/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:29:06,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:29:06,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:29:06,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:29:06,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:29:06,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:29:06,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:29:06,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:29:06,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:29:06,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:29:06,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:29:06,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:29:06,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:29:06,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:29:06,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:29:06,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:29:06,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:29:06,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:29:06,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:29:06,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:29:06,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:29:07,017 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:29:07,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:29:07,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:29:07,031 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:29:07,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:29:07,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:29:07,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:29:07,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:29:07,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:29:07,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:29:07,035 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:29:07,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:29:07,037 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:29:07,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:29:07,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:29:07,039 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:29:07,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:29:07,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:29:07,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:29:07,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:29:07,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:29:07,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:29:07,043 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:29:07,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:29:07,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:29:07,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:29:07,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:29:07,869 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:29:07,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2021-02-21 21:29:08,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a983142b1/a6d7ae4e0ecf4b66aeca6130cfe3eef3/FLAG009f0427b [2021-02-21 21:29:09,141 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:29:09,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2021-02-21 21:29:09,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a983142b1/a6d7ae4e0ecf4b66aeca6130cfe3eef3/FLAG009f0427b [2021-02-21 21:29:09,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a983142b1/a6d7ae4e0ecf4b66aeca6130cfe3eef3 [2021-02-21 21:29:09,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:29:09,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:29:09,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:29:09,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:29:09,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:29:09,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:29:09" (1/1) ... [2021-02-21 21:29:09,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53455d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:09, skipping insertion in model container [2021-02-21 21:29:09,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:29:09" (1/1) ... [2021-02-21 21:29:09,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:29:09,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:29:09,845 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i[895,908] [2021-02-21 21:29:09,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:29:09,894 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:29:09,924 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i[895,908] [2021-02-21 21:29:09,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:29:09,964 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:29:09,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:09 WrapperNode [2021-02-21 21:29:09,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:29:09,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:29:09,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:29:09,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:29:09,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:09" (1/1) ... [2021-02-21 21:29:09,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:09" (1/1) ... [2021-02-21 21:29:10,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:09" (1/1) ... [2021-02-21 21:29:10,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:09" (1/1) ... [2021-02-21 21:29:10,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:09" (1/1) ... [2021-02-21 21:29:10,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:09" (1/1) ... [2021-02-21 21:29:10,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:09" (1/1) ... [2021-02-21 21:29:10,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:29:10,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:29:10,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:29:10,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:29:10,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:29:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:29:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:29:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:29:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:29:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:29:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:29:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:29:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:29:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:29:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:29:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:29:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:29:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:29:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:29:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:29:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:29:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:29:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:29:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:29:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:29:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:29:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:29:10,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:29:10,958 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:29:10,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:29:10 BoogieIcfgContainer [2021-02-21 21:29:10,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:29:10,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:29:10,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:29:10,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:29:10,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:29:09" (1/3) ... [2021-02-21 21:29:10,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a0aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:29:10, skipping insertion in model container [2021-02-21 21:29:10,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:09" (2/3) ... [2021-02-21 21:29:10,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a0aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:29:10, skipping insertion in model container [2021-02-21 21:29:10,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:29:10" (3/3) ... [2021-02-21 21:29:10,981 INFO L111 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2021-02-21 21:29:10,996 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:29:11,012 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:29:11,046 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:29:11,087 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:29:11,087 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:29:11,088 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:29:11,088 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:29:11,088 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:29:11,088 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:29:11,089 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:29:11,089 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:29:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-02-21 21:29:11,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 21:29:11,138 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:11,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:11,142 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:11,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:11,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1427682070, now seen corresponding path program 1 times [2021-02-21 21:29:11,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:11,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703701346] [2021-02-21 21:29:11,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:11,317 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:29:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:11,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:11,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:11,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:11,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:11,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:11,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:11,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:29:11,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703701346] [2021-02-21 21:29:11,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:11,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:29:11,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37552129] [2021-02-21 21:29:11,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:29:11,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:12,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:29:12,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:29:12,021 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2021-02-21 21:29:12,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:12,179 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-02-21 21:29:12,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:29:12,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-02-21 21:29:12,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:12,207 INFO L225 Difference]: With dead ends: 53 [2021-02-21 21:29:12,208 INFO L226 Difference]: Without dead ends: 31 [2021-02-21 21:29:12,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:29:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-21 21:29:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-02-21 21:29:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-21 21:29:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-02-21 21:29:12,340 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2021-02-21 21:29:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:12,342 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-02-21 21:29:12,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:29:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-02-21 21:29:12,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 21:29:12,345 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:12,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:12,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:29:12,347 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:12,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1433223196, now seen corresponding path program 1 times [2021-02-21 21:29:12,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:12,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661534838] [2021-02-21 21:29:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:12,365 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:29:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:12,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:12,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:12,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:12,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:29:12,759 WARN L141 QuantifierPusher]: treesize reduction 13, result has 55.2 percent of original size [2021-02-21 21:29:12,763 WARN L147 QuantifierPusher]: treesize reduction 13, result has 55.2 percent of original size 16 [2021-02-21 21:29:12,796 WARN L141 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-02-21 21:29:12,799 WARN L147 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size 20 [2021-02-21 21:29:12,834 WARN L141 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-02-21 21:29:12,837 WARN L147 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size 12 [2021-02-21 21:29:12,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:12,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:12,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:12,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:12,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:12,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:12,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:12,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:12,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:29:12,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661534838] [2021-02-21 21:29:12,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:12,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:29:12,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366607838] [2021-02-21 21:29:12,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:29:12,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:12,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:29:12,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:29:12,994 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2021-02-21 21:29:13,538 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2021-02-21 21:29:13,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:14,001 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-02-21 21:29:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 21:29:14,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2021-02-21 21:29:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:14,013 INFO L225 Difference]: With dead ends: 39 [2021-02-21 21:29:14,014 INFO L226 Difference]: Without dead ends: 34 [2021-02-21 21:29:14,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-02-21 21:29:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-02-21 21:29:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-02-21 21:29:14,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-21 21:29:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-02-21 21:29:14,064 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 28 [2021-02-21 21:29:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:14,065 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-02-21 21:29:14,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:29:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-02-21 21:29:14,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-21 21:29:14,074 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:14,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:14,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:29:14,076 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:14,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:14,079 INFO L82 PathProgramCache]: Analyzing trace with hash 322329265, now seen corresponding path program 1 times [2021-02-21 21:29:14,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:14,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397925452] [2021-02-21 21:29:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:16,328 WARN L141 QuantifierPusher]: treesize reduction 37, result has 66.1 percent of original size [2021-02-21 21:29:16,414 WARN L147 QuantifierPusher]: treesize reduction 37, result has 66.1 percent of original size 72 [2021-02-21 21:29:16,420 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-21 21:29:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:16,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:16,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:16,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:16,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:29:16,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:16,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:29:16,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:16,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 21:29:16,787 WARN L141 QuantifierPusher]: treesize reduction 26, result has 58.1 percent of original size [2021-02-21 21:29:16,796 WARN L147 QuantifierPusher]: treesize reduction 26, result has 58.1 percent of original size 36 [2021-02-21 21:29:16,884 WARN L141 QuantifierPusher]: treesize reduction 40, result has 23.1 percent of original size [2021-02-21 21:29:16,887 WARN L147 QuantifierPusher]: treesize reduction 40, result has 23.1 percent of original size 12 [2021-02-21 21:29:16,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:16,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:16,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:16,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:16,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:16,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:16,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:17,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:17,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:29:17,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:17,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:17,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:17,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-02-21 21:29:17,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-02-21 21:29:17,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:17,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 21:29:17,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:17,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 21:29:17,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:17,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 21:29:17,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:17,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:17,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397925452] [2021-02-21 21:29:17,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:17,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:29:17,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596652885] [2021-02-21 21:29:17,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:29:17,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:17,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:29:17,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:29:17,231 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 11 states. [2021-02-21 21:29:17,696 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-02-21 21:29:17,844 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-02-21 21:29:18,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:18,330 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-02-21 21:29:18,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 21:29:18,332 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2021-02-21 21:29:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:18,333 INFO L225 Difference]: With dead ends: 34 [2021-02-21 21:29:18,334 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:29:18,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-02-21 21:29:18,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:29:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:29:18,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:29:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:29:18,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-02-21 21:29:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:18,338 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:29:18,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:29:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:29:18,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:29:18,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:29:18,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:29:18,926 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 12 [2021-02-21 21:29:19,127 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:29:19,128 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:29:19,129 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:29:19,129 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:29:19,129 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:29:19,130 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:29:19,130 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:29:19,130 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-21 21:29:19,130 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:29:19,131 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:29:19,131 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:29:19,131 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-21 21:29:19,131 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:29:19,132 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:29:19,132 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:29:19,132 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:29:19,132 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:29:19,132 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:29:19,132 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-21 21:29:19,133 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-21 21:29:19,133 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:29:19,133 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:29:19,135 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:29:19,135 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (< 0 main_~cnt~0) (<= 0 main_~b~0) (<= .cse1 .cse0))) [2021-02-21 21:29:19,136 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (and (<= main_~a~0 main_~res~0) (<= main_~res~0 (+ main_~a~0 main_~b~0)) (<= main_~res~0 main_~a~0)) [2021-02-21 21:29:19,136 INFO L192 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-02-21 21:29:19,136 INFO L192 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: true [2021-02-21 21:29:19,136 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-21 21:29:19,136 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-21 21:29:19,137 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-21 21:29:19,137 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 38) the Hoare annotation is: true [2021-02-21 21:29:19,137 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-21 21:29:19,137 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 38) the Hoare annotation is: true [2021-02-21 21:29:19,138 INFO L192 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: true [2021-02-21 21:29:19,138 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (+ main_~res~0 main_~cnt~0 1))) (and (< 0 (+ main_~cnt~0 1)) (<= .cse0 .cse1) (<= .cse1 .cse0) (<= 0 main_~b~0))) [2021-02-21 21:29:19,140 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (<= 0 main_~b~0) [2021-02-21 21:29:19,142 INFO L185 CegarLoopUtils]: At program point L32-2(lines 32 35) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= 0 main_~b~0) (<= .cse1 .cse0) (<= main_~res~0 .cse0))) [2021-02-21 21:29:19,150 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2021-02-21 21:29:19,151 INFO L185 CegarLoopUtils]: At program point L32-3(lines 32 35) the Hoare annotation is: (and (<= (+ main_~a~0 main_~b~0) main_~res~0) (< main_~res~0 (+ main_~a~0 main_~b~0 1)) (<= 0 main_~b~0)) [2021-02-21 21:29:19,151 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-21 21:29:19,153 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-21 21:29:19,161 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-21 21:29:19,162 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-21 21:29:19,162 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-21 21:29:19,162 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-02-21 21:29:19,163 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-21 21:29:19,163 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-02-21 21:29:19,163 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:29:19,163 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:29:19,163 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:29:19,164 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:29:19,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:29:19 BoogieIcfgContainer [2021-02-21 21:29:19,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:29:19,203 INFO L168 Benchmark]: Toolchain (without parser) took 9849.72 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 126.0 MB in the beginning and 137.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 97.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:19,205 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:29:19,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.69 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 115.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:19,209 INFO L168 Benchmark]: Boogie Preprocessor took 64.24 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:19,215 INFO L168 Benchmark]: RCFGBuilder took 929.52 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 132.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:19,218 INFO L168 Benchmark]: TraceAbstraction took 8234.43 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 131.6 MB in the beginning and 137.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 102.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:19,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 584.69 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 115.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.24 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 929.52 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 132.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8234.43 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 131.6 MB in the beginning and 137.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 102.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((a + b <= res + cnt && 0 <= b) && res + cnt <= a + b) && res <= a + b - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 90 SDslu, 140 SDs, 0 SdLazy, 215 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 55 PreInvPairs, 69 NumberOfFragments, 171 HoareAnnotationTreeSize, 55 FomulaSimplifications, 151 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 41 FomulaSimplificationsInter, 1022 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...