/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_while_int.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:23:21,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:23:21,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:23:21,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:23:21,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:23:21,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:23:21,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:23:21,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:23:21,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:23:21,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:23:21,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:23:21,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:23:21,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:23:21,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:23:21,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:23:21,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:23:21,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:23:21,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:23:21,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:23:21,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:23:21,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:23:21,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:23:21,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:23:21,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:23:21,642 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:23:21,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:23:21,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:23:21,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:23:21,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:23:21,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:23:21,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:23:21,643 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:23:21,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:23:21,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:23:21,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:23:21,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:23:21,645 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:23:21,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:23:21,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:23:21,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:23:21,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:23:21,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:23:21,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:23:21,646 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:23:21,647 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:23:22,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:23:22,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:23:22,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:23:22,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:23:22,044 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:23:22,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.i [2021-02-24 04:23:22,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f23edfc/903f587d894c426282054b9869ccf617/FLAGd8c59dd99 [2021-02-24 04:23:22,721 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:23:22,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.i [2021-02-24 04:23:22,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f23edfc/903f587d894c426282054b9869ccf617/FLAGd8c59dd99 [2021-02-24 04:23:23,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f23edfc/903f587d894c426282054b9869ccf617 [2021-02-24 04:23:23,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:23:23,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:23:23,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:23:23,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:23:23,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:23:23,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:23:23" (1/1) ... [2021-02-24 04:23:23,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fb4dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:23:23, skipping insertion in model container [2021-02-24 04:23:23,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:23:23" (1/1) ... [2021-02-24 04:23:23,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:23:23,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:23:23,346 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.i[296,309] [2021-02-24 04:23:23,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:23:23,398 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:23:23,413 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.i[296,309] [2021-02-24 04:23:23,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:23:23,435 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:23:23,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:23:23 WrapperNode [2021-02-24 04:23:23,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:23:23,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:23:23,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:23:23,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:23:23,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:23:23" (1/1) ... [2021-02-24 04:23:23,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:23:23" (1/1) ... [2021-02-24 04:23:23,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:23:23" (1/1) ... [2021-02-24 04:23:23,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:23:23" (1/1) ... [2021-02-24 04:23:23,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:23:23" (1/1) ... [2021-02-24 04:23:23,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:23:23" (1/1) ... [2021-02-24 04:23:23,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:23:23" (1/1) ... [2021-02-24 04:23:23,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:23:23,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:23:23,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:23:23,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:23:23,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:23:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:23:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:23:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:23:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:23:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-24 04:23:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2021-02-24 04:23:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:23:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:23:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:23:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:23:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:23:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-24 04:23:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2021-02-24 04:23:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:23:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:23:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:23:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:23:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:23:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:23:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:23:23,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:23:23,857 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:23:23,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:23:23 BoogieIcfgContainer [2021-02-24 04:23:23,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:23:23,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:23:23,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:23:23,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:23:23,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:23:23" (1/3) ... [2021-02-24 04:23:23,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cd670f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:23:23, skipping insertion in model container [2021-02-24 04:23:23,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:23:23" (2/3) ... [2021-02-24 04:23:23,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cd670f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:23:23, skipping insertion in model container [2021-02-24 04:23:23,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:23:23" (3/3) ... [2021-02-24 04:23:23,869 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2021-02-24 04:23:23,875 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:23:23,880 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:23:23,898 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:23:23,923 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:23:23,923 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:23:23,923 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:23:23,923 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:23:23,923 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:23:23,924 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:23:23,924 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:23:23,924 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:23:23,957 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-02-24 04:23:23,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-24 04:23:23,967 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:23:23,968 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] [2021-02-24 04:23:23,968 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:23:23,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:23:23,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1640950537, now seen corresponding path program 1 times [2021-02-24 04:23:23,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:23:23,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520652418] [2021-02-24 04:23:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:23:24,066 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:23:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:23:24,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:24,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:23:24,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:24,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:23:24,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:24,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:23:24,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:24,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:23:24,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:24,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:23:24,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:24,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:23:24,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:24,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:23:24,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:23:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:23:24,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:24,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:23:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:23:24,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520652418] [2021-02-24 04:23:24,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:23:24,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 04:23:24,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822562956] [2021-02-24 04:23:24,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 04:23:24,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:23:24,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 04:23:24,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:23:24,437 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 8 states. [2021-02-24 04:23:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:23:24,966 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-02-24 04:23:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:23:24,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2021-02-24 04:23:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:23:24,976 INFO L225 Difference]: With dead ends: 62 [2021-02-24 04:23:24,976 INFO L226 Difference]: Without dead ends: 37 [2021-02-24 04:23:24,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-02-24 04:23:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-24 04:23:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2021-02-24 04:23:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-24 04:23:25,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-02-24 04:23:25,031 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 22 [2021-02-24 04:23:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:23:25,032 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-02-24 04:23:25,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 04:23:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-02-24 04:23:25,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 04:23:25,034 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:23:25,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:23:25,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:23:25,035 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:23:25,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:23:25,036 INFO L82 PathProgramCache]: Analyzing trace with hash 394134961, now seen corresponding path program 1 times [2021-02-24 04:23:25,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:23:25,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357878490] [2021-02-24 04:23:25,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:23:25,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:23:25,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:23:25,129 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:23:25,142 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:23:25,149 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-24 04:23:25,153 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-24 04:23:25,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:23:25,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:23:25,177 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:23:25,182 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:23:25,187 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:23:25,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:23:25,197 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:23:25,200 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:23:25,202 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:23:25,203 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:23:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:23:25,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:23:25,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:23:25,322 WARN L141 QuantifierPusher]: treesize reduction 8, result has 27.3 percent of original size [2021-02-24 04:23:25,323 WARN L147 QuantifierPusher]: treesize reduction 8, result has 27.3 percent of original size 3 [2021-02-24 04:23:25,328 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:23:25,329 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:23:25,331 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:23:25,331 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:23:25,337 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:23:25,338 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:23:25,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:23:25,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:23:25,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:23:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:23:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:23:25,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:23:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:23:25,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 04:23:25,457 WARN L141 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size [2021-02-24 04:23:25,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:23:25,461 WARN L141 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-02-24 04:23:25,463 WARN L147 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size 15 [2021-02-24 04:23:25,464 WARN L147 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size 23 [2021-02-24 04:23:25,505 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-24 04:23:25,506 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-24 04:23:25,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:23:25,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:23:25,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:23:25,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:23:25,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:23:25,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:23:25,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:23:25,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:23:25,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:23:25,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:23:25,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:23:25,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:23:25,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:23:25,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:23:25,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:23:25,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:23:25,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:23:25,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:23:25,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:23:25,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:23:25,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 04:23:25,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:23:25,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:23:25,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357878490] [2021-02-24 04:23:25,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:23:25,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-24 04:23:25,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177313838] [2021-02-24 04:23:25,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 04:23:25,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:23:25,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 04:23:25,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-02-24 04:23:25,756 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 15 states. [2021-02-24 04:23:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:23:26,235 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-02-24 04:23:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:23:26,236 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2021-02-24 04:23:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:23:26,236 INFO L225 Difference]: With dead ends: 34 [2021-02-24 04:23:26,237 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:23:26,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-02-24 04:23:26,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:23:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:23:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:23:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:23:26,239 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-02-24 04:23:26,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:23:26,240 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:23:26,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 04:23:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:23:26,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:23:26,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:23:26,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:23:26,900 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 20 [2021-02-24 04:23:26,931 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 04:23:26,931 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 04:23:26,931 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 04:23:26,931 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 04:23:26,931 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 04:23:26,931 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:23:26,932 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 04:23:26,932 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:23:26,932 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 04:23:26,932 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 04:23:26,932 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 04:23:26,932 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 04:23:26,932 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:23:26,933 INFO L185 CegarLoopUtils]: At program point L20-3(lines 19 21) the Hoare annotation is: (or (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (not (= v_main_~i~0_BEFORE_CALL_1 3)) 1 0) |check_error_#in~b|)) (not (<= 1 v_main_~i~0_BEFORE_CALL_1)) (not (<= v_main_~i~0_BEFORE_CALL_1 2)))) (= |check_error_#in~b| check_error_~b)) [2021-02-24 04:23:26,933 INFO L192 CegarLoopUtils]: At program point check_errorENTRY(lines 19 21) the Hoare annotation is: true [2021-02-24 04:23:26,933 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (not (= v_main_~i~0_BEFORE_CALL_1 3)) 1 0) |check_error_#in~b|)) (not (<= 1 v_main_~i~0_BEFORE_CALL_1)) (not (<= v_main_~i~0_BEFORE_CALL_1 2)))) (= |check_error_#in~b| check_error_~b)) [2021-02-24 04:23:26,933 INFO L185 CegarLoopUtils]: At program point check_errorEXIT(lines 19 21) the Hoare annotation is: (or (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (not (= v_main_~i~0_BEFORE_CALL_1 3)) 1 0) |check_error_#in~b|)) (not (<= 1 v_main_~i~0_BEFORE_CALL_1)) (not (<= v_main_~i~0_BEFORE_CALL_1 2)))) (= |check_error_#in~b| check_error_~b)) [2021-02-24 04:23:26,933 INFO L185 CegarLoopUtils]: At program point L20-2(line 20) the Hoare annotation is: (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (not (= v_main_~i~0_BEFORE_CALL_1 3)) 1 0) |check_error_#in~b|)) (not (<= 1 v_main_~i~0_BEFORE_CALL_1)) (not (<= v_main_~i~0_BEFORE_CALL_1 2)))) [2021-02-24 04:23:26,934 INFO L192 CegarLoopUtils]: At program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: true [2021-02-24 04:23:26,934 INFO L192 CegarLoopUtils]: At program point __blast_assertEXIT(lines 6 9) the Hoare annotation is: true [2021-02-24 04:23:26,934 INFO L192 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: true [2021-02-24 04:23:26,934 INFO L192 CegarLoopUtils]: At program point __blast_assertFINAL(lines 6 9) the Hoare annotation is: true [2021-02-24 04:23:26,934 INFO L192 CegarLoopUtils]: At program point __blast_assertENTRY(lines 6 9) the Hoare annotation is: true [2021-02-24 04:23:26,934 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:23:26,935 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:23:26,935 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:23:26,935 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:23:26,935 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (and (<= 1 main_~i~0) (<= main_~i~0 2)) [2021-02-24 04:23:26,935 INFO L185 CegarLoopUtils]: At program point L31-1(lines 26 33) the Hoare annotation is: (or (and (<= 1 main_~i~0) (<= main_~i~0 2)) (= main_~i~0 0)) [2021-02-24 04:23:26,935 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2021-02-24 04:23:26,935 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (or (= main_~i~0 0) (and (<= 1 main_~i~0) (<= main_~i~0 1))) [2021-02-24 04:23:26,936 INFO L185 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: (let ((.cse0 (= |main_#t~post7| main_~i~0))) (or (and (= main_~i~0 0) .cse0) (and (<= 1 main_~i~0) .cse0 (<= main_~i~0 1)))) [2021-02-24 04:23:26,936 INFO L185 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: (and (<= |main_#t~post7| 1) (= (+ |main_#t~post7| 1) main_~i~0) (<= 0 |main_#t~post7|)) [2021-02-24 04:23:26,936 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 35) the Hoare annotation is: true [2021-02-24 04:23:26,936 INFO L192 CegarLoopUtils]: At program point L26-2(lines 26 33) the Hoare annotation is: true [2021-02-24 04:23:26,936 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 35) the Hoare annotation is: true [2021-02-24 04:23:26,953 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-24 04:23:26,954 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-24 04:23:26,954 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-24 04:23:26,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:23:26 BoogieIcfgContainer [2021-02-24 04:23:26,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:23:26,958 INFO L168 Benchmark]: Toolchain (without parser) took 3859.00 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 127.9 MB in the beginning and 131.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 101.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:23:26,959 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 125.9 MB in the end (delta: 82.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:23:26,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.24 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 117.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:23:26,961 INFO L168 Benchmark]: Boogie Preprocessor took 53.73 ms. Allocated memory is still 152.0 MB. Free memory was 117.6 MB in the beginning and 116.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:23:26,961 INFO L168 Benchmark]: RCFGBuilder took 366.16 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 103.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:23:26,962 INFO L168 Benchmark]: TraceAbstraction took 3096.50 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 102.8 MB in the beginning and 131.3 MB in the end (delta: -28.5 MB). Peak memory consumption was 76.3 MB. Max. memory is 8.0 GB. [2021-02-24 04:23:26,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 125.9 MB in the end (delta: 82.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 320.24 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 117.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.73 ms. Allocated memory is still 152.0 MB. Free memory was 117.6 MB in the beginning and 116.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 366.16 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 103.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3096.50 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 102.8 MB in the beginning and 131.3 MB in the end (delta: -28.5 MB). Peak memory consumption was 76.3 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_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 26]: Loop Invariant Derived loop invariant: (1 <= i && i <= 2) || i == 0 - ProcedureContractResult [Line: 19]: Procedure Contract for check_error [2021-02-24 04:23:26,977 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-24 04:23:26,978 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-24 04:23:26,978 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-24 04:23:26,978 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-24 04:23:26,979 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-24 04:23:26,979 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] Derived contract for procedure check_error: (forall v_main_~i~0_BEFORE_CALL_1 : int :: (!((if !(v_main_~i~0_BEFORE_CALL_1 == 3) then 1 else 0) == \old(b)) || !(1 <= v_main_~i~0_BEFORE_CALL_1)) || !(v_main_~i~0_BEFORE_CALL_1 <= 2)) || \old(b) == b - ProcedureContractResult [Line: 6]: Procedure Contract for __blast_assert Derived contract for procedure __blast_assert: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 55 SDslu, 163 SDs, 0 SdLazy, 147 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=1, 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 48 PreInvPairs, 67 NumberOfFragments, 205 HoareAnnotationTreeSize, 48 FomulaSimplifications, 288 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 957 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...