/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/divbin2_unwindbound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:32:22,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:32:22,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:32:22,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:32:22,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:32:22,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:32:22,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:32:22,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:32:22,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:32:22,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:32:22,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:32:22,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:32:22,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:32:22,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:32:22,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:32:22,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:32:22,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:32:22,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:32:22,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:32:22,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:32:22,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:32:22,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:32:22,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:32:22,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:32:22,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:32:22,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:32:22,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:32:22,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:32:22,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:32:22,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:32:22,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:32:22,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:32:22,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:32:22,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:32:22,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:32:22,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:32:22,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:32:22,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:32:22,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:32:22,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:32:22,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:32:22,258 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:32:22,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:32:22,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:32:22,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:32:22,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:32:22,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:32:22,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:32:22,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:32:22,259 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:32:22,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:32:22,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:32:22,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:32:22,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:32:22,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:32:22,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:32:22,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:32:22,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:32:22,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:32:22,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:32:22,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:32:22,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:32:22,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:32:22,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:32:22,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:32:22,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:32:22,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:32:22,706 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:32:22,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2020-12-23 07:32:22,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/02c55790d/707e21e36ed944b4a3922bded2f38719/FLAG472e16583 [2020-12-23 07:32:23,342 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:32:23,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2020-12-23 07:32:23,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/02c55790d/707e21e36ed944b4a3922bded2f38719/FLAG472e16583 [2020-12-23 07:32:23,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/02c55790d/707e21e36ed944b4a3922bded2f38719 [2020-12-23 07:32:23,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:32:23,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:32:23,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:32:23,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:32:23,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:32:23,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:32:23" (1/1) ... [2020-12-23 07:32:23,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6f07a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:23, skipping insertion in model container [2020-12-23 07:32:23,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:32:23" (1/1) ... [2020-12-23 07:32:23,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:32:23,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:32:23,964 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/divbin2_unwindbound2.i[951,964] 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[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:32:23,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:32:23,993 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:32:24,008 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/divbin2_unwindbound2.i[951,964] 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[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:32:24,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:32:24,032 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:32:24,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24 WrapperNode [2020-12-23 07:32:24,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:32:24,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:32:24,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:32:24,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:32:24,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24" (1/1) ... [2020-12-23 07:32:24,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24" (1/1) ... [2020-12-23 07:32:24,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:32:24,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:32:24,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:32:24,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:32:24,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24" (1/1) ... [2020-12-23 07:32:24,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24" (1/1) ... [2020-12-23 07:32:24,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24" (1/1) ... [2020-12-23 07:32:24,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24" (1/1) ... [2020-12-23 07:32:24,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24" (1/1) ... [2020-12-23 07:32:24,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24" (1/1) ... [2020-12-23 07:32:24,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24" (1/1) ... [2020-12-23 07:32:24,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:32:24,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:32:24,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:32:24,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:32:24,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:32:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:32:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:32:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:32:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:32:24,442 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:32:24,443 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-23 07:32:24,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:32:24 BoogieIcfgContainer [2020-12-23 07:32:24,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:32:24,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:32:24,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:32:24,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:32:24,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:32:23" (1/3) ... [2020-12-23 07:32:24,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b8ba2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:32:24, skipping insertion in model container [2020-12-23 07:32:24,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:32:24" (2/3) ... [2020-12-23 07:32:24,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b8ba2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:32:24, skipping insertion in model container [2020-12-23 07:32:24,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:32:24" (3/3) ... [2020-12-23 07:32:24,456 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound2.i [2020-12-23 07:32:24,464 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:32:24,469 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:32:24,493 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:32:24,606 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:32:24,606 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:32:24,606 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:32:24,606 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:32:24,611 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:32:24,612 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:32:24,614 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:32:24,614 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:32:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-23 07:32:24,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:32:24,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:24,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:24,647 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:24,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:24,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1819218388, now seen corresponding path program 1 times [2020-12-23 07:32:24,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:24,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429586366] [2020-12-23 07:32:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:24,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429586366] [2020-12-23 07:32:24,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:32:24,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:32:24,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922405774] [2020-12-23 07:32:24,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:32:24,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:24,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:32:24,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:32:24,842 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-23 07:32:24,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:24,860 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-12-23 07:32:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:32:24,862 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 07:32:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:24,872 INFO L225 Difference]: With dead ends: 35 [2020-12-23 07:32:24,872 INFO L226 Difference]: Without dead ends: 16 [2020-12-23 07:32:24,875 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 [2020-12-23 07:32:24,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-23 07:32:24,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-23 07:32:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 07:32:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2020-12-23 07:32:24,915 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 7 [2020-12-23 07:32:24,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:24,915 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-12-23 07:32:24,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:32:24,916 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-12-23 07:32:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:32:24,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:24,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:24,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:32:24,917 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:24,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:24,918 INFO L82 PathProgramCache]: Analyzing trace with hash 177936045, now seen corresponding path program 1 times [2020-12-23 07:32:24,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:24,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451786040] [2020-12-23 07:32:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:24,935 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:24,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625274423] [2020-12-23 07:32:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:25,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 07:32:25,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:25,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451786040] [2020-12-23 07:32:25,099 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:25,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625274423] [2020-12-23 07:32:25,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:32:25,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:32:25,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585581508] [2020-12-23 07:32:25,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:32:25,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:25,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:32:25,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:32:25,104 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2020-12-23 07:32:25,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:25,128 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-12-23 07:32:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:32:25,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 07:32:25,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:25,131 INFO L225 Difference]: With dead ends: 29 [2020-12-23 07:32:25,131 INFO L226 Difference]: Without dead ends: 18 [2020-12-23 07:32:25,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:32:25,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-23 07:32:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-23 07:32:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-23 07:32:25,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-12-23 07:32:25,137 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 8 [2020-12-23 07:32:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:25,137 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-12-23 07:32:25,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:32:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-12-23 07:32:25,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:32:25,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:25,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:25,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:32:25,353 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:25,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:25,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1269844846, now seen corresponding path program 1 times [2020-12-23 07:32:25,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:25,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981283001] [2020-12-23 07:32:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:25,375 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:25,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707819875] [2020-12-23 07:32:25,376 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 [2020-12-23 07:32:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:25,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:32:25,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:25,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981283001] [2020-12-23 07:32:25,517 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:25,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707819875] [2020-12-23 07:32:25,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:32:25,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:32:25,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532619479] [2020-12-23 07:32:25,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:32:25,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:25,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:32:25,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:32:25,520 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2020-12-23 07:32:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:25,606 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-12-23 07:32:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:32:25,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-23 07:32:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:25,608 INFO L225 Difference]: With dead ends: 34 [2020-12-23 07:32:25,608 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 07:32:25,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:32:25,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 07:32:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-12-23 07:32:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 07:32:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-12-23 07:32:25,615 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 9 [2020-12-23 07:32:25,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:25,615 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-12-23 07:32:25,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:32:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2020-12-23 07:32:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:32:25,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:25,616 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:25,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:25,834 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:25,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:25,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1820707731, now seen corresponding path program 1 times [2020-12-23 07:32:25,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:25,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371596923] [2020-12-23 07:32:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:25,851 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:25,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061923140] [2020-12-23 07:32:25,852 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 [2020-12-23 07:32:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:25,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:32:25,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:25,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371596923] [2020-12-23 07:32:25,934 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:25,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061923140] [2020-12-23 07:32:25,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:32:25,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:32:25,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38267392] [2020-12-23 07:32:25,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:32:25,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:25,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:32:25,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:32:25,937 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 5 states. [2020-12-23 07:32:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:25,967 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-12-23 07:32:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:32:25,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 07:32:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:25,969 INFO L225 Difference]: With dead ends: 36 [2020-12-23 07:32:25,969 INFO L226 Difference]: Without dead ends: 25 [2020-12-23 07:32:25,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:32:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-23 07:32:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-23 07:32:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 07:32:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-12-23 07:32:25,975 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 11 [2020-12-23 07:32:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:25,976 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-12-23 07:32:25,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:32:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-12-23 07:32:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:32:25,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:25,977 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:26,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:26,191 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:26,192 INFO L82 PathProgramCache]: Analyzing trace with hash 656159560, now seen corresponding path program 1 times [2020-12-23 07:32:26,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:26,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975561110] [2020-12-23 07:32:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:26,207 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:26,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835317953] [2020-12-23 07:32:26,208 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 [2020-12-23 07:32:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:26,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:32:26,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:26,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975561110] [2020-12-23 07:32:26,303 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:26,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835317953] [2020-12-23 07:32:26,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:32:26,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:32:26,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265988684] [2020-12-23 07:32:26,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:32:26,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:26,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:32:26,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:32:26,305 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 6 states. [2020-12-23 07:32:26,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:26,337 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-12-23 07:32:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:32:26,337 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 07:32:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:26,338 INFO L225 Difference]: With dead ends: 32 [2020-12-23 07:32:26,338 INFO L226 Difference]: Without dead ends: 21 [2020-12-23 07:32:26,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:32:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-23 07:32:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-23 07:32:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-23 07:32:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-12-23 07:32:26,343 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2020-12-23 07:32:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:26,344 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-12-23 07:32:26,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:32:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-12-23 07:32:26,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:32:26,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:26,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:26,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:26,561 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:26,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1133927788, now seen corresponding path program 1 times [2020-12-23 07:32:26,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:26,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557458758] [2020-12-23 07:32:26,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:26,602 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:26,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168536674] [2020-12-23 07:32:26,602 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 [2020-12-23 07:32:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:26,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:32:26,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:26,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557458758] [2020-12-23 07:32:26,738 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:26,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168536674] [2020-12-23 07:32:26,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:32:26,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:32:26,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314640560] [2020-12-23 07:32:26,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:32:26,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:26,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:32:26,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:32:26,741 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2020-12-23 07:32:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:26,816 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-12-23 07:32:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:32:26,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 07:32:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:26,818 INFO L225 Difference]: With dead ends: 27 [2020-12-23 07:32:26,818 INFO L226 Difference]: Without dead ends: 16 [2020-12-23 07:32:26,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:32:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-23 07:32:26,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-23 07:32:26,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 07:32:26,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-23 07:32:26,822 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-12-23 07:32:26,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:26,823 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-23 07:32:26,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:32:26,823 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-23 07:32:26,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:32:26,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:26,824 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:27,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:32:27,033 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:27,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:27,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1666872375, now seen corresponding path program 1 times [2020-12-23 07:32:27,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:27,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845334240] [2020-12-23 07:32:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:27,060 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:27,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356036292] [2020-12-23 07:32:27,061 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:27,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:32:27,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:27,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845334240] [2020-12-23 07:32:27,144 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:27,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356036292] [2020-12-23 07:32:27,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:32:27,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:32:27,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619723196] [2020-12-23 07:32:27,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 07:32:27,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:27,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 07:32:27,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 07:32:27,147 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-12-23 07:32:27,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:27,155 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-23 07:32:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 07:32:27,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 07:32:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:27,156 INFO L225 Difference]: With dead ends: 16 [2020-12-23 07:32:27,156 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:32:27,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 07:32:27,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:32:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:32:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:32:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:32:27,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-23 07:32:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:27,158 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:32:27,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 07:32:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:32:27,159 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:32:27,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:27,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:32:27,551 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-23 07:32:27,551 INFO L189 CegarLoopUtils]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-12-23 07:32:27,552 INFO L185 CegarLoopUtils]: At program point L19-2(line 40) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (< (mod ULTIMATE.start_main_~r~0 4294967296) (mod ULTIMATE.start_main_~b~0 4294967296)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) (<= 2 ~counter~0)) [2020-12-23 07:32:27,552 INFO L189 CegarLoopUtils]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2020-12-23 07:32:27,552 INFO L192 CegarLoopUtils]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2020-12-23 07:32:27,552 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:32:27,552 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:32:27,552 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:32:27,553 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-23 07:32:27,553 INFO L189 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-12-23 07:32:27,553 INFO L189 CegarLoopUtils]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-12-23 07:32:27,553 INFO L192 CegarLoopUtils]: At program point L49(lines 26 50) the Hoare annotation is: true [2020-12-23 07:32:27,553 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:32:27,553 INFO L189 CegarLoopUtils]: For program point L38(lines 38 47) no Hoare annotation was computed. [2020-12-23 07:32:27,553 INFO L189 CegarLoopUtils]: For program point L38-2(lines 38 47) no Hoare annotation was computed. [2020-12-23 07:32:27,553 INFO L189 CegarLoopUtils]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2020-12-23 07:32:27,554 INFO L185 CegarLoopUtils]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~q~0 0)) (.cse1 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) (<= ~counter~0 0) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) .cse0 .cse1 (<= 0 ~counter~0)) (and (<= 1 ~counter~0) (<= 1 (mod ULTIMATE.start_main_~r~0 4294967296)) .cse0 .cse1))) [2020-12-23 07:32:27,554 INFO L189 CegarLoopUtils]: For program point L43(lines 43 46) no Hoare annotation was computed. [2020-12-23 07:32:27,554 INFO L189 CegarLoopUtils]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2020-12-23 07:32:27,554 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2020-12-23 07:32:27,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:32:27 BoogieIcfgContainer [2020-12-23 07:32:27,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:32:27,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:32:27,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:32:27,574 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:32:27,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:32:24" (3/4) ... [2020-12-23 07:32:27,577 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 07:32:27,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-23 07:32:27,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 07:32:27,589 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:32:27,589 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:32:27,631 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/divbin2_unwindbound2.i-witness.graphml [2020-12-23 07:32:27,631 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:32:27,633 INFO L168 Benchmark]: Toolchain (without parser) took 3901.79 ms. Allocated memory was 152.0 MB in the beginning and 195.0 MB in the end (delta: 43.0 MB). Free memory was 126.8 MB in the beginning and 118.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 52.9 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:27,634 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:32:27,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.17 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 116.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:27,635 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.94 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:27,636 INFO L168 Benchmark]: Boogie Preprocessor took 24.09 ms. Allocated memory is still 152.0 MB. Free memory was 115.2 MB in the beginning and 114.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:27,637 INFO L168 Benchmark]: RCFGBuilder took 349.39 ms. Allocated memory is still 152.0 MB. Free memory was 114.1 MB in the beginning and 101.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:27,637 INFO L168 Benchmark]: TraceAbstraction took 3125.91 ms. Allocated memory was 152.0 MB in the beginning and 195.0 MB in the end (delta: 43.0 MB). Free memory was 100.6 MB in the beginning and 121.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:27,638 INFO L168 Benchmark]: Witness Printer took 57.98 ms. Allocated memory is still 195.0 MB. Free memory was 121.0 MB in the beginning and 118.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:27,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 299.17 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 116.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.94 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.09 ms. Allocated memory is still 152.0 MB. Free memory was 115.2 MB in the beginning and 114.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 349.39 ms. Allocated memory is still 152.0 MB. Free memory was 114.1 MB in the beginning and 101.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3125.91 ms. Allocated memory was 152.0 MB in the beginning and 195.0 MB in the end (delta: 43.0 MB). Free memory was 100.6 MB in the beginning and 121.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 8.0 GB. * Witness Printer took 57.98 ms. Allocated memory is still 195.0 MB. Free memory was 121.0 MB in the beginning and 118.3 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 - 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 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((B == 1 && counter <= 0) && B == b) && q == 0) && A == r) && 0 <= counter) || (((1 <= counter && 1 <= r % 4294967296) && q == 0) && A == r) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((B == 1 && r % 4294967296 < b % 4294967296) && 1 == cond) && B == b) && q == 0) && A == r) && 2 <= counter - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 50 SDslu, 152 SDs, 0 SdLazy, 108 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 63 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 3286 SizeOfPredicates, 15 NumberOfNonLiveVariables, 368 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 5/10 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...