/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:59:43,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:59:43,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:59:43,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:59:43,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:59:43,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:59:43,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:59:43,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:59:43,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:59:43,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:59:43,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:59:43,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:59:43,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:59:43,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:59:43,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:59:43,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:59:43,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:59:43,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:59:43,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:59:43,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:59:43,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:59:43,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:59:43,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:59:43,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:59:43,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:59:43,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:59:43,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:59:43,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:59:43,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:59:44,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:59:44,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:59:44,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:59:44,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:59:44,018 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:59:44,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:59:44,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:59:44,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:59:44,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:59:44,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:59:44,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:59:44,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:59:44,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:59:44,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:59:44,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:59:44,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:59:44,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:59:44,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:59:44,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:59:44,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:59:44,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:59:44,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:59:44,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:59:44,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:59:44,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:59:44,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:59:44,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:59:44,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:59:44,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:59:44,494 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:59:44,495 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:59:44,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-12-23 06:59:44,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7088cc8b9/e08bbdcdc9594fa9816a61846f02eb4c/FLAG6d43a2282 [2020-12-23 06:59:45,328 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:59:45,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-12-23 06:59:45,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7088cc8b9/e08bbdcdc9594fa9816a61846f02eb4c/FLAG6d43a2282 [2020-12-23 06:59:45,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7088cc8b9/e08bbdcdc9594fa9816a61846f02eb4c [2020-12-23 06:59:45,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:59:45,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:59:45,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:59:45,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:59:45,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:59:45,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:59:45" (1/1) ... [2020-12-23 06:59:45,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c4d78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:45, skipping insertion in model container [2020-12-23 06:59:45,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:59:45" (1/1) ... [2020-12-23 06:59:45,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:59:45,645 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__Id_MCDC_112~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_89__Id_MCDC_88~0,] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_93~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_89____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__Id_MCDC_92~0,] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_89____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_89__Id_MCDC_96~0,] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_89____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__Id_MCDC_92~1,] [2020-12-23 06:59:45,879 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2020-12-23 06:59:45,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:59:45,896 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__Id_MCDC_112~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_89__Id_MCDC_88~0,] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_93~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_89____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__Id_MCDC_92~0,] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_89____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_89__Id_MCDC_96~0,] left hand side expression in assignment: lhs: VariableLHS[~Id_MCDC_89____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__Id_MCDC_92~1,] [2020-12-23 06:59:45,978 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2020-12-23 06:59:45,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:59:46,003 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:59:46,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46 WrapperNode [2020-12-23 06:59:46,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:59:46,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:59:46,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:59:46,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:59:46,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46" (1/1) ... [2020-12-23 06:59:46,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46" (1/1) ... [2020-12-23 06:59:46,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:59:46,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:59:46,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:59:46,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:59:46,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46" (1/1) ... [2020-12-23 06:59:46,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46" (1/1) ... [2020-12-23 06:59:46,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46" (1/1) ... [2020-12-23 06:59:46,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46" (1/1) ... [2020-12-23 06:59:46,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46" (1/1) ... [2020-12-23 06:59:46,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46" (1/1) ... [2020-12-23 06:59:46,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46" (1/1) ... [2020-12-23 06:59:46,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:59:46,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:59:46,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:59:46,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:59:46,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 06:59:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 06:59:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-12-23 06:59:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:59:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:59:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:59:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:59:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:59:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:59:47,260 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:59:47,260 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 06:59:47,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:59:47 BoogieIcfgContainer [2020-12-23 06:59:47,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:59:47,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:59:47,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:59:47,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:59:47,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:59:45" (1/3) ... [2020-12-23 06:59:47,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b66de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:59:47, skipping insertion in model container [2020-12-23 06:59:47,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:59:46" (2/3) ... [2020-12-23 06:59:47,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b66de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:59:47, skipping insertion in model container [2020-12-23 06:59:47,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:59:47" (3/3) ... [2020-12-23 06:59:47,274 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2020-12-23 06:59:47,282 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:59:47,288 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:59:47,313 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:59:47,346 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:59:47,346 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:59:47,346 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:59:47,347 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:59:47,347 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:59:47,347 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:59:47,347 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:59:47,347 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:59:47,365 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-23 06:59:47,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 06:59:47,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:59:47,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:59:47,373 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:59:47,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:59:47,382 INFO L82 PathProgramCache]: Analyzing trace with hash 176653045, now seen corresponding path program 1 times [2020-12-23 06:59:47,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:59:47,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375657938] [2020-12-23 06:59:47,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:59:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:47,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375657938] [2020-12-23 06:59:47,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:59:47,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:59:47,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625719309] [2020-12-23 06:59:47,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:59:47,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:47,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:59:47,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:59:47,881 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-12-23 06:59:47,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:59:47,937 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-12-23 06:59:47,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:59:47,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 06:59:47,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:59:47,948 INFO L225 Difference]: With dead ends: 32 [2020-12-23 06:59:47,949 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 06:59:47,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:59:47,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 06:59:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2020-12-23 06:59:47,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-23 06:59:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-12-23 06:59:47,988 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2020-12-23 06:59:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:59:47,988 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-12-23 06:59:47,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:59:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-12-23 06:59:47,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:59:47,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:59:47,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:59:47,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:59:47,990 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:59:47,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:59:47,991 INFO L82 PathProgramCache]: Analyzing trace with hash -314667186, now seen corresponding path program 1 times [2020-12-23 06:59:47,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:59:47,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707112586] [2020-12-23 06:59:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:59:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:48,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707112586] [2020-12-23 06:59:48,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133630288] [2020-12-23 06:59:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:48,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 06:59:48,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:59:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:48,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:59:48,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-23 06:59:48,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942160139] [2020-12-23 06:59:48,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 06:59:48,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:48,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 06:59:48,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 06:59:48,416 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2020-12-23 06:59:48,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:59:48,527 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-12-23 06:59:48,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 06:59:48,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-23 06:59:48,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:59:48,529 INFO L225 Difference]: With dead ends: 25 [2020-12-23 06:59:48,529 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 06:59:48,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 06:59:48,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 06:59:48,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-12-23 06:59:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 06:59:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-23 06:59:48,537 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2020-12-23 06:59:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:59:48,538 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-23 06:59:48,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 06:59:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-23 06:59:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 06:59:48,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:59:48,540 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 06:59:48,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 06:59:48,756 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:59:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:59:48,758 INFO L82 PathProgramCache]: Analyzing trace with hash 921588373, now seen corresponding path program 2 times [2020-12-23 06:59:48,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:59:48,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984449986] [2020-12-23 06:59:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:59:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:48,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984449986] [2020-12-23 06:59:48,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706317702] [2020-12-23 06:59:48,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:49,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 06:59:49,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:59:49,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 06:59:49,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:59:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:49,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:59:49,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-23 06:59:49,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723202863] [2020-12-23 06:59:49,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 06:59:49,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:49,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 06:59:49,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 06:59:49,217 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-12-23 06:59:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:59:49,394 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-12-23 06:59:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 06:59:49,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 06:59:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:59:49,398 INFO L225 Difference]: With dead ends: 30 [2020-12-23 06:59:49,399 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 06:59:49,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 06:59:49,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 06:59:49,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-12-23 06:59:49,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 06:59:49,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-12-23 06:59:49,412 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 18 [2020-12-23 06:59:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:59:49,413 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-12-23 06:59:49,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 06:59:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-12-23 06:59:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 06:59:49,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:59:49,415 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 06:59:49,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:49,630 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:59:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:59:49,632 INFO L82 PathProgramCache]: Analyzing trace with hash -590838866, now seen corresponding path program 3 times [2020-12-23 06:59:49,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:59:49,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132871969] [2020-12-23 06:59:49,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:59:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:49,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132871969] [2020-12-23 06:59:49,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270491504] [2020-12-23 06:59:49,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:51,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 06:59:51,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:59:51,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 06:59:51,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:59:51,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:59:51,714 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:59:51,715 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 22 [2020-12-23 06:59:51,721 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 06:59:51,729 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:59:51,730 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:59:51,731 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:18 [2020-12-23 06:59:51,777 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 06:59:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 06:59:51,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:59:51,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2020-12-23 06:59:51,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3807949] [2020-12-23 06:59:51,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 06:59:51,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:51,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 06:59:51,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-12-23 06:59:51,885 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 14 states. [2020-12-23 06:59:52,563 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-23 06:59:52,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:59:52,793 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-12-23 06:59:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 06:59:52,794 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-12-23 06:59:52,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:59:52,794 INFO L225 Difference]: With dead ends: 35 [2020-12-23 06:59:52,794 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 06:59:52,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2020-12-23 06:59:52,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 06:59:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 06:59:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 06:59:52,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 06:59:52,796 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-12-23 06:59:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:59:52,797 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 06:59:52,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 06:59:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 06:59:52,797 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 06:59:52,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:53,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 06:59:53,201 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-12-23 06:59:53,206 INFO L189 CegarLoopUtils]: For program point L161(lines 161 236) no Hoare annotation was computed. [2020-12-23 06:59:53,206 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 06:59:53,206 INFO L189 CegarLoopUtils]: For program point L190(lines 190 208) no Hoare annotation was computed. [2020-12-23 06:59:53,206 INFO L189 CegarLoopUtils]: For program point L221(line 221) no Hoare annotation was computed. [2020-12-23 06:59:53,206 INFO L189 CegarLoopUtils]: For program point L219(lines 219 227) no Hoare annotation was computed. [2020-12-23 06:59:53,206 INFO L189 CegarLoopUtils]: For program point L182(lines 182 229) no Hoare annotation was computed. [2020-12-23 06:59:53,207 INFO L189 CegarLoopUtils]: For program point L180(lines 180 234) no Hoare annotation was computed. [2020-12-23 06:59:53,207 INFO L189 CegarLoopUtils]: For program point L197(lines 197 207) no Hoare annotation was computed. [2020-12-23 06:59:53,207 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 06:59:53,207 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 06:59:53,207 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 06:59:53,207 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 221) no Hoare annotation was computed. [2020-12-23 06:59:53,208 INFO L185 CegarLoopUtils]: At program point L202(lines 167 235) the Hoare annotation is: (let ((.cse6 (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|))) (let ((.cse0 (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0)) (.cse2 (= (select .cse6 (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 472)) 0)) (.cse3 (= (select .cse6 (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0)) (.cse5 (= |ULTIMATE.start_main_~#main__Id_MCDC_119~0.offset| 0))) (or (let ((.cse4 (mod (+ ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296)) (.cse1 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (and .cse0 (< .cse1 42) .cse2 .cse3 (< .cse4 42) (not (= (* .cse4 12) 492)) (not (= 492 (* .cse1 12))) .cse5)) (and .cse0 (= ~Id_MCDC_93~0 0) (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 0) .cse2 .cse3 .cse5) (and .cse0 (<= 1 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) .cse2 .cse3 (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 2) .cse5 (<= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 1))))) [2020-12-23 06:59:53,208 INFO L192 CegarLoopUtils]: At program point L233(lines 133 237) the Hoare annotation is: true [2020-12-23 06:59:53,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:59:53 BoogieIcfgContainer [2020-12-23 06:59:53,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:59:53,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:59:53,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:59:53,234 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:59:53,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:59:47" (3/4) ... [2020-12-23 06:59:53,239 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 06:59:53,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-23 06:59:53,258 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-23 06:59:53,259 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-23 06:59:53,260 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 06:59:53,261 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 06:59:53,527 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c-witness.graphml [2020-12-23 06:59:53,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:59:53,529 INFO L168 Benchmark]: Toolchain (without parser) took 7949.53 ms. Allocated memory was 165.7 MB in the beginning and 210.8 MB in the end (delta: 45.1 MB). Free memory was 140.6 MB in the beginning and 83.9 MB in the end (delta: 56.7 MB). Peak memory consumption was 101.9 MB. Max. memory is 8.0 GB. [2020-12-23 06:59:53,530 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 165.7 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:59:53,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.44 ms. Allocated memory is still 165.7 MB. Free memory was 140.4 MB in the beginning and 124.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-23 06:59:53,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.53 ms. Allocated memory is still 165.7 MB. Free memory was 124.5 MB in the beginning and 121.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:59:53,532 INFO L168 Benchmark]: Boogie Preprocessor took 106.92 ms. Allocated memory is still 165.7 MB. Free memory was 121.2 MB in the beginning and 118.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:59:53,532 INFO L168 Benchmark]: RCFGBuilder took 1059.77 ms. Allocated memory is still 165.7 MB. Free memory was 118.1 MB in the beginning and 79.8 MB in the end (delta: 38.3 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. [2020-12-23 06:59:53,533 INFO L168 Benchmark]: TraceAbstraction took 5968.67 ms. Allocated memory was 165.7 MB in the beginning and 210.8 MB in the end (delta: 45.1 MB). Free memory was 79.2 MB in the beginning and 148.2 MB in the end (delta: -69.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:59:53,533 INFO L168 Benchmark]: Witness Printer took 293.94 ms. Allocated memory is still 210.8 MB. Free memory was 148.2 MB in the beginning and 83.9 MB in the end (delta: 64.3 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. [2020-12-23 06:59:53,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 165.7 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 421.44 ms. Allocated memory is still 165.7 MB. Free memory was 140.4 MB in the beginning and 124.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 89.53 ms. Allocated memory is still 165.7 MB. Free memory was 124.5 MB in the beginning and 121.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 106.92 ms. Allocated memory is still 165.7 MB. Free memory was 121.2 MB in the beginning and 118.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1059.77 ms. Allocated memory is still 165.7 MB. Free memory was 118.1 MB in the beginning and 79.8 MB in the end (delta: 38.3 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5968.67 ms. Allocated memory was 165.7 MB in the beginning and 210.8 MB in the end (delta: 45.1 MB). Free memory was 79.2 MB in the beginning and 148.2 MB in the end (delta: -69.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 293.94 ms. Allocated memory is still 210.8 MB. Free memory was 148.2 MB in the beginning and 83.9 MB in the end (delta: 64.3 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 221]: 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: 167]: Loop Invariant Derived loop invariant: ((((((((Id_MCDC_89__Id_MCDC_95 == 0 && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 472] == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42) && !((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 * 12 == 492)) && !(492 == (Id_MCDC_93 + 4294967295) % 4294967296 * 12)) && main__Id_MCDC_119 == 0) || (((((Id_MCDC_89__Id_MCDC_95 == 0 && Id_MCDC_93 == 0) && Id_MCDC_89__Id_MCDC_96 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 472] == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && main__Id_MCDC_119 == 0)) || (((((((Id_MCDC_89__Id_MCDC_95 == 0 && 1 <= Id_MCDC_89__Id_MCDC_96) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 472] == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 2) && main__Id_MCDC_119 == 0) && Id_MCDC_89__Id_MCDC_96 <= 1) - InvariantResult [Line: 133]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 124 SDslu, 84 SDs, 0 SdLazy, 185 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 133 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 192 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 116 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 15229 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1217 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 13/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...