= 1 v_main_~i~0_15))) (or (not .cse0) (not (= |__VERIFIER_assert_#in~cond| (ite .cse0 1 0))) (not (< v_main_~i~0_15 main_~n~0))))) [2021-02-24 04:48:54,575 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-24 04:48:54,577 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-24 04:48:54,577 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-24 04:48:54,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:48:54 BoogieIcfgContainer [2021-02-24 04:48:54,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:48:54,581 INFO L168 Benchmark]: Toolchain (without parser) took 4047.74 ms. Allocated memory was 157.3 MB in the beginning and 223.3 MB in the end (delta: 66.1 MB). Free memory was 134.7 MB in the beginning and 155.1 MB in the end (delta: -20.4 MB). Peak memory consumption was 122.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:48:54,582 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 131.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:48:54,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.80 ms. Allocated memory is still 157.3 MB. Free memory was 133.6 MB in the beginning and 124.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:48:54,583 INFO L168 Benchmark]: Boogie Preprocessor took 36.92 ms. Allocated memory is still 157.3 MB. Free memory was 123.9 MB in the beginning and 122.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:48:54,584 INFO L168 Benchmark]: RCFGBuilder took 451.66 ms. Allocated memory is still 157.3 MB. Free memory was 122.3 MB in the beginning and 140.0 MB in the end (delta: -17.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:48:54,585 INFO L168 Benchmark]: TraceAbstraction took 3296.05 ms. Allocated memory was 157.3 MB in the beginning and 223.3 MB in the end (delta: 66.1 MB). Free memory was 139.6 MB in the beginning and 155.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 127.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:48:54,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 131.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.80 ms. Allocated memory is still 157.3 MB. Free memory was 133.6 MB in the beginning and 124.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.92 ms. Allocated memory is still 157.3 MB. Free memory was 123.9 MB in the beginning and 122.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 451.66 ms. Allocated memory is still 157.3 MB. Free memory was 122.3 MB in the beginning and 140.0 MB in the end (delta: -17.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3296.05 ms. Allocated memory was 157.3 MB in the beginning and 223.3 MB in the end (delta: 66.1 MB). Free memory was 139.6 MB in the beginning and 155.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 127.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 32]: Loop Invariant Derived loop invariant: 1 <= l && 1 <= i - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 <= l - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert [2021-02-24 04:48:54,596 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-24 04:48:54,597 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-24 04:48:54,597 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-24 04:48:54,597 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-24 04:48:54,598 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-24 04:48:54,598 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] Derived contract for procedure __VERIFIER_assert: (forall v_main_~i~0_15 : int :: (!(1 <= v_main_~i~0_15) || !(\old(cond) == (if 1 <= v_main_~i~0_15 then 1 else 0))) || !(v_main_~i~0_15 < n)) || \old(cond) == cond - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 101 SDtfs, 186 SDslu, 120 SDs, 0 SdLazy, 444 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 54 LocationsWithAnnotation, 68 PreInvPairs, 111 NumberOfFragments, 307 HoareAnnotationTreeSize, 68 FomulaSimplifications, 1806 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 54 FomulaSimplificationsInter, 1785 FormulaSimplificationTreeSizeReductionInter, 0.5s 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...