/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/bitvector/modulus-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 11:32:06,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 11:32:06,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 11:32:06,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 11:32:06,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 11:32:06,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 11:32:06,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 11:32:06,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 11:32:06,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 11:32:06,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 11:32:06,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 11:32:06,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 11:32:06,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 11:32:06,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 11:32:06,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 11:32:06,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 11:32:06,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 11:32:06,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 11:32:06,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 11:32:06,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 11:32:06,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 11:32:06,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 11:32:06,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 11:32:06,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 11:32:06,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 11:32:06,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 11:32:06,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 11:32:06,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 11:32:06,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 11:32:06,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 11:32:06,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 11:32:06,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 11:32:06,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 11:32:06,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 11:32:06,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 11:32:06,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 11:32:06,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 11:32:06,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 11:32:06,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 11:32:06,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 11:32:06,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 11:32:06,516 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 11:32:06,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 11:32:06,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 11:32:06,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 11:32:06,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 11:32:06,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 11:32:06,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 11:32:06,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 11:32:06,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 11:32:06,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 11:32:06,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 11:32:06,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 11:32:06,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 11:32:06,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:32:06,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 11:32:06,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 11:32:06,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 11:32:06,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 11:32:06,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 11:32:06,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 11:32:06,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 11:32:06,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 11:32:06,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 11:32:06,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 11:32:06,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 11:32:06,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 11:32:06,995 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 11:32:06,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/modulus-2.i [2021-01-06 11:32:07,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b6f17376d/0c4cd4acb20e44d4b73c3c701250e892/FLAG82e2364a4 [2021-01-06 11:32:07,716 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 11:32:07,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/bitvector/modulus-2.i [2021-01-06 11:32:07,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b6f17376d/0c4cd4acb20e44d4b73c3c701250e892/FLAG82e2364a4 [2021-01-06 11:32:08,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b6f17376d/0c4cd4acb20e44d4b73c3c701250e892 [2021-01-06 11:32:08,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 11:32:08,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 11:32:08,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 11:32:08,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 11:32:08,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 11:32:08,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:32:08" (1/1) ... [2021-01-06 11:32:08,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd94204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08, skipping insertion in model container [2021-01-06 11:32:08,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:32:08" (1/1) ... [2021-01-06 11:32:08,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 11:32:08,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 11:32:08,367 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/bitvector/modulus-2.i[947,960] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~m~0,] left hand side expression in assignment: lhs: VariableLHS[~m~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~m~0,] [2021-01-06 11:32:08,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:32:08,430 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 11:32:08,452 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/bitvector/modulus-2.i[947,960] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~m~0,] left hand side expression in assignment: lhs: VariableLHS[~m~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~m~0,] [2021-01-06 11:32:08,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:32:08,504 INFO L208 MainTranslator]: Completed translation [2021-01-06 11:32:08,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08 WrapperNode [2021-01-06 11:32:08,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 11:32:08,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 11:32:08,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 11:32:08,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 11:32:08,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08" (1/1) ... [2021-01-06 11:32:08,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08" (1/1) ... [2021-01-06 11:32:08,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 11:32:08,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 11:32:08,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 11:32:08,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 11:32:08,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08" (1/1) ... [2021-01-06 11:32:08,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08" (1/1) ... [2021-01-06 11:32:08,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08" (1/1) ... [2021-01-06 11:32:08,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08" (1/1) ... [2021-01-06 11:32:08,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08" (1/1) ... [2021-01-06 11:32:08,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08" (1/1) ... [2021-01-06 11:32:08,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08" (1/1) ... [2021-01-06 11:32:08,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 11:32:08,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 11:32:08,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 11:32:08,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 11:32:08,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08" (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 [2021-01-06 11:32:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 11:32:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 11:32:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 11:32:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 11:32:09,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 11:32:09,082 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-06 11:32:09,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:09 BoogieIcfgContainer [2021-01-06 11:32:09,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 11:32:09,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 11:32:09,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 11:32:09,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 11:32:09,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:32:08" (1/3) ... [2021-01-06 11:32:09,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a32917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:32:09, skipping insertion in model container [2021-01-06 11:32:09,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:08" (2/3) ... [2021-01-06 11:32:09,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a32917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:32:09, skipping insertion in model container [2021-01-06 11:32:09,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:09" (3/3) ... [2021-01-06 11:32:09,094 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2021-01-06 11:32:09,101 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 11:32:09,106 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 11:32:09,128 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 11:32:09,179 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 11:32:09,179 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 11:32:09,179 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 11:32:09,179 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 11:32:09,180 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 11:32:09,180 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 11:32:09,180 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 11:32:09,180 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 11:32:09,205 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2021-01-06 11:32:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 11:32:09,223 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:32:09,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:32:09,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:32:09,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:32:09,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1232845228, now seen corresponding path program 1 times [2021-01-06 11:32:09,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:32:09,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519407359] [2021-01-06 11:32:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:32:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:32:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:32:09,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519407359] [2021-01-06 11:32:09,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:32:09,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 11:32:09,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225915406] [2021-01-06 11:32:09,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 11:32:09,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:32:09,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 11:32:09,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 11:32:09,533 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2021-01-06 11:32:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:32:09,559 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2021-01-06 11:32:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 11:32:09,561 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 11:32:09,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:32:09,590 INFO L225 Difference]: With dead ends: 31 [2021-01-06 11:32:09,590 INFO L226 Difference]: Without dead ends: 13 [2021-01-06 11:32:09,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 11:32:09,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-01-06 11:32:09,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-01-06 11:32:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-01-06 11:32:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-01-06 11:32:09,640 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-01-06 11:32:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:32:09,641 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-01-06 11:32:09,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 11:32:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-01-06 11:32:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 11:32:09,643 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:32:09,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:32:09,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 11:32:09,645 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:32:09,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:32:09,651 INFO L82 PathProgramCache]: Analyzing trace with hash -2042191854, now seen corresponding path program 1 times [2021-01-06 11:32:09,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:32:09,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378794676] [2021-01-06 11:32:09,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:32:09,719 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 11:32:09,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363734092] [2021-01-06 11:32:09,720 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 [2021-01-06 11:32:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:32:09,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 11:32:09,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:32:10,270 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:32:10,481 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:10,600 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:10,719 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:32:10,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:32:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:32:10,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378794676] [2021-01-06 11:32:10,897 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 11:32:10,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363734092] [2021-01-06 11:32:10,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:32:10,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 11:32:10,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97098439] [2021-01-06 11:32:10,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 11:32:10,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:32:10,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 11:32:10,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 11:32:10,905 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 7 states. [2021-01-06 11:32:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:32:11,138 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-01-06 11:32:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 11:32:11,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-01-06 11:32:11,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:32:11,140 INFO L225 Difference]: With dead ends: 23 [2021-01-06 11:32:11,141 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 11:32:11,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-01-06 11:32:11,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 11:32:11,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-01-06 11:32:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 11:32:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-01-06 11:32:11,148 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2021-01-06 11:32:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:32:11,148 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-01-06 11:32:11,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 11:32:11,149 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-01-06 11:32:11,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 11:32:11,149 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:32:11,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:32:11,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 11:32:11,365 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:32:11,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:32:11,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2042132272, now seen corresponding path program 1 times [2021-01-06 11:32:11,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:32:11,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559023372] [2021-01-06 11:32:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:32:11,384 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 11:32:11,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796342517] [2021-01-06 11:32:11,385 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 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 [2021-01-06 11:32:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:32:11,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 11:32:11,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:32:11,604 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:32:11,615 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:32:11,698 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:11,759 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:32:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:32:11,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559023372] [2021-01-06 11:32:11,802 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 11:32:11,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796342517] [2021-01-06 11:32:11,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:32:11,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 11:32:11,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874705635] [2021-01-06 11:32:11,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 11:32:11,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:32:11,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 11:32:11,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 11:32:11,805 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 7 states. [2021-01-06 11:32:11,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:32:11,947 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-01-06 11:32:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 11:32:11,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-01-06 11:32:11,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:32:11,949 INFO L225 Difference]: With dead ends: 19 [2021-01-06 11:32:11,949 INFO L226 Difference]: Without dead ends: 14 [2021-01-06 11:32:11,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-01-06 11:32:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-01-06 11:32:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-01-06 11:32:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-01-06 11:32:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-01-06 11:32:11,953 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2021-01-06 11:32:11,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:32:11,953 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-01-06 11:32:11,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 11:32:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-01-06 11:32:11,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 11:32:11,954 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:32:11,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:32:12,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:32:12,168 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:32:12,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:32:12,169 INFO L82 PathProgramCache]: Analyzing trace with hash 387361989, now seen corresponding path program 1 times [2021-01-06 11:32:12,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:32:12,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514310118] [2021-01-06 11:32:12,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:32:12,192 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 11:32:12,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696680290] [2021-01-06 11:32:12,193 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 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 [2021-01-06 11:32:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:32:12,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 11:32:12,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:32:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:32:12,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514310118] [2021-01-06 11:32:12,300 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 11:32:12,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696680290] [2021-01-06 11:32:12,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:32:12,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 11:32:12,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899840040] [2021-01-06 11:32:12,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 11:32:12,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:32:12,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 11:32:12,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 11:32:12,302 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2021-01-06 11:32:12,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:32:12,342 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-01-06 11:32:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 11:32:12,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 11:32:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:32:12,344 INFO L225 Difference]: With dead ends: 23 [2021-01-06 11:32:12,344 INFO L226 Difference]: Without dead ends: 15 [2021-01-06 11:32:12,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 11:32:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-01-06 11:32:12,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-01-06 11:32:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 11:32:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-01-06 11:32:12,348 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 13 [2021-01-06 11:32:12,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:32:12,349 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-01-06 11:32:12,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 11:32:12,349 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-01-06 11:32:12,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 11:32:12,349 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:32:12,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:32:12,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:32:12,564 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:32:12,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:32:12,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1988806915, now seen corresponding path program 1 times [2021-01-06 11:32:12,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:32:12,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873344479] [2021-01-06 11:32:12,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:32:12,585 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 11:32:12,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006291800] [2021-01-06 11:32:12,586 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:32:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:32:12,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 11:32:12,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:32:12,735 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:32:12,736 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:12,736 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:32:12,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:12,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:12,745 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 2, 1] term [2021-01-06 11:32:12,745 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:12,749 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:32:12,751 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-06 11:32:12,752 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:12,754 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:32:12,885 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:32:12,952 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:13,019 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:13,073 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:32:13,150 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:32:13,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:32:13,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873344479] [2021-01-06 11:32:13,189 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 11:32:13,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006291800] [2021-01-06 11:32:13,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 11:32:13,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 11:32:13,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070558512] [2021-01-06 11:32:13,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 11:32:13,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:32:13,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 11:32:13,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 11:32:13,200 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 9 states. [2021-01-06 11:32:13,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:32:13,391 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-01-06 11:32:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 11:32:13,392 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2021-01-06 11:32:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:32:13,394 INFO L225 Difference]: With dead ends: 19 [2021-01-06 11:32:13,394 INFO L226 Difference]: Without dead ends: 15 [2021-01-06 11:32:13,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-01-06 11:32:13,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-01-06 11:32:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-01-06 11:32:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 11:32:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-01-06 11:32:13,400 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 14 [2021-01-06 11:32:13,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:32:13,406 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-01-06 11:32:13,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 11:32:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-01-06 11:32:13,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 11:32:13,408 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:32:13,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:32:13,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:32:13,623 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:32:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:32:13,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1988866497, now seen corresponding path program 1 times [2021-01-06 11:32:13,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:32:13,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531201333] [2021-01-06 11:32:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:32:13,642 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 11:32:13,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411363492] [2021-01-06 11:32:13,642 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:32:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:32:13,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 11:32:13,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:32:13,795 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 11:32:13,796 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:13,796 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 11:32:13,797 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:32:13,798 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:32:13,801 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-06 11:32:13,802 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:32:13,807 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:13,927 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:32:13,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:32:13,989 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:32:14,034 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:32:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:32:14,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531201333] [2021-01-06 11:32:14,072 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 11:32:14,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411363492] [2021-01-06 11:32:14,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 11:32:14,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 11:32:14,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889542588] [2021-01-06 11:32:14,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 11:32:14,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:32:14,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 11:32:14,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 11:32:14,081 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 9 states. [2021-01-06 11:32:14,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:32:14,225 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-01-06 11:32:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 11:32:14,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2021-01-06 11:32:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:32:14,226 INFO L225 Difference]: With dead ends: 15 [2021-01-06 11:32:14,227 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 11:32:14,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-01-06 11:32:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 11:32:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 11:32:14,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 11:32:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 11:32:14,228 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-01-06 11:32:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:32:14,228 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 11:32:14,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 11:32:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 11:32:14,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 11:32:14,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 11:32:14,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 11:32:14,485 INFO L185 CegarLoopUtils]: At program point L48-2(lines 48 51) the Hoare annotation is: (and (< 0 (mod ULTIMATE.start_main_~d~0 4294967296)) (or (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1))) [2021-01-06 11:32:14,485 INFO L189 CegarLoopUtils]: For program point L48-3(lines 48 51) no Hoare annotation was computed. [2021-01-06 11:32:14,486 INFO L189 CegarLoopUtils]: For program point L44(lines 44 58) no Hoare annotation was computed. [2021-01-06 11:32:14,486 INFO L192 CegarLoopUtils]: At program point L44-1(lines 44 58) the Hoare annotation is: true [2021-01-06 11:32:14,486 INFO L189 CegarLoopUtils]: For program point L3(line 3) no Hoare annotation was computed. [2021-01-06 11:32:14,486 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 11:32:14,486 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 11:32:14,486 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 11:32:14,486 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-01-06 11:32:14,486 INFO L189 CegarLoopUtils]: For program point L20(lines 20 22) no Hoare annotation was computed. [2021-01-06 11:32:14,487 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 11:32:14,487 INFO L189 CegarLoopUtils]: For program point L54-1(lines 54 56) no Hoare annotation was computed. [2021-01-06 11:32:14,487 INFO L189 CegarLoopUtils]: For program point L21(line 21) no Hoare annotation was computed. [2021-01-06 11:32:14,487 INFO L185 CegarLoopUtils]: At program point L46-2(lines 46 53) the Hoare annotation is: (and (< 0 (mod ULTIMATE.start_main_~d~0 4294967296)) (or (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~m~0)) [2021-01-06 11:32:14,487 INFO L189 CegarLoopUtils]: For program point L46-3(lines 44 58) no Hoare annotation was computed. [2021-01-06 11:32:14,487 INFO L192 CegarLoopUtils]: At program point L59(lines 36 60) the Hoare annotation is: true [2021-01-06 11:32:14,487 INFO L189 CegarLoopUtils]: For program point L2(lines 2 4) no Hoare annotation was computed. [2021-01-06 11:32:14,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:32:14 BoogieIcfgContainer [2021-01-06 11:32:14,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 11:32:14,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 11:32:14,506 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 11:32:14,507 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 11:32:14,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:09" (3/4) ... [2021-01-06 11:32:14,511 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 11:32:14,523 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-01-06 11:32:14,523 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 11:32:14,523 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 11:32:14,523 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 11:32:14,564 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/bitvector/modulus-2.i-witness.graphml [2021-01-06 11:32:14,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 11:32:14,567 INFO L168 Benchmark]: Toolchain (without parser) took 6445.97 ms. Allocated memory was 155.2 MB in the beginning and 199.2 MB in the end (delta: 44.0 MB). Free memory was 130.6 MB in the beginning and 73.9 MB in the end (delta: 56.7 MB). Peak memory consumption was 101.8 MB. Max. memory is 8.0 GB. [2021-01-06 11:32:14,568 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 11:32:14,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.48 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 120.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 11:32:14,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.15 ms. Allocated memory is still 155.2 MB. Free memory was 120.4 MB in the beginning and 119.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 11:32:14,569 INFO L168 Benchmark]: Boogie Preprocessor took 66.97 ms. Allocated memory is still 155.2 MB. Free memory was 119.1 MB in the beginning and 117.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 11:32:14,570 INFO L168 Benchmark]: RCFGBuilder took 440.88 ms. Allocated memory is still 155.2 MB. Free memory was 117.7 MB in the beginning and 105.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 11:32:14,571 INFO L168 Benchmark]: TraceAbstraction took 5419.77 ms. Allocated memory was 155.2 MB in the beginning and 199.2 MB in the end (delta: 44.0 MB). Free memory was 104.7 MB in the beginning and 76.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 72.5 MB. Max. memory is 8.0 GB. [2021-01-06 11:32:14,571 INFO L168 Benchmark]: Witness Printer took 58.35 ms. Allocated memory is still 199.2 MB. Free memory was 76.5 MB in the beginning and 73.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 11:32:14,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 381.48 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 120.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 66.15 ms. Allocated memory is still 155.2 MB. Free memory was 120.4 MB in the beginning and 119.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.97 ms. Allocated memory is still 155.2 MB. Free memory was 119.1 MB in the beginning and 117.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 440.88 ms. Allocated memory is still 155.2 MB. Free memory was 117.7 MB in the beginning and 105.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5419.77 ms. Allocated memory was 155.2 MB in the beginning and 199.2 MB in the end (delta: 44.0 MB). Free memory was 104.7 MB in the beginning and 76.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 72.5 MB. Max. memory is 8.0 GB. * Witness Printer took 58.35 ms. Allocated memory is still 199.2 MB. Free memory was 76.5 MB in the beginning and 73.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: 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: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (0 < d % 4294967296 && (cond == 0 || cond == 1)) && n == m - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 0 < d % 4294967296 && (cond == 0 || cond == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 95 SDslu, 63 SDs, 0 SdLazy, 166 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 31 HoareAnnotationTreeSize, 4 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 3657 SizeOfPredicates, 30 NumberOfNonLiveVariables, 268 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 3/5 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...