/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -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-36cd7be [2021-02-24 00:20:19,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:20:19,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:20:19,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 00:20:19,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 00:20:19,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 00:20:19,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 00:20:19,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 00:20:19,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 00:20:19,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 00:20:19,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 00:20:19,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 00:20:19,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:20:19,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:20:19,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:20:19,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:20:19,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:20:19,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:20:19,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:20:19,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:20:19,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:20:19,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:20:19,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:20:19,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:20:19,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 00:20:19,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 00:20:19,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 00:20:19,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 00:20:19,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 00:20:19,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 00:20:19,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 00:20:19,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 00:20:19,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 00:20:19,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 00:20:19,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 00:20:19,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 00:20:19,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 00:20:19,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 00:20:19,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:20:19,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:20:19,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:20:19,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:20:19,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:20:19,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:20:19,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:20:19,459 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:20:19,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:20:19,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:20:19,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:20:19,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:20:19,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:20:19,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:20:19,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:20:19,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:20:19,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:20:19,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:20:19,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:20:19,463 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:20:19,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:20:19,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:20:19,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:20:19,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:20:19,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:20:19,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:20:19,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:20:19,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:20:19,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:20:19,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:20:19,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:20:19,899 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:20:19,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nest-if3.i [2021-02-24 00:20:19,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04b08a9a5/b22765dd40b647aab2b1d6c1fc335af2/FLAG6eb9fb0ac [2021-02-24 00:20:20,631 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:20:20,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nest-if3.i [2021-02-24 00:20:20,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04b08a9a5/b22765dd40b647aab2b1d6c1fc335af2/FLAG6eb9fb0ac [2021-02-24 00:20:21,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04b08a9a5/b22765dd40b647aab2b1d6c1fc335af2 [2021-02-24 00:20:21,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:20:21,036 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:20:21,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:21,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:20:21,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:20:21,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:21" (1/1) ... [2021-02-24 00:20:21,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265096ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:21, skipping insertion in model container [2021-02-24 00:20:21,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:21" (1/1) ... [2021-02-24 00:20:21,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:20:21,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:20:21,253 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 00:20:21,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:21,278 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:20:21,293 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 00:20:21,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:21,316 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:20:21,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:21 WrapperNode [2021-02-24 00:20:21,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:21,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:20:21,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:20:21,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:20:21,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:21" (1/1) ... [2021-02-24 00:20:21,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:21" (1/1) ... [2021-02-24 00:20:21,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:21" (1/1) ... [2021-02-24 00:20:21,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:21" (1/1) ... [2021-02-24 00:20:21,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:21" (1/1) ... [2021-02-24 00:20:21,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:21" (1/1) ... [2021-02-24 00:20:21,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:21" (1/1) ... [2021-02-24 00:20:21,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:20:21,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:20:21,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:20:21,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:20:21,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:21" (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 00:20:21,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:20:21,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:20:21,470 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:20:21,470 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:20:21,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:20:21,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:20:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:20:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:20:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 00:20:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 00:20:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:20:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:20:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:20:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:20:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:20:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:20:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:20:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:20:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:20:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:20:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:20:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:20:21,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:20:21,927 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 00:20:21,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:21 BoogieIcfgContainer [2021-02-24 00:20:21,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:20:21,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:20:21,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:20:21,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:20:21,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:20:21" (1/3) ... [2021-02-24 00:20:21,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4692b978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:21, skipping insertion in model container [2021-02-24 00:20:21,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:21" (2/3) ... [2021-02-24 00:20:21,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4692b978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:21, skipping insertion in model container [2021-02-24 00:20:21,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:21" (3/3) ... [2021-02-24 00:20:21,940 INFO L111 eAbstractionObserver]: Analyzing ICFG nest-if3.i [2021-02-24 00:20:21,948 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:20:21,953 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:20:21,974 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:20:22,002 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:20:22,002 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:20:22,002 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:20:22,002 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:20:22,003 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:20:22,003 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:20:22,003 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:20:22,003 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:20:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-02-24 00:20:22,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-24 00:20:22,031 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:22,032 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 00:20:22,032 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:22,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:22,039 INFO L82 PathProgramCache]: Analyzing trace with hash -24217293, now seen corresponding path program 1 times [2021-02-24 00:20:22,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:22,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17620018] [2021-02-24 00:20:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:22,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:22,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:22,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:22,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:22,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:22,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:22,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:22,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:22,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:22,501 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 00:20:22,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17620018] [2021-02-24 00:20:22,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:20:22,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 00:20:22,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967085328] [2021-02-24 00:20:22,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:20:22,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:22,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:20:22,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:20:22,531 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 7 states. [2021-02-24 00:20:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:23,276 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2021-02-24 00:20:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:20:23,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-02-24 00:20:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:23,287 INFO L225 Difference]: With dead ends: 101 [2021-02-24 00:20:23,288 INFO L226 Difference]: Without dead ends: 64 [2021-02-24 00:20:23,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:20:23,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-24 00:20:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-02-24 00:20:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-24 00:20:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-02-24 00:20:23,348 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 32 [2021-02-24 00:20:23,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:23,349 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-02-24 00:20:23,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:20:23,349 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-02-24 00:20:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-24 00:20:23,351 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:23,351 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 00:20:23,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:20:23,352 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:23,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:23,353 INFO L82 PathProgramCache]: Analyzing trace with hash 187440301, now seen corresponding path program 1 times [2021-02-24 00:20:23,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:23,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444930204] [2021-02-24 00:20:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:23,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:23,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:23,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:23,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:23,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:23,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:23,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:23,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:23,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:23,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:23,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 00:20:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:23,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:23,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:23,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444930204] [2021-02-24 00:20:23,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:20:23,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 00:20:23,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638683453] [2021-02-24 00:20:23,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:20:23,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:23,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:20:23,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:20:23,568 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 9 states. [2021-02-24 00:20:23,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:23,979 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-02-24 00:20:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:20:23,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2021-02-24 00:20:23,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:23,980 INFO L225 Difference]: With dead ends: 66 [2021-02-24 00:20:23,981 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:20:23,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:20:23,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:20:23,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:20:23,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:20:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:20:23,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-02-24 00:20:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:23,984 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:20:23,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:20:23,984 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:20:23,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:20:23,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:20:23,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:20:24,719 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 00:20:24,719 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 00:20:24,719 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 00:20:24,719 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 00:20:24,720 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 00:20:24,720 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:24,720 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:24,720 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 00:20:24,720 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 00:20:24,720 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 00:20:24,721 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 00:20:24,721 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 00:20:24,721 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 00:20:24,721 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:20:24,721 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:20:24,722 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:20:24,722 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:20:24,722 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:20:24,722 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-24 00:20:24,722 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-24 00:20:24,722 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:24,722 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:24,723 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:20:24,723 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 00:20:24,723 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 00:20:24,723 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 00:20:24,723 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-24 00:20:24,724 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 00:20:24,724 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-24 00:20:24,724 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 00:20:24,724 INFO L192 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: true [2021-02-24 00:20:24,724 INFO L185 CegarLoopUtils]: At program point L31-6(lines 31 37) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 00:20:24,724 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 38) the Hoare annotation is: true [2021-02-24 00:20:24,725 INFO L192 CegarLoopUtils]: At program point L31-7(lines 24 38) the Hoare annotation is: true [2021-02-24 00:20:24,725 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 00:20:24,725 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 00:20:24,725 INFO L185 CegarLoopUtils]: At program point L32-3(line 32) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0) (<= 1 |main_#t~post6|)) [2021-02-24 00:20:24,725 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-24 00:20:24,726 INFO L185 CegarLoopUtils]: At program point L32-4(line 32) the Hoare annotation is: (and (<= 2 main_~i~0) (<= 1 main_~l~0) (<= 1 |main_#t~post6|)) [2021-02-24 00:20:24,726 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-24 00:20:24,726 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 00:20:24,726 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 00:20:24,726 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-24 00:20:24,727 INFO L185 CegarLoopUtils]: At program point L33-1(lines 32 34) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-24 00:20:24,727 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 00:20:24,727 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 00:20:24,727 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-24 00:20:24,727 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-24 00:20:24,727 INFO L192 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: true [2021-02-24 00:20:24,728 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 00:20:24,728 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2021-02-24 00:20:24,728 INFO L185 CegarLoopUtils]: At program point L30-1(line 30) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-24 00:20:24,728 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-24 00:20:24,728 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-24 00:20:24,728 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-24 00:20:24,729 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 00:20:24,729 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 00:20:24,729 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:20:24,729 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-24 00:20:24,729 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:20:24,729 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:24,730 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:24,730 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:20:24,730 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:20:24,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:20:24 BoogieIcfgContainer [2021-02-24 00:20:24,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:20:24,751 INFO L168 Benchmark]: Toolchain (without parser) took 3728.37 ms. Allocated memory was 154.1 MB in the beginning and 186.6 MB in the end (delta: 32.5 MB). Free memory was 129.7 MB in the beginning and 124.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 103.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:24,752 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:20:24,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.97 ms. Allocated memory is still 154.1 MB. Free memory was 128.4 MB in the beginning and 118.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:24,754 INFO L168 Benchmark]: Boogie Preprocessor took 41.02 ms. Allocated memory is still 154.1 MB. Free memory was 118.4 MB in the beginning and 116.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:24,754 INFO L168 Benchmark]: RCFGBuilder took 570.27 ms. Allocated memory is still 154.1 MB. Free memory was 116.7 MB in the beginning and 134.8 MB in the end (delta: -18.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:24,755 INFO L168 Benchmark]: TraceAbstraction took 2817.55 ms. Allocated memory was 154.1 MB in the beginning and 186.6 MB in the end (delta: 32.5 MB). Free memory was 134.2 MB in the beginning and 124.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 108.2 MB. Max. memory is 8.0 GB. [2021-02-24 00:20:24,759 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 154.1 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.97 ms. Allocated memory is still 154.1 MB. Free memory was 128.4 MB in the beginning and 118.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.02 ms. Allocated memory is still 154.1 MB. Free memory was 118.4 MB in the beginning and 116.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 570.27 ms. Allocated memory is still 154.1 MB. Free memory was 116.7 MB in the beginning and 134.8 MB in the end (delta: -18.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2817.55 ms. Allocated memory was 154.1 MB in the beginning and 186.6 MB in the end (delta: 32.5 MB). Free memory was 134.2 MB in the beginning and 124.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 108.2 MB. Max. memory is 8.0 GB. * 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 Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 101 SDtfs, 180 SDslu, 133 SDs, 0 SdLazy, 400 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s 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, 203 HoareAnnotationTreeSize, 68 FomulaSimplifications, 1806 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 54 FomulaSimplificationsInter, 1329 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 6085 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, 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...