/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/divbin_unwindbound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:28:15,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:28:15,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:28:16,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:28:16,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:28:16,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:28:16,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:28:16,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:28:16,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:28:16,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:28:16,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:28:16,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:28:16,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:28:16,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:28:16,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:28:16,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:28:16,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:28:16,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:28:16,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:28:16,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:28:16,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:28:16,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:28:16,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:28:16,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:28:16,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:28:16,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:28:16,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:28:16,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:28:16,113 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 17:28:16,140 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:28:16,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:28:16,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:28:16,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:28:16,142 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:28:16,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:28:16,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:28:16,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:28:16,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:28:16,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:28:16,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:28:16,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:28:16,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:28:16,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:28:16,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:28:16,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:28:16,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:28:16,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:28:16,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:28:16,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:28:16,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:28:16,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:28:16,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:28:16,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:28:16,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:28:16,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:28:16,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:28:16,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:28:16,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:28:16,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:28:16,615 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:28:16,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2021-01-06 17:28:16,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d92cce970/1674cbf2fff245e4b78595324abf2567/FLAG8274a6e6b [2021-01-06 17:28:17,411 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:28:17,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2021-01-06 17:28:17,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d92cce970/1674cbf2fff245e4b78595324abf2567/FLAG8274a6e6b [2021-01-06 17:28:17,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d92cce970/1674cbf2fff245e4b78595324abf2567 [2021-01-06 17:28:17,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:28:17,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:28:17,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:28:17,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:28:17,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:28:17,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:28:17" (1/1) ... [2021-01-06 17:28:17,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667e8b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:17, skipping insertion in model container [2021-01-06 17:28:17,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:28:17" (1/1) ... [2021-01-06 17:28:17,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:28:17,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:28:17,991 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/divbin_unwindbound2.i[950,963] 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,] [2021-01-06 17:28:18,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:28:18,049 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:28:18,070 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/divbin_unwindbound2.i[950,963] 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,] [2021-01-06 17:28:18,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:28:18,118 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:28:18,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18 WrapperNode [2021-01-06 17:28:18,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:28:18,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:28:18,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:28:18,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:28:18,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18" (1/1) ... [2021-01-06 17:28:18,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18" (1/1) ... [2021-01-06 17:28:18,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:28:18,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:28:18,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:28:18,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:28:18,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18" (1/1) ... [2021-01-06 17:28:18,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18" (1/1) ... [2021-01-06 17:28:18,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18" (1/1) ... [2021-01-06 17:28:18,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18" (1/1) ... [2021-01-06 17:28:18,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18" (1/1) ... [2021-01-06 17:28:18,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18" (1/1) ... [2021-01-06 17:28:18,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18" (1/1) ... [2021-01-06 17:28:18,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:28:18,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:28:18,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:28:18,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:28:18,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18" (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 17:28:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:28:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:28:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:28:18,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:28:18,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:28:18,714 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-01-06 17:28:18,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:28:18 BoogieIcfgContainer [2021-01-06 17:28:18,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:28:18,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:28:18,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:28:18,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:28:18,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:28:17" (1/3) ... [2021-01-06 17:28:18,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351303dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:28:18, skipping insertion in model container [2021-01-06 17:28:18,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:28:18" (2/3) ... [2021-01-06 17:28:18,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351303dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:28:18, skipping insertion in model container [2021-01-06 17:28:18,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:28:18" (3/3) ... [2021-01-06 17:28:18,726 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound2.i [2021-01-06 17:28:18,732 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:28:18,737 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:28:18,758 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:28:18,786 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:28:18,787 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:28:18,787 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:28:18,787 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:28:18,787 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:28:18,787 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:28:18,788 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:28:18,788 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:28:18,804 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-01-06 17:28:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:28:18,810 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:18,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:18,812 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:18,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:18,819 INFO L82 PathProgramCache]: Analyzing trace with hash 344827834, now seen corresponding path program 1 times [2021-01-06 17:28:18,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:18,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303397280] [2021-01-06 17:28:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:28:18,996 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 17:28:18,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303397280] [2021-01-06 17:28:18,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:28:18,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:28:18,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302669494] [2021-01-06 17:28:19,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:28:19,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:28:19,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:28:19,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:28:19,025 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2021-01-06 17:28:19,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:19,044 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2021-01-06 17:28:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:28:19,046 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 17:28:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:19,057 INFO L225 Difference]: With dead ends: 45 [2021-01-06 17:28:19,057 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 17:28:19,060 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 17:28:19,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 17:28:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-01-06 17:28:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:28:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-01-06 17:28:19,104 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2021-01-06 17:28:19,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:19,104 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-01-06 17:28:19,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:28:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-01-06 17:28:19,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:28:19,105 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:19,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:19,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:28:19,106 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:19,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:19,107 INFO L82 PathProgramCache]: Analyzing trace with hash 514095505, now seen corresponding path program 1 times [2021-01-06 17:28:19,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:19,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297251520] [2021-01-06 17:28:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:19,129 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:28:19,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569570493] [2021-01-06 17:28:19,130 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 17:28:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:28:19,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:28:19,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:28:19,339 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 17:28:19,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297251520] [2021-01-06 17:28:19,340 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:28:19,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569570493] [2021-01-06 17:28:19,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:28:19,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:28:19,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389652966] [2021-01-06 17:28:19,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:28:19,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:28:19,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:28:19,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:28:19,345 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 4 states. [2021-01-06 17:28:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:19,380 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2021-01-06 17:28:19,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:28:19,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-06 17:28:19,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:19,382 INFO L225 Difference]: With dead ends: 33 [2021-01-06 17:28:19,382 INFO L226 Difference]: Without dead ends: 22 [2021-01-06 17:28:19,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 17:28:19,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-06 17:28:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-01-06 17:28:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 17:28:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-01-06 17:28:19,389 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2021-01-06 17:28:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:19,389 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-01-06 17:28:19,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:28:19,390 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-01-06 17:28:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:28:19,391 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:19,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:19,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:28:19,606 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:19,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:19,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1194113768, now seen corresponding path program 1 times [2021-01-06 17:28:19,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:19,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034699734] [2021-01-06 17:28:19,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:19,628 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:28:19,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994980262] [2021-01-06 17:28:19,629 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 17:28:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:28:19,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:28:19,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:28:19,899 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 17:28:19,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034699734] [2021-01-06 17:28:19,900 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:28:19,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994980262] [2021-01-06 17:28:19,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:28:19,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 17:28:19,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696905743] [2021-01-06 17:28:19,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:28:19,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:28:19,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:28:19,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:28:19,903 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 7 states. [2021-01-06 17:28:20,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:20,131 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2021-01-06 17:28:20,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:28:20,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-01-06 17:28:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:20,133 INFO L225 Difference]: With dead ends: 40 [2021-01-06 17:28:20,134 INFO L226 Difference]: Without dead ends: 33 [2021-01-06 17:28:20,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:28:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-01-06 17:28:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2021-01-06 17:28:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 17:28:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-01-06 17:28:20,141 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 13 [2021-01-06 17:28:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:20,142 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-01-06 17:28:20,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:28:20,142 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-01-06 17:28:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:28:20,143 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:20,143 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:20,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:28:20,357 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:20,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:20,359 INFO L82 PathProgramCache]: Analyzing trace with hash 483460221, now seen corresponding path program 1 times [2021-01-06 17:28:20,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:20,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669133655] [2021-01-06 17:28:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:20,378 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:28:20,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273747988] [2021-01-06 17:28:20,378 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 17:28:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:28:20,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:28:20,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:28:20,519 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 17:28:20,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669133655] [2021-01-06 17:28:20,519 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:28:20,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273747988] [2021-01-06 17:28:20,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:28:20,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:28:20,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892930839] [2021-01-06 17:28:20,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:28:20,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:28:20,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:28:20,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:28:20,522 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2021-01-06 17:28:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:20,554 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-01-06 17:28:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:28:20,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 17:28:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:20,556 INFO L225 Difference]: With dead ends: 42 [2021-01-06 17:28:20,556 INFO L226 Difference]: Without dead ends: 31 [2021-01-06 17:28:20,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:28:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-01-06 17:28:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-01-06 17:28:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-06 17:28:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-01-06 17:28:20,563 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 15 [2021-01-06 17:28:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:20,564 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-01-06 17:28:20,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:28:20,564 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-01-06 17:28:20,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:28:20,565 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:20,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:20,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:28:20,779 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:20,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:20,781 INFO L82 PathProgramCache]: Analyzing trace with hash -2143807572, now seen corresponding path program 1 times [2021-01-06 17:28:20,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:20,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259197166] [2021-01-06 17:28:20,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:20,801 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:28:20,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895199880] [2021-01-06 17:28:20,802 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 17:28:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:28:20,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:28:20,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:28:20,899 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 17:28:20,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259197166] [2021-01-06 17:28:20,899 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:28:20,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895199880] [2021-01-06 17:28:20,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:28:20,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:28:20,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981371871] [2021-01-06 17:28:20,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:28:20,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:28:20,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:28:20,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:28:20,902 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 6 states. [2021-01-06 17:28:20,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:20,941 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-01-06 17:28:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:28:20,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 17:28:20,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:20,944 INFO L225 Difference]: With dead ends: 43 [2021-01-06 17:28:20,945 INFO L226 Difference]: Without dead ends: 25 [2021-01-06 17:28:20,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:28:20,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-06 17:28:20,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-01-06 17:28:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 17:28:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-01-06 17:28:20,959 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2021-01-06 17:28:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:20,961 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-01-06 17:28:20,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:28:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-01-06 17:28:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:28:20,963 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:20,963 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:21,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:28:21,164 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:21,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2033562946, now seen corresponding path program 1 times [2021-01-06 17:28:21,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:21,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454496212] [2021-01-06 17:28:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:21,192 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:28:21,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660657014] [2021-01-06 17:28:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 17:28:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:28:21,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:28:21,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:28:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:28:21,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454496212] [2021-01-06 17:28:21,463 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:28:21,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660657014] [2021-01-06 17:28:21,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:28:21,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:28:21,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989186259] [2021-01-06 17:28:21,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:28:21,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:28:21,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:28:21,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:28:21,477 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 9 states. [2021-01-06 17:28:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:21,917 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-01-06 17:28:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:28:21,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2021-01-06 17:28:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:21,919 INFO L225 Difference]: With dead ends: 31 [2021-01-06 17:28:21,919 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 17:28:21,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:28:21,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 17:28:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-01-06 17:28:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:28:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-01-06 17:28:21,928 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 17 [2021-01-06 17:28:21,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:21,928 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-01-06 17:28:21,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:28:21,928 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-01-06 17:28:21,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:28:21,930 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:21,930 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:22,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:28:22,145 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:22,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:22,146 INFO L82 PathProgramCache]: Analyzing trace with hash 348654179, now seen corresponding path program 1 times [2021-01-06 17:28:22,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:22,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161774856] [2021-01-06 17:28:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:22,162 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:28:22,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113340220] [2021-01-06 17:28:22,163 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 [2021-01-06 17:28:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:28:22,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:28:22,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:28:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:28:22,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161774856] [2021-01-06 17:28:22,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:28:22,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113340220] [2021-01-06 17:28:22,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:28:22,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:28:22,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788924658] [2021-01-06 17:28:22,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 17:28:22,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:28:22,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 17:28:22,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:28:22,242 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 3 states. [2021-01-06 17:28:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:22,257 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-01-06 17:28:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 17:28:22,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-06 17:28:22,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:22,258 INFO L225 Difference]: With dead ends: 20 [2021-01-06 17:28:22,259 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:28:22,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:28:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:28:22,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:28:22,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:28:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:28:22,261 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-01-06 17:28:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:22,263 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:28:22,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 17:28:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:28:22,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:28:22,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:28:22,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:28:22,731 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-01-06 17:28:22,785 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-01-06 17:28:22,785 INFO L189 CegarLoopUtils]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-01-06 17:28:22,785 INFO L185 CegarLoopUtils]: At program point L19-2(line 42) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~b~0 4294967296))) (and (< (mod ULTIMATE.start_main_~r~0 4294967296) .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (< .cse0 2147483647) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) (<= 2 ~counter~0))) [2021-01-06 17:28:22,785 INFO L189 CegarLoopUtils]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-01-06 17:28:22,786 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-01-06 17:28:22,786 INFO L189 CegarLoopUtils]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2021-01-06 17:28:22,786 INFO L192 CegarLoopUtils]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-01-06 17:28:22,786 INFO L189 CegarLoopUtils]: For program point L40(lines 40 49) no Hoare annotation was computed. [2021-01-06 17:28:22,786 INFO L189 CegarLoopUtils]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2021-01-06 17:28:22,786 INFO L189 CegarLoopUtils]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2021-01-06 17:28:22,787 INFO L185 CegarLoopUtils]: At program point L36-3(lines 36 39) the Hoare annotation is: (let ((.cse4 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse0 (<= 1 .cse4)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 (<= ~counter~0 0) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) .cse1 (< (mod ULTIMATE.start_main_~b~0 4294967296) 2147483647) .cse2 .cse3 (<= 0 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (< (div (+ (mod ULTIMATE.start_main_~r~0 4294967296) (- 1)) (- 4294967296)) 1) (< .cse4 2147483647) .cse1 .cse2 .cse3)))) [2021-01-06 17:28:22,787 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:28:22,787 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:28:22,787 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:28:22,787 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-01-06 17:28:22,788 INFO L189 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-01-06 17:28:22,788 INFO L189 CegarLoopUtils]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-01-06 17:28:22,788 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-01-06 17:28:22,788 INFO L189 CegarLoopUtils]: For program point L16-2(line 16) no Hoare annotation was computed. [2021-01-06 17:28:22,788 INFO L189 CegarLoopUtils]: For program point L45(lines 45 48) no Hoare annotation was computed. [2021-01-06 17:28:22,788 INFO L189 CegarLoopUtils]: For program point L45-2(lines 26 52) no Hoare annotation was computed. [2021-01-06 17:28:22,788 INFO L189 CegarLoopUtils]: For program point L37(line 37) no Hoare annotation was computed. [2021-01-06 17:28:22,788 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:28:22,789 INFO L192 CegarLoopUtils]: At program point L51(lines 26 52) the Hoare annotation is: true [2021-01-06 17:28:22,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:28:22 BoogieIcfgContainer [2021-01-06 17:28:22,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:28:22,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:28:22,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:28:22,810 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:28:22,811 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:28:18" (3/4) ... [2021-01-06 17:28:22,815 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:28:22,827 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-01-06 17:28:22,828 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:28:22,828 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:28:22,828 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:28:22,922 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/divbin_unwindbound2.i-witness.graphml [2021-01-06 17:28:22,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:28:22,927 INFO L168 Benchmark]: Toolchain (without parser) took 5136.22 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 128.5 MB in the beginning and 92.8 MB in the end (delta: 35.7 MB). Peak memory consumption was 68.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:28:22,928 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory was 126.8 MB in the beginning and 126.8 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:28:22,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.94 ms. Allocated memory is still 153.1 MB. Free memory was 128.3 MB in the beginning and 118.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:28:22,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.01 ms. Allocated memory is still 153.1 MB. Free memory was 118.2 MB in the beginning and 116.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:28:22,932 INFO L168 Benchmark]: Boogie Preprocessor took 50.50 ms. Allocated memory is still 153.1 MB. Free memory was 116.7 MB in the beginning and 115.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:28:22,933 INFO L168 Benchmark]: RCFGBuilder took 478.50 ms. Allocated memory is still 153.1 MB. Free memory was 115.5 MB in the beginning and 134.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:28:22,936 INFO L168 Benchmark]: TraceAbstraction took 4091.35 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 134.8 MB in the beginning and 95.5 MB in the end (delta: 39.3 MB). Peak memory consumption was 70.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:28:22,937 INFO L168 Benchmark]: Witness Printer took 112.87 ms. Allocated memory is still 184.5 MB. Free memory was 95.5 MB in the beginning and 92.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:28:22,946 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 153.1 MB. Free memory was 126.8 MB in the beginning and 126.8 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 329.94 ms. Allocated memory is still 153.1 MB. Free memory was 128.3 MB in the beginning and 118.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 64.01 ms. Allocated memory is still 153.1 MB. Free memory was 118.2 MB in the beginning and 116.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.50 ms. Allocated memory is still 153.1 MB. Free memory was 116.7 MB in the beginning and 115.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 478.50 ms. Allocated memory is still 153.1 MB. Free memory was 115.5 MB in the beginning and 134.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4091.35 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 134.8 MB in the beginning and 95.5 MB in the end (delta: 39.3 MB). Peak memory consumption was 70.8 MB. Max. memory is 8.0 GB. * Witness Printer took 112.87 ms. Allocated memory is still 184.5 MB. Free memory was 95.5 MB in the beginning and 92.8 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: 42]: Loop Invariant Derived loop invariant: ((((((r % 4294967296 < b % 4294967296 && 1 == cond) && B == b) && q == 0) && b % 4294967296 < 2147483647) && cond == 1) && A == r) && 2 <= counter - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((1 <= B % 4294967296 && counter <= 0) && B == b) && q == 0) && b % 4294967296 < 2147483647) && cond == 1) && A == r) && 0 <= counter) || ((((((1 <= counter && 1 <= B % 4294967296) && (r % 4294967296 + -1) / -4294967296 < 1) && B % 4294967296 < 2147483647) && q == 0) && cond == 1) && A == r) - 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, 24 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 166 SDslu, 194 SDs, 0 SdLazy, 150 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 95 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 6790 SizeOfPredicates, 21 NumberOfNonLiveVariables, 432 ConjunctsInSsa, 69 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...