/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-b7b32d2 [2021-02-22 01:58:27,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:58:27,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:58:27,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:58:27,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:58:27,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:58:27,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:58:27,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:58:27,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:58:27,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:58:27,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:58:27,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:58:27,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:58:27,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:58:27,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:58:27,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:58:27,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:58:27,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:58:27,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:58:27,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:58:27,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:58:27,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:58:27,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:58:27,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:58:27,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:58:27,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:58:27,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:58:27,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:58:27,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:58:27,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:58:27,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:58:27,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:58:27,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:58:27,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:58:27,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:58:27,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:58:27,634 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:58:27,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:58:27,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:58:27,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:58:27,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:58:27,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:58:27,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:58:27,636 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:58:27,636 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:58:28,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:58:28,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:58:28,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:58:28,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:58:28,067 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:58:28,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.i [2021-02-22 01:58:28,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19076bfb1/7049e8d8045e41fe887d65ba5f7ed25a/FLAG992e9b935 [2021-02-22 01:58:28,916 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:58:28,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.i [2021-02-22 01:58:28,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19076bfb1/7049e8d8045e41fe887d65ba5f7ed25a/FLAG992e9b935 [2021-02-22 01:58:29,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19076bfb1/7049e8d8045e41fe887d65ba5f7ed25a [2021-02-22 01:58:29,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:58:29,310 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:58:29,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:58:29,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:58:29,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:58:29,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:58:29" (1/1) ... [2021-02-22 01:58:29,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265a75f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29, skipping insertion in model container [2021-02-22 01:58:29,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:58:29" (1/1) ... [2021-02-22 01:58:29,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:58:29,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:58:29,550 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] [2021-02-22 01:58:29,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:58:29,581 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:58:29,594 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] [2021-02-22 01:58:29,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:58:29,612 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:58:29,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29 WrapperNode [2021-02-22 01:58:29,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:58:29,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:58:29,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:58:29,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:58:29,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29" (1/1) ... [2021-02-22 01:58:29,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29" (1/1) ... [2021-02-22 01:58:29,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29" (1/1) ... [2021-02-22 01:58:29,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29" (1/1) ... [2021-02-22 01:58:29,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29" (1/1) ... [2021-02-22 01:58:29,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29" (1/1) ... [2021-02-22 01:58:29,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29" (1/1) ... [2021-02-22 01:58:29,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:58:29,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:58:29,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:58:29,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:58:29,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:58:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:58:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:58:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:58:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-22 01:58:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2021-02-22 01:58:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:58:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:58:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:58:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:58:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:58:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-22 01:58:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2021-02-22 01:58:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:58:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:58:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:58:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:58:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:58:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:58:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:58:30,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:58:30,053 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 01:58:30,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:58:30 BoogieIcfgContainer [2021-02-22 01:58:30,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:58:30,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:58:30,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:58:30,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:58:30,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:58:29" (1/3) ... [2021-02-22 01:58:30,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b25b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:58:30, skipping insertion in model container [2021-02-22 01:58:30,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29" (2/3) ... [2021-02-22 01:58:30,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b25b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:58:30, skipping insertion in model container [2021-02-22 01:58:30,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:58:30" (3/3) ... [2021-02-22 01:58:30,083 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2021-02-22 01:58:30,105 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:58:30,117 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:58:30,165 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:58:30,250 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:58:30,253 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:58:30,253 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:58:30,254 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:58:30,254 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:58:30,254 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:58:30,254 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:58:30,254 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:58:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-02-22 01:58:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-22 01:58:30,312 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:58:30,313 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] [2021-02-22 01:58:30,313 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:58:30,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:58:30,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1640950537, now seen corresponding path program 1 times [2021-02-22 01:58:30,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:58:30,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300564946] [2021-02-22 01:58:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:58:30,432 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:58:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:30,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:30,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:30,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:30,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:58:30,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:30,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:58:30,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:30,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:58:30,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:30,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:58:30,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:30,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:58:30,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:30,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:30,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:58:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:30,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:30,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:58:30,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300564946] [2021-02-22 01:58:30,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:58:30,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:58:30,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743690068] [2021-02-22 01:58:30,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:58:30,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:58:30,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:58:30,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:58:30,896 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 8 states. [2021-02-22 01:58:31,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:58:31,376 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-02-22 01:58:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 01:58:31,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2021-02-22 01:58:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:58:31,386 INFO L225 Difference]: With dead ends: 62 [2021-02-22 01:58:31,387 INFO L226 Difference]: Without dead ends: 37 [2021-02-22 01:58:31,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:58:31,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-22 01:58:31,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2021-02-22 01:58:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-22 01:58:31,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-02-22 01:58:31,445 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 22 [2021-02-22 01:58:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:58:31,445 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-02-22 01:58:31,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:58:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-02-22 01:58:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-22 01:58:31,447 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:58:31,448 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] [2021-02-22 01:58:31,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:58:31,448 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:58:31,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:58:31,450 INFO L82 PathProgramCache]: Analyzing trace with hash 394134961, now seen corresponding path program 1 times [2021-02-22 01:58:31,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:58:31,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792658734] [2021-02-22 01:58:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:58:31,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:58:31,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:58:31,526 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-22 01:58:31,539 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-22 01:58:31,543 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-22 01:58:31,546 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-22 01:58:31,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:58:31,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:58:31,560 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-22 01:58:31,565 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-22 01:58:31,570 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:58:31,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 01:58:31,581 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-22 01:58:31,584 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-22 01:58:31,587 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-22 01:58:31,588 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 01:58:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:31,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:31,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:58:31,665 WARN L141 QuantifierPusher]: treesize reduction 8, result has 27.3 percent of original size [2021-02-22 01:58:31,666 WARN L147 QuantifierPusher]: treesize reduction 8, result has 27.3 percent of original size 3 [2021-02-22 01:58:31,672 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-22 01:58:31,673 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-22 01:58:31,678 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-22 01:58:31,679 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-22 01:58:31,685 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-22 01:58:31,686 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-22 01:58:31,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:58:31,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:58:31,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:31,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:58:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:31,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:58:31,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-22 01:58:31,764 WARN L141 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size [2021-02-22 01:58:31,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:58:31,767 WARN L141 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-02-22 01:58:31,769 WARN L147 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size 15 [2021-02-22 01:58:31,770 WARN L147 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size 23 [2021-02-22 01:58:31,799 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-22 01:58:31,800 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-22 01:58:31,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-22 01:58:31,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 01:58:31,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:58:31,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:58:31,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 01:58:31,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 01:58:31,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:58:31,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 01:58:31,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 01:58:31,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:58:31,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 01:58:31,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 01:58:31,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:58:31,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 01:58:31,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 01:58:31,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:58:31,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 01:58:31,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 01:58:31,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:58:31,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 01:58:31,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 01:58:32,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:32,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:32,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792658734] [2021-02-22 01:58:32,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:58:32,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-22 01:58:32,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743851403] [2021-02-22 01:58:32,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-22 01:58:32,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:58:32,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-22 01:58:32,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:58:32,032 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 15 states. [2021-02-22 01:58:32,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:58:32,484 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-02-22 01:58:32,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:58:32,485 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2021-02-22 01:58:32,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:58:32,486 INFO L225 Difference]: With dead ends: 34 [2021-02-22 01:58:32,486 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:58:32,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-02-22 01:58:32,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:58:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:58:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:58:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:58:32,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-02-22 01:58:32,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:58:32,489 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:58:32,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-22 01:58:32,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:58:32,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:58:32,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:58:32,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:58:33,167 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-22 01:58:33,168 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-22 01:58:33,168 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-22 01:58:33,168 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-22 01:58:33,168 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-22 01:58:33,168 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:58:33,169 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-22 01:58:33,169 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 01:58:33,169 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-22 01:58:33,169 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-22 01:58:33,169 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-22 01:58:33,169 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-22 01:58:33,170 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:58:33,170 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)) [2021-02-22 01:58:33,170 INFO L192 CegarLoopUtils]: At program point check_errorENTRY(lines 19 21) the Hoare annotation is: true [2021-02-22 01:58:33,170 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)) [2021-02-22 01:58:33,170 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)) [2021-02-22 01:58:33,171 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)))) [2021-02-22 01:58:33,171 INFO L192 CegarLoopUtils]: At program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: true [2021-02-22 01:58:33,171 INFO L192 CegarLoopUtils]: At program point __blast_assertEXIT(lines 6 9) the Hoare annotation is: true [2021-02-22 01:58:33,171 INFO L192 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: true [2021-02-22 01:58:33,171 INFO L192 CegarLoopUtils]: At program point __blast_assertFINAL(lines 6 9) the Hoare annotation is: true [2021-02-22 01:58:33,172 INFO L192 CegarLoopUtils]: At program point __blast_assertENTRY(lines 6 9) the Hoare annotation is: true [2021-02-22 01:58:33,172 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:58:33,172 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:58:33,173 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 01:58:33,173 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 01:58:33,173 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (and (<= 1 main_~i~0) (<= main_~i~0 2)) [2021-02-22 01:58:33,173 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)) [2021-02-22 01:58:33,173 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2021-02-22 01:58:33,173 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))) [2021-02-22 01:58:33,174 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)))) [2021-02-22 01:58:33,174 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|)) [2021-02-22 01:58:33,174 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 35) the Hoare annotation is: true [2021-02-22 01:58:33,174 INFO L192 CegarLoopUtils]: At program point L26-2(lines 26 33) the Hoare annotation is: true [2021-02-22 01:58:33,174 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 35) the Hoare annotation is: true [2021-02-22 01:58:33,199 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-22 01:58:33,200 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-22 01:58:33,200 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-22 01:58:33,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:58:33 BoogieIcfgContainer [2021-02-22 01:58:33,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:58:33,205 INFO L168 Benchmark]: Toolchain (without parser) took 3907.54 ms. Allocated memory was 151.0 MB in the beginning and 203.4 MB in the end (delta: 52.4 MB). Free memory was 126.5 MB in the beginning and 171.3 MB in the end (delta: -44.8 MB). Peak memory consumption was 112.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:33,206 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:58:33,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 116.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:33,207 INFO L168 Benchmark]: Boogie Preprocessor took 30.22 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:33,208 INFO L168 Benchmark]: RCFGBuilder took 410.60 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 101.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:33,209 INFO L168 Benchmark]: TraceAbstraction took 3142.03 ms. Allocated memory was 151.0 MB in the beginning and 203.4 MB in the end (delta: 52.4 MB). Free memory was 100.8 MB in the beginning and 171.3 MB in the end (delta: -70.6 MB). Peak memory consumption was 86.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:33,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 300.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 116.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.22 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 410.60 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 101.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3142.03 ms. Allocated memory was 151.0 MB in the beginning and 203.4 MB in the end (delta: 52.4 MB). Free memory was 100.8 MB in the beginning and 171.3 MB in the end (delta: -70.6 MB). Peak memory consumption was 86.6 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 [2021-02-22 01:58:33,222 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-22 01:58:33,222 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-22 01:58:33,222 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-22 01:58:33,223 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-22 01:58:33,223 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-22 01:58:33,223 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: 2.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.9s, 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s 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, 0.4s 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...