/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/hard2_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:50:06,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:50:06,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:50:06,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:50:06,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:50:06,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:50:06,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:50:06,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:50:06,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:50:06,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:50:06,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:50:06,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:50:06,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:50:06,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:50:06,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:50:06,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:50:06,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:50:06,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:50:06,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:50:06,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:50:06,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:50:06,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:50:06,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:50:06,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:50:06,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:50:06,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:50:06,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:50:06,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:50:06,809 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 17:50:06,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:50:06,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:50:06,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:50:06,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:50:06,839 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:50:06,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:50:06,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:50:06,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:50:06,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:50:06,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:50:06,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:50:06,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:50:06,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:50:06,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:50:06,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:50:06,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:50:06,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:50:06,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:50:06,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:50:06,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:50:06,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:50:06,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:50:06,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:50:06,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:50:06,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:50:06,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:50:07,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:50:07,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:50:07,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:50:07,243 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:50:07,243 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:50:07,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2021-01-06 17:50:07,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/96b965748/d1df7381c37b494f9f50a08230fc4778/FLAG9b57b9ba5 [2021-01-06 17:50:08,096 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:50:08,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2021-01-06 17:50:08,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/96b965748/d1df7381c37b494f9f50a08230fc4778/FLAG9b57b9ba5 [2021-01-06 17:50:08,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/96b965748/d1df7381c37b494f9f50a08230fc4778 [2021-01-06 17:50:08,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:50:08,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:50:08,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:50:08,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:50:08,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:50:08,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d919241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08, skipping insertion in model container [2021-01-06 17:50:08,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:50:08,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:50:08,684 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/hard2_valuebound20.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:50:08,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:50:08,715 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:50:08,731 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/hard2_valuebound20.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:50:08,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:50:08,757 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:50:08,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08 WrapperNode [2021-01-06 17:50:08,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:50:08,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:50:08,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:50:08,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:50:08,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:50:08,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:50:08,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:50:08,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:50:08,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:50:08,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:50:08,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:50:08,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:50:08,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:50:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:50:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:50:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:50:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:50:09,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:50:09,236 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-01-06 17:50:09,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:09 BoogieIcfgContainer [2021-01-06 17:50:09,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:50:09,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:50:09,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:50:09,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:50:09,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:50:08" (1/3) ... [2021-01-06 17:50:09,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf7aeb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:50:09, skipping insertion in model container [2021-01-06 17:50:09,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (2/3) ... [2021-01-06 17:50:09,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf7aeb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:50:09, skipping insertion in model container [2021-01-06 17:50:09,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:09" (3/3) ... [2021-01-06 17:50:09,247 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound20.c [2021-01-06 17:50:09,254 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:50:09,260 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:50:09,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:50:09,322 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:50:09,322 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:50:09,323 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:50:09,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:50:09,323 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:50:09,323 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:50:09,323 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:50:09,323 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:50:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-01-06 17:50:09,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:50:09,372 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:09,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:09,374 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:09,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:09,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-01-06 17:50:09,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:09,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407931384] [2021-01-06 17:50:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:09,583 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 17:50:09,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407931384] [2021-01-06 17:50:09,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:09,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:50:09,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435119678] [2021-01-06 17:50:09,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:50:09,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:09,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:50:09,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:50:09,609 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2021-01-06 17:50:09,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:09,632 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2021-01-06 17:50:09,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:50:09,634 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:50:09,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:09,643 INFO L225 Difference]: With dead ends: 75 [2021-01-06 17:50:09,643 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 17:50:09,647 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 17:50:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 17:50:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-01-06 17:50:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:50:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-01-06 17:50:09,687 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-01-06 17:50:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:09,688 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-01-06 17:50:09,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:50:09,688 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-01-06 17:50:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:50:09,688 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:09,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:09,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:50:09,689 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:09,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:09,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-01-06 17:50:09,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:09,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519665256] [2021-01-06 17:50:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:09,767 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 17:50:09,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519665256] [2021-01-06 17:50:09,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:09,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:50:09,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509124546] [2021-01-06 17:50:09,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:50:09,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:09,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:50:09,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:50:09,772 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2021-01-06 17:50:09,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:09,854 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-01-06 17:50:09,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:50:09,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-06 17:50:09,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:09,857 INFO L225 Difference]: With dead ends: 54 [2021-01-06 17:50:09,857 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:50:09,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:50:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:50:09,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-01-06 17:50:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 17:50:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-01-06 17:50:09,867 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2021-01-06 17:50:09,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:09,867 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-01-06 17:50:09,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:50:09,868 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-01-06 17:50:09,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:50:09,868 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:09,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:09,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:50:09,869 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:09,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:09,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-01-06 17:50:09,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:09,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084548065] [2021-01-06 17:50:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:09,938 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 17:50:09,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084548065] [2021-01-06 17:50:09,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:09,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:50:09,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999283526] [2021-01-06 17:50:09,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:50:09,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:09,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:50:09,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:50:09,941 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2021-01-06 17:50:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:10,057 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-01-06 17:50:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:50:10,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 17:50:10,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:10,059 INFO L225 Difference]: With dead ends: 52 [2021-01-06 17:50:10,059 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:50:10,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:50:10,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:50:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2021-01-06 17:50:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 17:50:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-01-06 17:50:10,082 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2021-01-06 17:50:10,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:10,082 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-01-06 17:50:10,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:50:10,082 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-01-06 17:50:10,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:50:10,083 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:10,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:10,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:50:10,085 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:10,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:10,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-01-06 17:50:10,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:10,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897497499] [2021-01-06 17:50:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:10,130 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:10,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046870354] [2021-01-06 17:50:10,131 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 17:50:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:10,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:50:10,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:10,273 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 17:50:10,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897497499] [2021-01-06 17:50:10,274 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:10,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046870354] [2021-01-06 17:50:10,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:10,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:50:10,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769090007] [2021-01-06 17:50:10,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:50:10,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:10,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:50:10,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:50:10,277 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2021-01-06 17:50:10,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:10,439 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-01-06 17:50:10,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:50:10,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 17:50:10,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:10,442 INFO L225 Difference]: With dead ends: 72 [2021-01-06 17:50:10,443 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:50:10,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:50:10,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:50:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-01-06 17:50:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 17:50:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-01-06 17:50:10,481 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2021-01-06 17:50:10,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:10,482 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-01-06 17:50:10,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:50:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-01-06 17:50:10,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:50:10,483 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:10,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:10,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:10,698 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:10,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:10,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1783857492, now seen corresponding path program 1 times [2021-01-06 17:50:10,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:10,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175563768] [2021-01-06 17:50:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:10,722 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:10,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029920533] [2021-01-06 17:50:10,722 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 17:50:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:10,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:50:10,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:10,871 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 17:50:10,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175563768] [2021-01-06 17:50:10,873 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:10,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029920533] [2021-01-06 17:50:10,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:10,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:50:10,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611802342] [2021-01-06 17:50:10,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:50:10,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:10,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:50:10,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:50:10,879 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 5 states. [2021-01-06 17:50:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:10,970 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-01-06 17:50:10,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:50:10,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:50:10,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:10,971 INFO L225 Difference]: With dead ends: 63 [2021-01-06 17:50:10,971 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:50:10,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:50:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:50:10,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-01-06 17:50:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 17:50:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-01-06 17:50:10,979 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2021-01-06 17:50:10,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:10,980 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-01-06 17:50:10,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:50:10,980 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-01-06 17:50:10,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:50:10,981 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:10,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:11,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:11,195 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:11,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:11,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2021-01-06 17:50:11,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:11,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944984004] [2021-01-06 17:50:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:11,211 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:11,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471048231] [2021-01-06 17:50:11,212 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 17:50:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:11,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:50:11,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:11,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:11,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944984004] [2021-01-06 17:50:11,343 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:11,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471048231] [2021-01-06 17:50:11,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:11,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:50:11,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082871424] [2021-01-06 17:50:11,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:50:11,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:11,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:50:11,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:50:11,346 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2021-01-06 17:50:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:11,508 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-01-06 17:50:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:50:11,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 17:50:11,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:11,511 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:50:11,511 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:50:11,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:50:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2021-01-06 17:50:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-06 17:50:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2021-01-06 17:50:11,532 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 18 [2021-01-06 17:50:11,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:11,532 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2021-01-06 17:50:11,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:50:11,532 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2021-01-06 17:50:11,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:50:11,535 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:11,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:11,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:11,750 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:11,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:11,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2021-01-06 17:50:11,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:11,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992735592] [2021-01-06 17:50:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:11,765 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:11,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768618115] [2021-01-06 17:50:11,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 17:50:11,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:11,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:11,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:50:11,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:11,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992735592] [2021-01-06 17:50:11,937 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:11,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768618115] [2021-01-06 17:50:11,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:11,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:11,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185508698] [2021-01-06 17:50:11,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:11,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:11,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:11,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:11,941 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 8 states. [2021-01-06 17:50:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:12,153 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2021-01-06 17:50:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:50:12,153 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-01-06 17:50:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:12,158 INFO L225 Difference]: With dead ends: 103 [2021-01-06 17:50:12,158 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 17:50:12,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:12,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 17:50:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2021-01-06 17:50:12,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-06 17:50:12,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-01-06 17:50:12,196 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 25 [2021-01-06 17:50:12,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:12,196 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-01-06 17:50:12,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-01-06 17:50:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:50:12,198 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:12,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:12,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:12,415 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:12,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:12,417 INFO L82 PathProgramCache]: Analyzing trace with hash 115055918, now seen corresponding path program 1 times [2021-01-06 17:50:12,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:12,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399335076] [2021-01-06 17:50:12,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:12,430 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:12,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417734939] [2021-01-06 17:50:12,431 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 17:50:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:12,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:50:12,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:12,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399335076] [2021-01-06 17:50:12,673 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:12,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417734939] [2021-01-06 17:50:12,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:12,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:50:12,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718854957] [2021-01-06 17:50:12,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:50:12,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:12,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:50:12,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:50:12,676 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2021-01-06 17:50:12,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:12,871 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-01-06 17:50:12,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:50:12,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2021-01-06 17:50:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:12,873 INFO L225 Difference]: With dead ends: 101 [2021-01-06 17:50:12,874 INFO L226 Difference]: Without dead ends: 99 [2021-01-06 17:50:12,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-01-06 17:50:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2021-01-06 17:50:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-06 17:50:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2021-01-06 17:50:12,897 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 27 [2021-01-06 17:50:12,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:12,897 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2021-01-06 17:50:12,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:50:12,897 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2021-01-06 17:50:12,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:50:12,898 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:12,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:13,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:13,114 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:13,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1100255215, now seen corresponding path program 1 times [2021-01-06 17:50:13,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:13,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299945687] [2021-01-06 17:50:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:13,128 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:13,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837253256] [2021-01-06 17:50:13,129 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 17:50:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:13,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:50:13,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:13,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299945687] [2021-01-06 17:50:13,310 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:13,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837253256] [2021-01-06 17:50:13,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:13,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:13,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077810713] [2021-01-06 17:50:13,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:13,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:13,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:13,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:13,312 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 8 states. [2021-01-06 17:50:13,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:13,492 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2021-01-06 17:50:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:50:13,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-01-06 17:50:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:13,493 INFO L225 Difference]: With dead ends: 117 [2021-01-06 17:50:13,493 INFO L226 Difference]: Without dead ends: 91 [2021-01-06 17:50:13,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-06 17:50:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2021-01-06 17:50:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-06 17:50:13,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2021-01-06 17:50:13,501 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 29 [2021-01-06 17:50:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:13,502 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2021-01-06 17:50:13,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:13,502 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2021-01-06 17:50:13,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:50:13,503 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:13,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:13,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:13,719 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:13,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:13,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1492250324, now seen corresponding path program 1 times [2021-01-06 17:50:13,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:13,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878564286] [2021-01-06 17:50:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:13,732 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:13,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419108718] [2021-01-06 17:50:13,732 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:13,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:50:13,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:13,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:13,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878564286] [2021-01-06 17:50:13,929 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:13,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419108718] [2021-01-06 17:50:13,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:13,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:13,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905759581] [2021-01-06 17:50:13,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:13,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:13,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:13,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:13,931 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 8 states. [2021-01-06 17:50:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:14,112 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2021-01-06 17:50:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:50:14,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-01-06 17:50:14,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:14,114 INFO L225 Difference]: With dead ends: 91 [2021-01-06 17:50:14,114 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 17:50:14,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:50:14,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 17:50:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-01-06 17:50:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 17:50:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2021-01-06 17:50:14,121 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 32 [2021-01-06 17:50:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:14,122 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2021-01-06 17:50:14,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2021-01-06 17:50:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:50:14,123 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:14,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:14,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:50:14,337 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:14,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1670816768, now seen corresponding path program 3 times [2021-01-06 17:50:14,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:14,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66111241] [2021-01-06 17:50:14,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:14,349 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:14,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576021170] [2021-01-06 17:50:14,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:14,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:50:14,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:14,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:50:14,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-06 17:50:14,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66111241] [2021-01-06 17:50:14,588 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:14,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576021170] [2021-01-06 17:50:14,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:14,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:50:14,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120093478] [2021-01-06 17:50:14,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:50:14,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:14,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:50:14,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:14,591 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 9 states. [2021-01-06 17:50:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:14,867 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2021-01-06 17:50:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:50:14,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2021-01-06 17:50:14,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:14,869 INFO L225 Difference]: With dead ends: 94 [2021-01-06 17:50:14,869 INFO L226 Difference]: Without dead ends: 84 [2021-01-06 17:50:14,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-06 17:50:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2021-01-06 17:50:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:50:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-01-06 17:50:14,881 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 32 [2021-01-06 17:50:14,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:14,881 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-01-06 17:50:14,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:50:14,881 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-01-06 17:50:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:50:14,882 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:14,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:15,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 17:50:15,097 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:15,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:15,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1996519097, now seen corresponding path program 2 times [2021-01-06 17:50:15,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:15,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965084704] [2021-01-06 17:50:15,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:15,116 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:15,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772028024] [2021-01-06 17:50:15,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:15,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:15,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:15,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:50:15,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:15,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965084704] [2021-01-06 17:50:15,341 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:15,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772028024] [2021-01-06 17:50:15,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:15,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:15,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378985876] [2021-01-06 17:50:15,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:15,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:15,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:15,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:15,343 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 8 states. [2021-01-06 17:50:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:15,624 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2021-01-06 17:50:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:50:15,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2021-01-06 17:50:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:15,625 INFO L225 Difference]: With dead ends: 133 [2021-01-06 17:50:15,625 INFO L226 Difference]: Without dead ends: 98 [2021-01-06 17:50:15,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:15,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-06 17:50:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2021-01-06 17:50:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-06 17:50:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-01-06 17:50:15,636 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 34 [2021-01-06 17:50:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:15,636 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-01-06 17:50:15,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-01-06 17:50:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 17:50:15,638 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:15,638 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:15,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:15,852 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:15,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:15,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1415019748, now seen corresponding path program 1 times [2021-01-06 17:50:15,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:15,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086108619] [2021-01-06 17:50:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:15,863 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:15,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437103042] [2021-01-06 17:50:15,864 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:15,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 17:50:15,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 17:50:16,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086108619] [2021-01-06 17:50:16,069 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:16,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437103042] [2021-01-06 17:50:16,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:16,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:50:16,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622527801] [2021-01-06 17:50:16,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:50:16,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:16,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:50:16,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:50:16,071 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 6 states. [2021-01-06 17:50:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:16,173 INFO L93 Difference]: Finished difference Result 146 states and 161 transitions. [2021-01-06 17:50:16,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:50:16,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2021-01-06 17:50:16,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:16,174 INFO L225 Difference]: With dead ends: 146 [2021-01-06 17:50:16,175 INFO L226 Difference]: Without dead ends: 114 [2021-01-06 17:50:16,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:50:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-01-06 17:50:16,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 73. [2021-01-06 17:50:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 17:50:16,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2021-01-06 17:50:16,185 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 40 [2021-01-06 17:50:16,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:16,186 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2021-01-06 17:50:16,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:50:16,186 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2021-01-06 17:50:16,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 17:50:16,187 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:16,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:16,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:16,400 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:16,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:16,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1808046758, now seen corresponding path program 3 times [2021-01-06 17:50:16,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:16,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580453464] [2021-01-06 17:50:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:16,412 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:16,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780907644] [2021-01-06 17:50:16,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:16,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:50:16,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:16,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjunts are in the unsatisfiable core [2021-01-06 17:50:16,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:16,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580453464] [2021-01-06 17:50:16,748 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:16,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780907644] [2021-01-06 17:50:16,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:16,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:50:16,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895245388] [2021-01-06 17:50:16,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:50:16,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:16,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:50:16,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:50:16,750 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 12 states. [2021-01-06 17:50:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:17,346 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-01-06 17:50:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:50:17,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2021-01-06 17:50:17,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:17,347 INFO L225 Difference]: With dead ends: 119 [2021-01-06 17:50:17,348 INFO L226 Difference]: Without dead ends: 86 [2021-01-06 17:50:17,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:50:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-01-06 17:50:17,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2021-01-06 17:50:17,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:50:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-01-06 17:50:17,358 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 40 [2021-01-06 17:50:17,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:17,358 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-01-06 17:50:17,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:50:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-01-06 17:50:17,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 17:50:17,359 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:17,360 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:17,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:50:17,574 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:17,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:17,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1666655538, now seen corresponding path program 4 times [2021-01-06 17:50:17,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:17,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640385006] [2021-01-06 17:50:17,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:17,584 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:17,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234065010] [2021-01-06 17:50:17,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:17,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:50:17,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:17,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 43 conjunts are in the unsatisfiable core [2021-01-06 17:50:17,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:17,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640385006] [2021-01-06 17:50:17,824 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:17,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234065010] [2021-01-06 17:50:17,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:17,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:50:17,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740393172] [2021-01-06 17:50:17,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:50:17,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:17,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:50:17,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:17,826 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2021-01-06 17:50:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:18,208 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2021-01-06 17:50:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:50:18,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2021-01-06 17:50:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:18,210 INFO L225 Difference]: With dead ends: 107 [2021-01-06 17:50:18,210 INFO L226 Difference]: Without dead ends: 105 [2021-01-06 17:50:18,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:50:18,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-01-06 17:50:18,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 81. [2021-01-06 17:50:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:50:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2021-01-06 17:50:18,226 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 41 [2021-01-06 17:50:18,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:18,227 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2021-01-06 17:50:18,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:50:18,227 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2021-01-06 17:50:18,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 17:50:18,229 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:18,229 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:18,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:50:18,443 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:18,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:18,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1928663159, now seen corresponding path program 2 times [2021-01-06 17:50:18,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:18,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213604109] [2021-01-06 17:50:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:18,453 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:18,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124646483] [2021-01-06 17:50:18,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:18,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:18,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:18,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-06 17:50:18,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:18,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213604109] [2021-01-06 17:50:18,888 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:18,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124646483] [2021-01-06 17:50:18,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:18,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:50:18,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365356946] [2021-01-06 17:50:18,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:50:18,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:18,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:50:18,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:50:18,890 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 13 states. [2021-01-06 17:50:19,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:19,541 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2021-01-06 17:50:19,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:50:19,541 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2021-01-06 17:50:19,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:19,542 INFO L225 Difference]: With dead ends: 122 [2021-01-06 17:50:19,542 INFO L226 Difference]: Without dead ends: 96 [2021-01-06 17:50:19,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-01-06 17:50:19,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-06 17:50:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-01-06 17:50:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-01-06 17:50:19,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2021-01-06 17:50:19,553 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 42 [2021-01-06 17:50:19,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:19,554 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2021-01-06 17:50:19,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:50:19,554 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2021-01-06 17:50:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 17:50:19,554 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:19,555 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:19,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:50:19,769 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:19,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:19,770 INFO L82 PathProgramCache]: Analyzing trace with hash 366986673, now seen corresponding path program 3 times [2021-01-06 17:50:19,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:19,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493373212] [2021-01-06 17:50:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:19,779 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:19,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179376497] [2021-01-06 17:50:19,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:19,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:50:19,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:19,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-06 17:50:19,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-01-06 17:50:20,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493373212] [2021-01-06 17:50:20,317 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:20,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179376497] [2021-01-06 17:50:20,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:20,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:50:20,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714043026] [2021-01-06 17:50:20,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:50:20,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:20,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:50:20,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:50:20,319 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 14 states. [2021-01-06 17:50:20,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:20,937 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2021-01-06 17:50:20,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:50:20,938 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2021-01-06 17:50:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:20,939 INFO L225 Difference]: With dead ends: 114 [2021-01-06 17:50:20,939 INFO L226 Difference]: Without dead ends: 110 [2021-01-06 17:50:20,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:50:20,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-01-06 17:50:20,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2021-01-06 17:50:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-01-06 17:50:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2021-01-06 17:50:20,953 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 43 [2021-01-06 17:50:20,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:20,953 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2021-01-06 17:50:20,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:50:20,953 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2021-01-06 17:50:20,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:50:20,954 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:20,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:21,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:21,168 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:21,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:21,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1273273436, now seen corresponding path program 2 times [2021-01-06 17:50:21,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:21,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520392943] [2021-01-06 17:50:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:21,178 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:21,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264670989] [2021-01-06 17:50:21,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:21,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:50:21,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:21,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:50:21,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-06 17:50:21,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520392943] [2021-01-06 17:50:21,423 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:21,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264670989] [2021-01-06 17:50:21,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:21,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:50:21,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755125576] [2021-01-06 17:50:21,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:50:21,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:21,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:50:21,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:21,425 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 11 states. [2021-01-06 17:50:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:21,806 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2021-01-06 17:50:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:50:21,807 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2021-01-06 17:50:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:21,807 INFO L225 Difference]: With dead ends: 94 [2021-01-06 17:50:21,807 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:50:21,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:50:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:50:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:50:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:50:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:50:21,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-01-06 17:50:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:21,809 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:50:21,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:50:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:50:21,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:50:22,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:50:22,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:50:24,500 WARN L197 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2021-01-06 17:50:24,761 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2021-01-06 17:50:24,973 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 18 [2021-01-06 17:50:25,204 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-01-06 17:50:25,456 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-01-06 17:50:25,595 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 12 [2021-01-06 17:50:25,873 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 18 [2021-01-06 17:50:25,877 INFO L192 CegarLoopUtils]: At program point L60(lines 22 61) the Hoare annotation is: true [2021-01-06 17:50:25,878 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:25,878 INFO L189 CegarLoopUtils]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-01-06 17:50:25,878 INFO L189 CegarLoopUtils]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2021-01-06 17:50:25,878 INFO L189 CegarLoopUtils]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-01-06 17:50:25,878 INFO L189 CegarLoopUtils]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2021-01-06 17:50:25,879 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:25,879 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:50:25,879 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:50:25,879 INFO L189 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2021-01-06 17:50:25,879 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:25,879 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:25,879 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:25,879 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:25,879 INFO L185 CegarLoopUtils]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (let ((.cse0 (= ULTIMATE.start_main_~d~0 .cse3)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) (= (mod ULTIMATE.start_main_~d~0 2) 0) .cse0 .cse1 .cse2 (< 0 .cse3) .cse4 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1))))) [2021-01-06 17:50:25,880 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:25,880 INFO L185 CegarLoopUtils]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (let ((.cse0 (= ULTIMATE.start_main_~d~0 .cse3)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) (= (mod ULTIMATE.start_main_~d~0 2) 0) .cse0 .cse1 .cse2 (< 0 .cse3) .cse4 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1))))) [2021-01-06 17:50:25,880 INFO L189 CegarLoopUtils]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:25,881 INFO L185 CegarLoopUtils]: At program point L15-8(line 38) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (let ((.cse0 (= ULTIMATE.start_main_~d~0 .cse3)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) (= (mod ULTIMATE.start_main_~d~0 2) 0) .cse0 .cse1 .cse2 (< 0 .cse3) .cse4 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1))))) [2021-01-06 17:50:25,881 INFO L189 CegarLoopUtils]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:25,881 INFO L185 CegarLoopUtils]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~d~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (< 0 .cse0))) [2021-01-06 17:50:25,881 INFO L189 CegarLoopUtils]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:25,881 INFO L185 CegarLoopUtils]: At program point L15-14(line 48) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~d~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (< 0 .cse0))) [2021-01-06 17:50:25,881 INFO L189 CegarLoopUtils]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:25,882 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:50:25,882 INFO L185 CegarLoopUtils]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1)) [2021-01-06 17:50:25,882 INFO L189 CegarLoopUtils]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:25,882 INFO L192 CegarLoopUtils]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-01-06 17:50:25,882 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:25,882 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:25,882 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:25,883 INFO L189 CegarLoopUtils]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:25,883 INFO L189 CegarLoopUtils]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:25,883 INFO L189 CegarLoopUtils]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:25,883 INFO L189 CegarLoopUtils]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:25,883 INFO L189 CegarLoopUtils]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:25,883 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:50:25,884 INFO L185 CegarLoopUtils]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (let ((.cse0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (and (= ULTIMATE.start_main_~B~0 1) (= (mod ULTIMATE.start_main_~d~0 2) 0) (= ULTIMATE.start_main_~d~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (< 0 .cse0) .cse2 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0))) (and (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~d~0 1)))) [2021-01-06 17:50:25,884 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:25,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:50:25 BoogieIcfgContainer [2021-01-06 17:50:25,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:50:25,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:50:25,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:50:25,928 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:50:25,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:09" (3/4) ... [2021-01-06 17:50:25,932 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:50:25,943 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-01-06 17:50:25,943 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:50:25,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:50:25,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:50:25,990 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/hard2_valuebound20.c-witness.graphml [2021-01-06 17:50:25,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:50:25,992 INFO L168 Benchmark]: Toolchain (without parser) took 17562.89 ms. Allocated memory was 162.5 MB in the beginning and 239.1 MB in the end (delta: 76.5 MB). Free memory was 138.2 MB in the beginning and 124.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 90.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:25,992 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory was 136.8 MB in the beginning and 136.7 MB in the end (delta: 162.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:50:25,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.66 ms. Allocated memory is still 162.5 MB. Free memory was 138.0 MB in the beginning and 128.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:25,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.98 ms. Allocated memory is still 162.5 MB. Free memory was 128.1 MB in the beginning and 126.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:25,993 INFO L168 Benchmark]: Boogie Preprocessor took 32.54 ms. Allocated memory is still 162.5 MB. Free memory was 126.4 MB in the beginning and 125.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:25,994 INFO L168 Benchmark]: RCFGBuilder took 400.96 ms. Allocated memory is still 162.5 MB. Free memory was 125.2 MB in the beginning and 143.3 MB in the end (delta: -18.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:25,994 INFO L168 Benchmark]: TraceAbstraction took 16684.58 ms. Allocated memory was 162.5 MB in the beginning and 239.1 MB in the end (delta: 76.5 MB). Free memory was 142.7 MB in the beginning and 128.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 134.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:25,995 INFO L168 Benchmark]: Witness Printer took 65.70 ms. Allocated memory is still 239.1 MB. Free memory was 128.0 MB in the beginning and 124.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:25,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory was 136.8 MB in the beginning and 136.7 MB in the end (delta: 162.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 324.66 ms. Allocated memory is still 162.5 MB. Free memory was 138.0 MB in the beginning and 128.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.98 ms. Allocated memory is still 162.5 MB. Free memory was 128.1 MB in the beginning and 126.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.54 ms. Allocated memory is still 162.5 MB. Free memory was 126.4 MB in the beginning and 125.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 400.96 ms. Allocated memory is still 162.5 MB. Free memory was 125.2 MB in the beginning and 143.3 MB in the end (delta: -18.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16684.58 ms. Allocated memory was 162.5 MB in the beginning and 239.1 MB in the end (delta: 76.5 MB). Free memory was 142.7 MB in the beginning and 128.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 134.8 MB. Max. memory is 8.0 GB. * Witness Printer took 65.70 ms. Allocated memory is still 239.1 MB. Free memory was 128.0 MB in the beginning and 124.9 MB in the end (delta: 3.1 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((B == 1 && d % 2 == 0) && d == p * B) && 1 == cond) && q == 0) && 0 < p * B) && A == r) && d * -1 / -2 <= r) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((B == 1 && d % 2 == 0) && d == p * B) && 1 == cond) && q == 0) && 0 < p * B) && A == r) && d * -1 / -2 <= r) || ((((B == d && p == 1) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((B == 1 && d == p * B) && 1 == cond) && A == q + r) && 0 < p * B - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((B == 1 && d % 2 == 0) && d == p * B) && 1 == cond) && q == 0) && 0 < p * B) && A == r) && d * -1 / -2 <= r) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((B == 1 && d % 2 == 0) && d == p * B) && 1 == cond) && q == 0) && 0 < p * B) && A == r) && d * -1 / -2 <= r) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((B == 1 && !(0 == cond)) && B == d) && p == 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((B == 1 && d == p * B) && 1 == cond) && A == q + r) && 0 < p * B - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.7s, OverallIterations: 18, TraceHistogramMax: 4, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 407 SDtfs, 679 SDslu, 1072 SDs, 0 SdLazy, 2560 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 519 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 188 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 62 NumberOfFragments, 283 HoareAnnotationTreeSize, 9 FomulaSimplifications, 35170 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 5800 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 496 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 478 ConstructedInterpolants, 0 QuantifiedInterpolants, 189867 SizeOfPredicates, 155 NumberOfNonLiveVariables, 1689 ConjunctsInSsa, 495 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 118/343 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...