/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/loops/sum04-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:17:50,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:17:50,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:17:51,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:17:51,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:17:51,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:17:51,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:17:51,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:17:51,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:17:51,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:17:51,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:17:51,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:17:51,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:17:51,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:17:51,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:17:51,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:17:51,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:17:51,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:17:51,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:17:51,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:17:51,100 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 21:17:51,113 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:17:51,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:17:51,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:17:51,115 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:17:51,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:17:51,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:17:51,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:17:51,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:17:51,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:17:51,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:17:51,117 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:17:51,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:17:51,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:17:51,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:17:51,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:17:51,118 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:17:51,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:17:51,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:17:51,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:17:51,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:17:51,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:17:51,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:17:51,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:17:51,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:17:51,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:17:51,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:17:51,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:17:51,552 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:17:51,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-2.i [2021-02-21 21:17:51,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865c89828/49648cba29db4e479ed920b314f5b8f2/FLAG32ebd9bf2 [2021-02-21 21:17:52,322 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:17:52,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-2.i [2021-02-21 21:17:52,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865c89828/49648cba29db4e479ed920b314f5b8f2/FLAG32ebd9bf2 [2021-02-21 21:17:52,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865c89828/49648cba29db4e479ed920b314f5b8f2 [2021-02-21 21:17:52,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:17:52,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:17:52,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:52,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:17:52,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:17:52,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:52" (1/1) ... [2021-02-21 21:17:52,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cb45e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:52, skipping insertion in model container [2021-02-21 21:17:52,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:52" (1/1) ... [2021-02-21 21:17:52,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:17:52,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:17:52,896 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-2.i[808,821] [2021-02-21 21:17:52,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:52,919 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:17:52,934 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-2.i[808,821] [2021-02-21 21:17:52,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:52,954 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:17:52,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:52 WrapperNode [2021-02-21 21:17:52,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:52,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:17:52,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:17:52,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:17:52,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:52" (1/1) ... [2021-02-21 21:17:52,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:52" (1/1) ... [2021-02-21 21:17:52,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:52" (1/1) ... [2021-02-21 21:17:52,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:52" (1/1) ... [2021-02-21 21:17:52,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:52" (1/1) ... [2021-02-21 21:17:52,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:52" (1/1) ... [2021-02-21 21:17:52,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:52" (1/1) ... [2021-02-21 21:17:52,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:17:52,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:17:52,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:17:52,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:17:52,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:52" (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 21:17:53,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:17:53,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:17:53,119 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:17:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:17:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:17:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:17:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:17:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:17:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:17:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:17:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:17:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:17:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:17:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:17:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:17:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:17:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:17:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:17:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:17:53,391 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:17:53,391 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:17:53,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:53 BoogieIcfgContainer [2021-02-21 21:17:53,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:17:53,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:17:53,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:17:53,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:17:53,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:17:52" (1/3) ... [2021-02-21 21:17:53,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7314d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:53, skipping insertion in model container [2021-02-21 21:17:53,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:52" (2/3) ... [2021-02-21 21:17:53,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7314d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:53, skipping insertion in model container [2021-02-21 21:17:53,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:53" (3/3) ... [2021-02-21 21:17:53,405 INFO L111 eAbstractionObserver]: Analyzing ICFG sum04-2.i [2021-02-21 21:17:53,413 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:17:53,419 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:17:53,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:17:53,483 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:17:53,483 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:17:53,484 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:17:53,484 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:17:53,484 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:17:53,484 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:17:53,484 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:17:53,485 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:17:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-02-21 21:17:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 21:17:53,541 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:53,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:17:53,543 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:53,563 INFO L82 PathProgramCache]: Analyzing trace with hash 550983864, now seen corresponding path program 1 times [2021-02-21 21:17:53,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:53,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305946978] [2021-02-21 21:17:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:53,714 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:53,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:53,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:53,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:53,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:17:54,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:54,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:54,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:54,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:54,060 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 21:17:54,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305946978] [2021-02-21 21:17:54,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:54,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:17:54,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347218885] [2021-02-21 21:17:54,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:17:54,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:54,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:17:54,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:17:54,095 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2021-02-21 21:17:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:54,339 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2021-02-21 21:17:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:17:54,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-21 21:17:54,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:54,356 INFO L225 Difference]: With dead ends: 46 [2021-02-21 21:17:54,357 INFO L226 Difference]: Without dead ends: 28 [2021-02-21 21:17:54,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:17:54,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-21 21:17:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-02-21 21:17:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-21 21:17:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-02-21 21:17:54,437 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 19 [2021-02-21 21:17:54,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:54,438 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-02-21 21:17:54,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:17:54,439 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-02-21 21:17:54,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 21:17:54,440 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:54,440 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] [2021-02-21 21:17:54,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:17:54,441 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:54,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:54,442 INFO L82 PathProgramCache]: Analyzing trace with hash -861903488, now seen corresponding path program 1 times [2021-02-21 21:17:54,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:54,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537978355] [2021-02-21 21:17:54,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:56,567 WARN L141 QuantifierPusher]: treesize reduction 33, result has 69.7 percent of original size [2021-02-21 21:17:56,605 WARN L147 QuantifierPusher]: treesize reduction 33, result has 69.7 percent of original size 76 [2021-02-21 21:17:56,607 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-21 21:17:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:56,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:56,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:56,773 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-21 21:17:56,776 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-21 21:17:56,792 WARN L141 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-02-21 21:17:56,798 WARN L147 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size 19 [2021-02-21 21:17:56,824 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-21 21:17:56,826 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-21 21:17:56,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:17:56,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:17:56,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:56,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:56,947 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 21:17:56,959 WARN L141 QuantifierPusher]: treesize reduction 3, result has 97.5 percent of original size [2021-02-21 21:17:56,966 WARN L147 QuantifierPusher]: treesize reduction 3, result has 97.5 percent of original size 116 [2021-02-21 21:17:57,108 WARN L141 QuantifierPusher]: treesize reduction 3, result has 94.2 percent of original size [2021-02-21 21:17:57,112 WARN L147 QuantifierPusher]: treesize reduction 3, result has 94.2 percent of original size 49 [2021-02-21 21:17:57,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:57,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-21 21:17:57,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:57,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-02-21 21:17:57,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:57,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-21 21:17:57,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:57,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-21 21:17:57,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:57,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:57,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537978355] [2021-02-21 21:17:57,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:57,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:17:57,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581647332] [2021-02-21 21:17:57,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:17:57,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:57,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:17:57,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-02-21 21:17:57,462 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2021-02-21 21:17:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:58,189 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-02-21 21:17:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 21:17:58,190 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2021-02-21 21:17:58,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:58,190 INFO L225 Difference]: With dead ends: 26 [2021-02-21 21:17:58,191 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:17:58,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2021-02-21 21:17:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:17:58,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:17:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:17:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:17:58,195 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-02-21 21:17:58,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:58,195 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:17:58,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:17:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:17:58,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:17:58,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:17:58,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:17:58,781 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:17:58,781 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:17:58,782 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:17:58,782 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:17:58,782 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:17:58,782 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:58,782 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:58,782 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-21 21:17:58,783 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:17:58,783 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:17:58,783 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:17:58,783 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 21:17:58,784 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:17:58,784 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:17:58,784 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:17:58,784 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:58,784 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:17:58,784 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:17:58,785 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 22 28) the Hoare annotation is: true [2021-02-21 21:17:58,785 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (or (and (<= main_~i~0 8) (or (and (<= (+ (div (+ (* main_~sn~0 (- 1)) 6) (- 2)) 4) main_~i~0) (<= 4 main_~i~0) (<= main_~i~0 (+ (div (+ main_~sn~0 (- 6)) 2) 4))) (and (<= main_~sn~0 4) (<= 3 main_~i~0) (<= main_~i~0 3) (<= 4 main_~sn~0)) (and (= main_~i~0 2) (= 2 main_~sn~0)))) (and (= main_~sn~0 0) (= main_~i~0 1))) [2021-02-21 21:17:58,785 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 22 28) the Hoare annotation is: true [2021-02-21 21:17:58,785 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (= main_~sn~0 0) [2021-02-21 21:17:58,785 INFO L192 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-02-21 21:17:58,786 INFO L185 CegarLoopUtils]: At program point L24-3(lines 24 26) the Hoare annotation is: (and (or (and (<= 2 main_~i~0) (<= main_~sn~0 4) (<= main_~i~0 2) (<= 4 main_~sn~0)) (and (= main_~i~0 1) (= 2 main_~sn~0)) (and (<= (+ (div (+ (* main_~sn~0 (- 1)) 6) (- 2)) 3) main_~i~0) (<= 3 main_~i~0) (<= main_~i~0 (+ (div (+ main_~sn~0 (- 6)) 2) 3)))) (<= main_~i~0 8)) [2021-02-21 21:17:58,786 INFO L185 CegarLoopUtils]: At program point L24-4(line 24) the Hoare annotation is: (and (or (and (<= 2 main_~i~0) (<= main_~sn~0 4) (<= main_~i~0 2) (<= 4 main_~sn~0)) (and (= main_~i~0 1) (= 2 main_~sn~0)) (and (<= (+ (div (+ (* main_~sn~0 (- 1)) 6) (- 2)) 3) main_~i~0) (<= 3 main_~i~0) (<= main_~i~0 (+ (div (+ main_~sn~0 (- 6)) 2) 3)))) (<= main_~i~0 8) (= |main_#t~post3| main_~i~0)) [2021-02-21 21:17:58,787 INFO L185 CegarLoopUtils]: At program point L24-5(line 24) the Hoare annotation is: (and (<= |main_#t~post3| 8) (or (and (= 2 main_~sn~0) (= |main_#t~post3| 1)) (and (<= |main_#t~post3| (+ (div (+ main_~sn~0 (- 6)) 2) 3)) (<= (+ (div (+ (* main_~sn~0 (- 1)) 6) (- 2)) 3) |main_#t~post3|) (<= 3 |main_#t~post3|)) (and (<= |main_#t~post3| 2) (<= main_~sn~0 4) (<= 2 |main_#t~post3|) (<= 4 main_~sn~0))) (= (+ |main_#t~post3| 1) main_~i~0)) [2021-02-21 21:17:58,787 INFO L185 CegarLoopUtils]: At program point L24-6(lines 24 26) the Hoare annotation is: (or (and (<= main_~i~0 9) (or (and (<= (+ (div (+ (* main_~sn~0 (- 1)) 6) (- 2)) 4) main_~i~0) (<= 4 main_~i~0) (<= main_~i~0 (+ (div (+ main_~sn~0 (- 6)) 2) 4))) (and (<= main_~sn~0 4) (<= 3 main_~i~0) (<= main_~i~0 3) (<= 4 main_~sn~0)) (and (= main_~i~0 2) (= 2 main_~sn~0)))) (and (= main_~sn~0 0) (= main_~i~0 1))) [2021-02-21 21:17:58,787 INFO L185 CegarLoopUtils]: At program point L24-7(lines 24 26) the Hoare annotation is: (and (<= (+ (div (+ (* main_~sn~0 (- 1)) 6) (- 2)) 4) main_~i~0) (< 15 main_~sn~0) (<= main_~i~0 9)) [2021-02-21 21:17:58,787 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 22 28) the Hoare annotation is: true [2021-02-21 21:17:58,787 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:17:58,788 INFO L185 CegarLoopUtils]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:17:58,788 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:17:58,788 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2021-02-21 21:17:58,788 INFO L192 CegarLoopUtils]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2021-02-21 21:17:58,788 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 14 19) the Hoare annotation is: true [2021-02-21 21:17:58,789 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:17:58,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:17:58 BoogieIcfgContainer [2021-02-21 21:17:58,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:17:58,811 INFO L168 Benchmark]: Toolchain (without parser) took 6117.44 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.1 MB in the beginning and 92.6 MB in the end (delta: 34.5 MB). Peak memory consumption was 86.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:58,812 INFO L168 Benchmark]: CDTParser took 1.16 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 117.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:17:58,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.77 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:58,814 INFO L168 Benchmark]: Boogie Preprocessor took 37.95 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:58,814 INFO L168 Benchmark]: RCFGBuilder took 398.40 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 131.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:58,815 INFO L168 Benchmark]: TraceAbstraction took 5413.91 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.8 MB in the beginning and 92.6 MB in the end (delta: 38.2 MB). Peak memory consumption was 89.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:58,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 117.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.77 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.95 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 398.40 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 131.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5413.91 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.8 MB in the beginning and 92.6 MB in the end (delta: 38.2 MB). Peak memory consumption was 89.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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: 24]: Loop Invariant Derived loop invariant: (i <= 9 && (((((sn * -1 + 6) / -2 + 4 <= i && 4 <= i) && i <= (sn + -6) / 2 + 4) || (((sn <= 4 && 3 <= i) && i <= 3) && 4 <= sn)) || (i == 2 && 2 == sn))) || (sn == 0 && i == 1) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 41 SDslu, 92 SDs, 0 SdLazy, 108 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 38 PreInvPairs, 47 NumberOfFragments, 351 HoareAnnotationTreeSize, 38 FomulaSimplifications, 216 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 31 FomulaSimplificationsInter, 442 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...