/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/nla-digbench-scaling/cohendiv-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:21:14,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:21:14,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:21:14,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:21:14,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:21:14,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:21:14,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:21:14,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:21:14,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:21:14,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:21:14,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:21:14,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:21:14,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:21:14,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:21:14,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:21:14,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:21:14,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:21:14,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:21:14,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:21:14,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:21:14,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:21:14,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:21:14,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:21:14,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:21:14,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:21:14,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:21:14,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:21:14,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:21:14,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:21:14,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:21:14,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:21:14,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:21:14,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:21:14,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:21:14,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:21:14,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:21:14,619 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 17:21:14,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:21:14,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:21:14,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:21:14,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:21:14,674 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:21:14,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:21:14,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:21:14,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:21:14,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:21:14,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:21:14,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:21:14,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:21:14,676 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:21:14,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:21:14,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:21:14,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:21:14,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:21:14,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:21:14,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:21:14,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:21:14,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:21:14,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:21:14,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:21:14,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:21:14,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:21:14,679 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:21:15,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:21:15,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:21:15,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:21:15,057 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:21:15,058 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:21:15,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2021-01-06 17:21:15,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e9898dd14/6abdabc791e8458f905177bfc6155a24/FLAG70c92d432 [2021-01-06 17:21:15,687 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:21:15,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2021-01-06 17:21:15,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e9898dd14/6abdabc791e8458f905177bfc6155a24/FLAG70c92d432 [2021-01-06 17:21:16,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e9898dd14/6abdabc791e8458f905177bfc6155a24 [2021-01-06 17:21:16,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:21:16,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:21:16,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:21:16,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:21:16,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:21:16,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:21:16" (1/1) ... [2021-01-06 17:21:16,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efb312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16, skipping insertion in model container [2021-01-06 17:21:16,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:21:16" (1/1) ... [2021-01-06 17:21:16,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:21:16,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:21:16,275 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/nla-digbench-scaling/cohendiv-ll_unwindbound1.c[576,589] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:21:16,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:21:16,310 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:21:16,324 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/nla-digbench-scaling/cohendiv-ll_unwindbound1.c[576,589] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:21:16,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:21:16,350 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:21:16,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16 WrapperNode [2021-01-06 17:21:16,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:21:16,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:21:16,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:21:16,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:21:16,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16" (1/1) ... [2021-01-06 17:21:16,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16" (1/1) ... [2021-01-06 17:21:16,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:21:16,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:21:16,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:21:16,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:21:16,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16" (1/1) ... [2021-01-06 17:21:16,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16" (1/1) ... [2021-01-06 17:21:16,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16" (1/1) ... [2021-01-06 17:21:16,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16" (1/1) ... [2021-01-06 17:21:16,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16" (1/1) ... [2021-01-06 17:21:16,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16" (1/1) ... [2021-01-06 17:21:16,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16" (1/1) ... [2021-01-06 17:21:16,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:21:16,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:21:16,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:21:16,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:21:16,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16" (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 17:21:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:21:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:21:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:21:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:21:16,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:21:16,960 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-01-06 17:21:16,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:21:16 BoogieIcfgContainer [2021-01-06 17:21:16,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:21:16,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:21:16,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:21:16,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:21:16,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:21:16" (1/3) ... [2021-01-06 17:21:16,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9e9171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:21:16, skipping insertion in model container [2021-01-06 17:21:16,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:16" (2/3) ... [2021-01-06 17:21:16,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9e9171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:21:16, skipping insertion in model container [2021-01-06 17:21:16,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:21:16" (3/3) ... [2021-01-06 17:21:16,975 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound1.c [2021-01-06 17:21:16,982 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:21:16,986 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:21:17,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:21:17,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:21:17,033 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:21:17,033 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:21:17,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:21:17,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:21:17,034 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:21:17,034 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:21:17,034 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:21:17,056 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:21:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:21:17,061 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:17,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:17,062 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:17,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:17,068 INFO L82 PathProgramCache]: Analyzing trace with hash 122367883, now seen corresponding path program 1 times [2021-01-06 17:21:17,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:17,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079555140] [2021-01-06 17:21:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:17,237 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 17:21:17,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079555140] [2021-01-06 17:21:17,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:17,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:21:17,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740168369] [2021-01-06 17:21:17,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:21:17,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:17,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:21:17,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:21:17,263 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:21:17,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:17,285 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2021-01-06 17:21:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:21:17,287 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 17:21:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:17,296 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:21:17,297 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:21:17,300 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 17:21:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:21:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:21:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:21:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-01-06 17:21:17,338 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2021-01-06 17:21:17,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:17,339 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-01-06 17:21:17,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:21:17,339 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-01-06 17:21:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:21:17,340 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:17,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:17,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:21:17,341 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:17,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:17,342 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-01-06 17:21:17,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:17,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666982768] [2021-01-06 17:21:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:17,362 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:17,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143187624] [2021-01-06 17:21:17,366 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 17:21:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:17,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:21:17,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:17,716 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 17:21:17,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666982768] [2021-01-06 17:21:17,717 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:17,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143187624] [2021-01-06 17:21:17,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:17,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:21:17,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943733271] [2021-01-06 17:21:17,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:17,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:17,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:17,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:17,725 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states. [2021-01-06 17:21:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:17,986 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-01-06 17:21:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:21:17,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-06 17:21:17,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:17,989 INFO L225 Difference]: With dead ends: 51 [2021-01-06 17:21:17,989 INFO L226 Difference]: Without dead ends: 49 [2021-01-06 17:21:17,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:21:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-06 17:21:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-01-06 17:21:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 17:21:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-01-06 17:21:17,999 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2021-01-06 17:21:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:18,000 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-01-06 17:21:18,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-01-06 17:21:18,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:21:18,001 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:18,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:18,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:21:18,215 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:18,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:18,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1182906761, now seen corresponding path program 1 times [2021-01-06 17:21:18,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:18,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692750856] [2021-01-06 17:21:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:18,268 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 17:21:18,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692750856] [2021-01-06 17:21:18,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:18,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:21:18,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035353544] [2021-01-06 17:21:18,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:21:18,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:18,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:21:18,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:21:18,271 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2021-01-06 17:21:18,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:18,290 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-01-06 17:21:18,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:21:18,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 17:21:18,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:18,292 INFO L225 Difference]: With dead ends: 44 [2021-01-06 17:21:18,292 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 17:21:18,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:21:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 17:21:18,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-01-06 17:21:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 17:21:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-01-06 17:21:18,300 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2021-01-06 17:21:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:18,300 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-01-06 17:21:18,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:21:18,301 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-01-06 17:21:18,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:21:18,301 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:18,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:18,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:21:18,302 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:18,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:18,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-01-06 17:21:18,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:18,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049910432] [2021-01-06 17:21:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:18,318 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:18,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573187176] [2021-01-06 17:21:18,321 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 17:21:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:18,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:21:18,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:18,465 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 17:21:18,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049910432] [2021-01-06 17:21:18,466 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:18,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573187176] [2021-01-06 17:21:18,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:18,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:21:18,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285790646] [2021-01-06 17:21:18,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:18,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:18,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:18,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:18,469 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2021-01-06 17:21:18,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:18,748 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-01-06 17:21:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:21:18,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:21:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:18,753 INFO L225 Difference]: With dead ends: 74 [2021-01-06 17:21:18,753 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:21:18,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:21:18,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:21:18,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2021-01-06 17:21:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 17:21:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-06 17:21:18,777 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 10 [2021-01-06 17:21:18,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:18,777 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-06 17:21:18,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-06 17:21:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:21:18,778 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:18,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:18,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:18,992 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:18,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:18,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1896102171, now seen corresponding path program 1 times [2021-01-06 17:21:18,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:18,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072297558] [2021-01-06 17:21:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:19,008 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:19,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314745369] [2021-01-06 17:21:19,008 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 17:21:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:19,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:21:19,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:19,114 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 17:21:19,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072297558] [2021-01-06 17:21:19,114 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:19,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314745369] [2021-01-06 17:21:19,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:19,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:21:19,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611435645] [2021-01-06 17:21:19,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:21:19,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:19,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:21:19,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:21:19,117 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 5 states. [2021-01-06 17:21:19,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:19,147 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2021-01-06 17:21:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:21:19,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:21:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:19,149 INFO L225 Difference]: With dead ends: 72 [2021-01-06 17:21:19,149 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 17:21:19,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:19,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 17:21:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-01-06 17:21:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 17:21:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-01-06 17:21:19,155 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 14 [2021-01-06 17:21:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:19,155 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-01-06 17:21:19,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:21:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-01-06 17:21:19,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:21:19,156 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:19,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:19,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:19,369 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:19,371 INFO L82 PathProgramCache]: Analyzing trace with hash -643457925, now seen corresponding path program 1 times [2021-01-06 17:21:19,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:19,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140289186] [2021-01-06 17:21:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:19,386 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:19,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455977678] [2021-01-06 17:21:19,386 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 17:21:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:19,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:21:19,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:19,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140289186] [2021-01-06 17:21:19,494 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:19,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455977678] [2021-01-06 17:21:19,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:19,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:21:19,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832561096] [2021-01-06 17:21:19,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:21:19,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:19,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:21:19,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:21:19,497 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 5 states. [2021-01-06 17:21:19,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:19,538 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-01-06 17:21:19,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:21:19,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-01-06 17:21:19,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:19,541 INFO L225 Difference]: With dead ends: 36 [2021-01-06 17:21:19,541 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 17:21:19,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:19,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 17:21:19,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-01-06 17:21:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 17:21:19,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-01-06 17:21:19,553 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 17 [2021-01-06 17:21:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:19,553 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-01-06 17:21:19,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:21:19,554 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-01-06 17:21:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:21:19,556 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:19,557 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:19,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:19,758 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:19,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:19,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1527669658, now seen corresponding path program 1 times [2021-01-06 17:21:19,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:19,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122226051] [2021-01-06 17:21:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:19,774 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:19,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724241447] [2021-01-06 17:21:19,791 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 17:21:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:19,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:21:19,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:19,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122226051] [2021-01-06 17:21:19,986 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:19,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724241447] [2021-01-06 17:21:19,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:19,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:21:19,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043942177] [2021-01-06 17:21:19,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:21:19,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:19,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:21:19,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:21:19,988 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 8 states. [2021-01-06 17:21:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:20,173 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-01-06 17:21:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:21:20,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2021-01-06 17:21:20,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:20,174 INFO L225 Difference]: With dead ends: 19 [2021-01-06 17:21:20,174 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:21:20,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:21:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:21:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:21:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:21:20,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:21:20,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-01-06 17:21:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:20,176 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:21:20,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:21:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:21:20,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:21:20,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:21:20,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:21:20,611 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:20,611 INFO L189 CegarLoopUtils]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-01-06 17:21:20,612 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:20,612 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:21:20,612 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:21:20,612 INFO L189 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2021-01-06 17:21:20,612 INFO L189 CegarLoopUtils]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2021-01-06 17:21:20,613 INFO L185 CegarLoopUtils]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (<= ~counter~0 0) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse1 (<= 0 ~counter~0) (= ULTIMATE.start_main_~b~0 0)) (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (<= 2 ~counter~0)))) [2021-01-06 17:21:20,613 INFO L189 CegarLoopUtils]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2021-01-06 17:21:20,613 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:20,613 INFO L189 CegarLoopUtils]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-01-06 17:21:20,615 INFO L185 CegarLoopUtils]: At program point L46-3(lines 46 58) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ~counter~0) (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-01-06 17:21:20,616 INFO L189 CegarLoopUtils]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2021-01-06 17:21:20,616 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:20,616 INFO L192 CegarLoopUtils]: At program point L64(lines 23 65) the Hoare annotation is: true [2021-01-06 17:21:20,616 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:20,616 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:20,616 INFO L185 CegarLoopUtils]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (<= 1 ~counter~0) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1)) [2021-01-06 17:21:20,617 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:20,617 INFO L185 CegarLoopUtils]: At program point L15-5(lines 41 42) the Hoare annotation is: (and (<= 1 ~counter~0) (<= 1 ULTIMATE.start_main_~y~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1)) [2021-01-06 17:21:20,617 INFO L189 CegarLoopUtils]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:20,618 INFO L185 CegarLoopUtils]: At program point L15-8(lines 14 20) the Hoare annotation is: false [2021-01-06 17:21:20,618 INFO L189 CegarLoopUtils]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:20,618 INFO L185 CegarLoopUtils]: At program point L15-11(lines 14 20) the Hoare annotation is: false [2021-01-06 17:21:20,618 INFO L189 CegarLoopUtils]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:20,618 INFO L185 CegarLoopUtils]: At program point L15-14(lines 51 52) the Hoare annotation is: false [2021-01-06 17:21:20,619 INFO L189 CegarLoopUtils]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:20,619 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:21:20,619 INFO L185 CegarLoopUtils]: At program point L15-17(lines 14 20) the Hoare annotation is: false [2021-01-06 17:21:20,619 INFO L189 CegarLoopUtils]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:20,620 INFO L192 CegarLoopUtils]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-01-06 17:21:20,620 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:20,620 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:20,620 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:20,621 INFO L189 CegarLoopUtils]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:20,621 INFO L189 CegarLoopUtils]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:20,621 INFO L189 CegarLoopUtils]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:20,624 INFO L189 CegarLoopUtils]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:20,625 INFO L189 CegarLoopUtils]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:20,625 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:21:20,625 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:20,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:21:20 BoogieIcfgContainer [2021-01-06 17:21:20,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:21:20,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:21:20,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:21:20,659 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:21:20,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:21:16" (3/4) ... [2021-01-06 17:21:20,663 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:21:20,674 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-01-06 17:21:20,674 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:21:20,675 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:21:20,675 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:21:20,730 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c-witness.graphml [2021-01-06 17:21:20,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:21:20,732 INFO L168 Benchmark]: Toolchain (without parser) took 4674.59 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 127.5 MB in the beginning and 90.8 MB in the end (delta: 36.8 MB). Peak memory consumption was 69.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:20,732 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:21:20,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.66 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 117.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:20,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.22 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:20,734 INFO L168 Benchmark]: Boogie Preprocessor took 26.12 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 114.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:20,735 INFO L168 Benchmark]: RCFGBuilder took 541.81 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 132.1 MB in the end (delta: -17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:20,736 INFO L168 Benchmark]: TraceAbstraction took 3694.18 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 131.5 MB in the beginning and 94.4 MB in the end (delta: 37.1 MB). Peak memory consumption was 69.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:20,736 INFO L168 Benchmark]: Witness Printer took 71.55 ms. Allocated memory is still 182.5 MB. Free memory was 94.4 MB in the beginning and 90.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:20,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.66 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 117.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.22 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.12 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 114.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 541.81 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 132.1 MB in the end (delta: -17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3694.18 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 131.5 MB in the beginning and 94.4 MB in the end (delta: 37.1 MB). Peak memory consumption was 69.6 MB. Max. memory is 8.0 GB. * Witness Printer took 71.55 ms. Allocated memory is still 182.5 MB. Free memory was 94.4 MB in the beginning and 90.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: 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 7 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((1 <= counter && 1 <= y) && 1 == cond) && r == x) && q == 0) && cond == 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((1 <= y && 1 <= counter) && a == 1) && 1 == cond) && r == x) && q == 0) && cond == 1) && b == y - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((1 <= y && counter <= 0) && a == 0) && r == x) && q == 0) && cond == 1) && 0 <= counter) && b == 0) || (((((q == 1 && x == r + y) && 1 <= y) && 1 == cond) && cond == 1) && 2 <= counter) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((1 <= counter && 1 <= y) && r == x) && q == 0) && cond == 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 314 SDslu, 223 SDs, 0 SdLazy, 159 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=4, 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, 7 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 113 HoareAnnotationTreeSize, 10 FomulaSimplifications, 105 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 4771 SizeOfPredicates, 23 NumberOfNonLiveVariables, 413 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 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...