/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/nest-if3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:24:05,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:24:05,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:24:05,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:24:05,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:24:05,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:24:05,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:24:05,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:24:05,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:24:05,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:24:05,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:24:05,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:24:05,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:24:05,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:24:05,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:24:05,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:24:05,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:24:05,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:24:05,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:24:05,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:24:05,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:24:05,884 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:24:05,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:24:05,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:24:05,893 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:24:05,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:24:05,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:24:05,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:24:05,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:24:05,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:24:05,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:24:05,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:24:05,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:24:05,898 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:24:05,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:24:05,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:24:05,899 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:24:05,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:24:05,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:24:05,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:24:05,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:24:05,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:24:05,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:24:05,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:24:06,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:24:06,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:24:06,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:24:06,433 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:24:06,435 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:24:06,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nest-if3.i [2021-02-21 21:24:06,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c52342ce6/aeecb17628364fef961fa5fa233dfcc4/FLAG66239f940 [2021-02-21 21:24:07,413 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:24:07,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nest-if3.i [2021-02-21 21:24:07,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c52342ce6/aeecb17628364fef961fa5fa233dfcc4/FLAG66239f940 [2021-02-21 21:24:07,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c52342ce6/aeecb17628364fef961fa5fa233dfcc4 [2021-02-21 21:24:07,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:24:07,721 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:24:07,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:24:07,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:24:07,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:24:07,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:24:07" (1/1) ... [2021-02-21 21:24:07,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc072c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:07, skipping insertion in model container [2021-02-21 21:24:07,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:24:07" (1/1) ... [2021-02-21 21:24:07,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:24:07,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:24:07,954 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] [2021-02-21 21:24:07,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:24:07,988 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:24:08,007 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] [2021-02-21 21:24:08,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:24:08,038 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:24:08,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:08 WrapperNode [2021-02-21 21:24:08,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:24:08,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:24:08,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:24:08,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:24:08,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:08" (1/1) ... [2021-02-21 21:24:08,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:08" (1/1) ... [2021-02-21 21:24:08,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:08" (1/1) ... [2021-02-21 21:24:08,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:08" (1/1) ... [2021-02-21 21:24:08,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:08" (1/1) ... [2021-02-21 21:24:08,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:08" (1/1) ... [2021-02-21 21:24:08,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:08" (1/1) ... [2021-02-21 21:24:08,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:24:08,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:24:08,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:24:08,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:24:08,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:08" (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 [2021-02-21 21:24:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:24:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:24:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:24:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:24:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:24:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:24:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:24:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:24:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:24:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:24:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:24:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:24:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:24:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:24:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:24:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:24:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:24:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:24:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:24:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:24:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:24:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:24:08,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:24:08,934 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 21:24:08,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:24:08 BoogieIcfgContainer [2021-02-21 21:24:08,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:24:08,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:24:08,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:24:08,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:24:08,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:24:07" (1/3) ... [2021-02-21 21:24:08,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4732b4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:24:08, skipping insertion in model container [2021-02-21 21:24:08,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:08" (2/3) ... [2021-02-21 21:24:08,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4732b4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:24:08, skipping insertion in model container [2021-02-21 21:24:08,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:24:08" (3/3) ... [2021-02-21 21:24:08,950 INFO L111 eAbstractionObserver]: Analyzing ICFG nest-if3.i [2021-02-21 21:24:08,961 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:24:08,967 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:24:08,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:24:09,033 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:24:09,033 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:24:09,033 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:24:09,034 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:24:09,034 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:24:09,034 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:24:09,034 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:24:09,034 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:24:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-02-21 21:24:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-21 21:24:09,074 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:09,075 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] [2021-02-21 21:24:09,076 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:09,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:09,085 INFO L82 PathProgramCache]: Analyzing trace with hash -24217293, now seen corresponding path program 1 times [2021-02-21 21:24:09,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:09,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777326068] [2021-02-21 21:24:09,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:09,214 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:09,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:09,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:09,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:09,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:09,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:09,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:09,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:09,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777326068] [2021-02-21 21:24:09,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:09,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 21:24:09,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397702397] [2021-02-21 21:24:09,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 21:24:09,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:09,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 21:24:09,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:24:09,875 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 7 states. [2021-02-21 21:24:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:10,876 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2021-02-21 21:24:10,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 21:24:10,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-02-21 21:24:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:10,890 INFO L225 Difference]: With dead ends: 101 [2021-02-21 21:24:10,890 INFO L226 Difference]: Without dead ends: 64 [2021-02-21 21:24:10,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:24:10,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-21 21:24:11,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-02-21 21:24:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-21 21:24:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-02-21 21:24:11,039 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 32 [2021-02-21 21:24:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:11,040 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-02-21 21:24:11,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 21:24:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-02-21 21:24:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-21 21:24:11,043 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:11,043 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] [2021-02-21 21:24:11,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:24:11,044 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:11,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:11,045 INFO L82 PathProgramCache]: Analyzing trace with hash 187440301, now seen corresponding path program 1 times [2021-02-21 21:24:11,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:11,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622544937] [2021-02-21 21:24:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:13,203 WARN L141 QuantifierPusher]: treesize reduction 46, result has 62.9 percent of original size [2021-02-21 21:24:13,243 WARN L147 QuantifierPusher]: treesize reduction 46, result has 62.9 percent of original size 78 [2021-02-21 21:24:13,244 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-21 21:24:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:13,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:13,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:13,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:13,392 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-21 21:24:13,393 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-21 21:24:13,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:13,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:13,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:13,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:13,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:13,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:13,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-02-21 21:24:13,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-02-21 21:24:13,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:13,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:13,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:24:13,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 21:24:13,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:13,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:24:13,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 21:24:13,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:13,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:24:13,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 21:24:13,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:13,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:24:13,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 21:24:13,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:13,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:24:13,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 21:24:13,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:13,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 21:24:13,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-21 21:24:13,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:13,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:24:13,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:24:13,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:13,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:13,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622544937] [2021-02-21 21:24:13,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:13,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:24:13,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75040682] [2021-02-21 21:24:13,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:24:13,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:13,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:24:13,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-02-21 21:24:13,796 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 13 states. [2021-02-21 21:24:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:14,561 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-02-21 21:24:14,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 21:24:14,562 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2021-02-21 21:24:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:14,563 INFO L225 Difference]: With dead ends: 66 [2021-02-21 21:24:14,563 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:24:14,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-02-21 21:24:14,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:24:14,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:24:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:24:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:24:14,567 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-02-21 21:24:14,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:14,567 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:24:14,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:24:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:24:14,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:24:14,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:24:14,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:24:15,722 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:24:15,724 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:24:15,724 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:24:15,724 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:24:15,727 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:24:15,727 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:15,727 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:15,728 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-21 21:24:15,728 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:24:15,729 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:24:15,729 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:24:15,729 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)|)) [2021-02-21 21:24:15,729 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:24:15,729 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:24:15,730 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:24:15,730 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:15,730 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:24:15,730 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:24:15,730 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-21 21:24:15,730 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-21 21:24:15,730 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:15,731 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:15,731 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:15,731 INFO L185 CegarLoopUtils]: At program point L35-3(line 35) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-21 21:24:15,731 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-21 21:24:15,732 INFO L185 CegarLoopUtils]: At program point L31-3(lines 31 37) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-21 21:24:15,732 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-21 21:24:15,732 INFO L185 CegarLoopUtils]: At program point L31-4(line 31) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-21 21:24:15,733 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-21 21:24:15,735 INFO L185 CegarLoopUtils]: At program point L31-5(line 31) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-21 21:24:15,735 INFO L192 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: true [2021-02-21 21:24:15,735 INFO L185 CegarLoopUtils]: At program point L31-6(lines 31 37) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-21 21:24:15,736 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 38) the Hoare annotation is: true [2021-02-21 21:24:15,736 INFO L192 CegarLoopUtils]: At program point L31-7(lines 24 38) the Hoare annotation is: true [2021-02-21 21:24:15,736 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-21 21:24:15,736 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-21 21:24:15,738 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)) [2021-02-21 21:24:15,738 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-21 21:24:15,738 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))) [2021-02-21 21:24:15,738 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-21 21:24:15,739 INFO L185 CegarLoopUtils]: At program point L32-5(lines 32 34) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-21 21:24:15,739 INFO L185 CegarLoopUtils]: At program point L32-6(lines 32 34) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-21 21:24:15,739 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)) [2021-02-21 21:24:15,739 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)) [2021-02-21 21:24:15,739 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-21 21:24:15,740 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-21 21:24:15,740 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-21 21:24:15,740 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-21 21:24:15,740 INFO L192 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: true [2021-02-21 21:24:15,740 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-21 21:24:15,740 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2021-02-21 21:24:15,741 INFO L185 CegarLoopUtils]: At program point L30-1(line 30) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-21 21:24:15,741 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-21 21:24:15,741 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-21 21:24:15,741 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-21 21:24:15,741 INFO L185 CegarLoopUtils]: At program point L35(lines 35 36) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-21 21:24:15,741 INFO L185 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-21 21:24:15,742 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)) [2021-02-21 21:24:15,742 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-21 21:24:15,742 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)) [2021-02-21 21:24:15,742 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))))) [2021-02-21 21:24:15,743 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))))) [2021-02-21 21:24:15,743 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)) [2021-02-21 21:24:15,743 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))))) [2021-02-21 21:24:15,778 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-21 21:24:15,779 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-21 21:24:15,780 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-21 21:24:15,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:24:15 BoogieIcfgContainer [2021-02-21 21:24:15,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:24:15,785 INFO L168 Benchmark]: Toolchain (without parser) took 8077.05 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 127.7 MB in the beginning and 119.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 103.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:15,786 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 114.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:24:15,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.36 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:15,788 INFO L168 Benchmark]: Boogie Preprocessor took 55.21 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:15,789 INFO L168 Benchmark]: RCFGBuilder took 840.71 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 129.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:15,790 INFO L168 Benchmark]: TraceAbstraction took 6843.38 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 129.1 MB in the beginning and 119.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 102.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:15,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 114.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 315.36 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.21 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 840.71 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 129.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6843.38 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 129.1 MB in the beginning and 119.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 102.4 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 [2021-02-21 21:24:15,804 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-21 21:24:15,805 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-21 21:24:15,805 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-21 21:24:15,806 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-21 21:24:15,806 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_15,QUANTIFIED] [2021-02-21 21:24:15,806 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: 5.5s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 101 SDtfs, 186 SDslu, 120 SDs, 0 SdLazy, 444 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.1s 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 54 LocationsWithAnnotation, 68 PreInvPairs, 111 NumberOfFragments, 307 HoareAnnotationTreeSize, 68 FomulaSimplifications, 1806 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 54 FomulaSimplificationsInter, 1785 FormulaSimplificationTreeSizeReductionInter, 0.7s 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...