/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/dijkstra-u_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:30:56,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:30:56,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:30:56,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:30:56,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:30:56,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:30:56,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:30:56,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:30:56,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:30:56,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:30:56,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:30:56,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:30:56,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:30:56,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:30:56,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:30:56,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:30:56,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:30:56,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:30:56,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:30:56,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:30:56,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:30:56,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:30:56,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:30:56,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:30:56,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:30:56,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:30:56,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:30:56,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:30:56,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:30:56,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:30:56,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:30:56,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:30:56,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:30:56,442 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:30:56,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:30:56,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:30:56,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:30:56,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:30:56,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:30:56,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:30:56,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:30:56,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:30:56,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:30:56,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:30:56,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:30:56,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:30:56,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:30:56,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:30:56,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:30:56,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:30:56,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:30:56,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:30:56,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:30:56,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:30:56,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:30:56,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:30:56,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:30:56,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:30:56,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:30:56,881 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:30:56,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound5.c [2020-12-23 07:30:56,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0fc9ca4a2/5f23ac8d2d514287b48f1d9c9cd90f9e/FLAGdb899083d [2020-12-23 07:30:57,658 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:30:57,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound5.c [2020-12-23 07:30:57,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0fc9ca4a2/5f23ac8d2d514287b48f1d9c9cd90f9e/FLAGdb899083d [2020-12-23 07:30:58,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0fc9ca4a2/5f23ac8d2d514287b48f1d9c9cd90f9e [2020-12-23 07:30:58,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:30:58,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:30:58,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:30:58,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:30:58,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:30:58,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:30:58" (1/1) ... [2020-12-23 07:30:58,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a5d258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58, skipping insertion in model container [2020-12-23 07:30:58,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:30:58" (1/1) ... [2020-12-23 07:30:58,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:30:58,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:30:58,324 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound5.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~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[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:30:58,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:30:58,397 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:30:58,412 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/dijkstra-u_valuebound5.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~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[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:30:58,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:30:58,448 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:30:58,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58 WrapperNode [2020-12-23 07:30:58,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:30:58,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:30:58,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:30:58,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:30:58,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58" (1/1) ... [2020-12-23 07:30:58,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58" (1/1) ... [2020-12-23 07:30:58,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:30:58,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:30:58,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:30:58,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:30:58,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58" (1/1) ... [2020-12-23 07:30:58,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58" (1/1) ... [2020-12-23 07:30:58,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58" (1/1) ... [2020-12-23 07:30:58,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58" (1/1) ... [2020-12-23 07:30:58,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58" (1/1) ... [2020-12-23 07:30:58,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58" (1/1) ... [2020-12-23 07:30:58,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58" (1/1) ... [2020-12-23 07:30:58,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:30:58,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:30:58,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:30:58,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:30:58,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:30:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:30:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:30:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:30:58,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:31:01,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:31:01,627 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-23 07:31:01,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:31:01 BoogieIcfgContainer [2020-12-23 07:31:01,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:31:01,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:31:01,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:31:01,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:31:01,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:30:58" (1/3) ... [2020-12-23 07:31:01,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c26dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:31:01, skipping insertion in model container [2020-12-23 07:31:01,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:30:58" (2/3) ... [2020-12-23 07:31:01,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c26dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:31:01, skipping insertion in model container [2020-12-23 07:31:01,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:31:01" (3/3) ... [2020-12-23 07:31:01,638 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound5.c [2020-12-23 07:31:01,645 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:31:01,650 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-23 07:31:01,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-23 07:31:01,699 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:31:01,699 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:31:01,699 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:31:01,699 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:31:01,700 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:31:01,700 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:31:01,700 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:31:01,700 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:31:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-23 07:31:01,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:31:01,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:01,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:01,727 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:01,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:01,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2020-12-23 07:31:01,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:01,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701353122] [2020-12-23 07:31:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:31:01,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701353122] [2020-12-23 07:31:01,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:31:01,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:31:01,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139831177] [2020-12-23 07:31:01,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:31:01,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:01,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:31:01,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:31:01,950 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-23 07:31:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:01,975 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2020-12-23 07:31:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:31:01,977 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 07:31:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:01,988 INFO L225 Difference]: With dead ends: 97 [2020-12-23 07:31:01,989 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 07:31:01,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:31:02,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 07:31:02,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-23 07:31:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 07:31:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-23 07:31:02,038 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2020-12-23 07:31:02,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:02,039 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-23 07:31:02,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:31:02,039 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-23 07:31:02,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:31:02,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:02,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:02,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:31:02,041 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:02,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:02,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2020-12-23 07:31:02,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:02,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769422544] [2020-12-23 07:31:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:31:02,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769422544] [2020-12-23 07:31:02,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:31:02,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:31:02,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259039240] [2020-12-23 07:31:02,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:31:02,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:02,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:31:02,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:31:02,489 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 5 states. [2020-12-23 07:31:09,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:09,505 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2020-12-23 07:31:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:31:09,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 07:31:09,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:09,509 INFO L225 Difference]: With dead ends: 110 [2020-12-23 07:31:09,509 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 07:31:09,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:31:09,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 07:31:09,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2020-12-23 07:31:09,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:31:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-23 07:31:09,523 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2020-12-23 07:31:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:09,524 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-23 07:31:09,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:31:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-23 07:31:09,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:31:09,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:09,525 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:09,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:31:09,526 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:09,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:09,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2020-12-23 07:31:09,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:09,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91330217] [2020-12-23 07:31:09,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:31:09,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91330217] [2020-12-23 07:31:09,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740400625] [2020-12-23 07:31:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:09,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 07:31:09,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:10,120 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:31:10,140 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:31:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:31:10,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:31:10,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-23 07:31:10,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046220789] [2020-12-23 07:31:10,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:31:10,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:10,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:31:10,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:31:10,194 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 9 states. [2020-12-23 07:31:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:43,319 INFO L93 Difference]: Finished difference Result 168 states and 189 transitions. [2020-12-23 07:31:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-23 07:31:43,320 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-23 07:31:43,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:43,322 INFO L225 Difference]: With dead ends: 168 [2020-12-23 07:31:43,322 INFO L226 Difference]: Without dead ends: 130 [2020-12-23 07:31:43,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:31:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-23 07:31:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-12-23 07:31:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-23 07:31:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2020-12-23 07:31:43,343 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 13 [2020-12-23 07:31:43,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:43,343 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2020-12-23 07:31:43,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:31:43,344 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2020-12-23 07:31:43,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:31:43,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:43,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:43,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 07:31:43,556 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:43,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:43,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2020-12-23 07:31:43,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:43,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402862158] [2020-12-23 07:31:43,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:43,573 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:43,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986824805] [2020-12-23 07:31:43,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:43,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:31:43,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:31:43,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402862158] [2020-12-23 07:31:43,769 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:43,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986824805] [2020-12-23 07:31:43,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:31:43,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:31:43,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771959269] [2020-12-23 07:31:43,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:31:43,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:43,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:31:43,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:31:43,773 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand 6 states. [2020-12-23 07:31:55,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:55,092 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2020-12-23 07:31:55,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:31:55,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:31:55,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:55,095 INFO L225 Difference]: With dead ends: 108 [2020-12-23 07:31:55,095 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 07:31:55,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:31:55,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 07:31:55,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-23 07:31:55,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-23 07:31:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-12-23 07:31:55,111 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 15 [2020-12-23 07:31:55,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:55,111 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-12-23 07:31:55,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:31:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-12-23 07:31:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:31:55,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:55,112 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:55,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:55,327 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:55,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:55,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2020-12-23 07:31:55,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:55,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675818481] [2020-12-23 07:31:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:55,344 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:55,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428722941] [2020-12-23 07:31:55,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:55,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:31:55,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 07:31:55,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675818481] [2020-12-23 07:31:55,592 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:55,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428722941] [2020-12-23 07:31:55,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:31:55,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:31:55,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256823736] [2020-12-23 07:31:55,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:31:55,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:55,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:31:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:31:55,595 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 6 states. [2020-12-23 07:32:02,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:02,186 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2020-12-23 07:32:02,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:32:02,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 07:32:02,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:02,189 INFO L225 Difference]: With dead ends: 110 [2020-12-23 07:32:02,189 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 07:32:02,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:32:02,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 07:32:02,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2020-12-23 07:32:02,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:32:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2020-12-23 07:32:02,215 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 17 [2020-12-23 07:32:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:02,215 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2020-12-23 07:32:02,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:32:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2020-12-23 07:32:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:32:02,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:02,217 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:02,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:02,421 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:02,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:02,422 INFO L82 PathProgramCache]: Analyzing trace with hash -957581047, now seen corresponding path program 1 times [2020-12-23 07:32:02,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:02,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151549057] [2020-12-23 07:32:02,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:02,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:02,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485504843] [2020-12-23 07:32:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:02,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:32:02,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:02,889 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:32:02,899 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:32:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:02,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151549057] [2020-12-23 07:32:02,941 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:02,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485504843] [2020-12-23 07:32:02,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:32:02,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:32:02,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442900379] [2020-12-23 07:32:02,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:32:02,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:02,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:32:02,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:32:02,944 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand 8 states. [2020-12-23 07:32:26,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:26,744 INFO L93 Difference]: Finished difference Result 164 states and 177 transitions. [2020-12-23 07:32:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:32:26,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-12-23 07:32:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:26,746 INFO L225 Difference]: With dead ends: 164 [2020-12-23 07:32:26,746 INFO L226 Difference]: Without dead ends: 113 [2020-12-23 07:32:26,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:32:26,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-23 07:32:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 94. [2020-12-23 07:32:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:32:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2020-12-23 07:32:26,770 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 27 [2020-12-23 07:32:26,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:26,770 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2020-12-23 07:32:26,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:32:26,770 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2020-12-23 07:32:26,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:32:26,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:26,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:26,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:26,976 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:26,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:26,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1112228340, now seen corresponding path program 1 times [2020-12-23 07:32:26,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:26,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074788656] [2020-12-23 07:32:26,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:27,008 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:27,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774118220] [2020-12-23 07:32:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:27,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:32:27,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:27,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074788656] [2020-12-23 07:32:27,699 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:27,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774118220] [2020-12-23 07:32:27,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:32:27,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:32:27,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942569079] [2020-12-23 07:32:27,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:32:27,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:27,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:32:27,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:32:27,702 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand 10 states. [2020-12-23 07:32:45,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:45,023 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2020-12-23 07:32:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:32:45,025 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-12-23 07:32:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:45,026 INFO L225 Difference]: With dead ends: 113 [2020-12-23 07:32:45,026 INFO L226 Difference]: Without dead ends: 107 [2020-12-23 07:32:45,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:32:45,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-23 07:32:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 98. [2020-12-23 07:32:45,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 07:32:45,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-12-23 07:32:45,040 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 29 [2020-12-23 07:32:45,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:45,040 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-12-23 07:32:45,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:32:45,041 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-12-23 07:32:45,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:32:45,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:45,042 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:45,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:32:45,246 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:45,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1667347652, now seen corresponding path program 2 times [2020-12-23 07:32:45,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:45,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474734945] [2020-12-23 07:32:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:45,265 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:45,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670911753] [2020-12-23 07:32:45,265 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:45,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:32:45,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:32:45,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:32:45,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:45,813 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:32:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:45,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474734945] [2020-12-23 07:32:45,855 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:45,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670911753] [2020-12-23 07:32:45,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:32:45,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:32:45,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150932973] [2020-12-23 07:32:45,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:32:45,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:45,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:32:45,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:32:45,857 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 11 states. [2020-12-23 07:32:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:58,808 INFO L93 Difference]: Finished difference Result 167 states and 180 transitions. [2020-12-23 07:32:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:32:58,809 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-12-23 07:32:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:58,810 INFO L225 Difference]: With dead ends: 167 [2020-12-23 07:32:58,810 INFO L226 Difference]: Without dead ends: 110 [2020-12-23 07:32:58,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:32:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-23 07:32:58,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 97. [2020-12-23 07:32:58,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-23 07:32:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2020-12-23 07:32:58,822 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 29 [2020-12-23 07:32:58,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:58,823 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2020-12-23 07:32:58,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:32:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2020-12-23 07:32:58,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:32:58,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:58,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:59,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:59,029 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:59,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:59,030 INFO L82 PathProgramCache]: Analyzing trace with hash 595578799, now seen corresponding path program 1 times [2020-12-23 07:32:59,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:59,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256898248] [2020-12-23 07:32:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:59,041 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:59,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827815324] [2020-12-23 07:32:59,042 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 [2020-12-23 07:32:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:59,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:32:59,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:59,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256898248] [2020-12-23 07:32:59,831 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:59,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827815324] [2020-12-23 07:32:59,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:32:59,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:32:59,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915951832] [2020-12-23 07:32:59,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:32:59,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:59,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:32:59,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:32:59,833 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand 10 states. [2020-12-23 07:33:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:33:09,283 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2020-12-23 07:33:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:33:09,284 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 07:33:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:33:09,285 INFO L225 Difference]: With dead ends: 109 [2020-12-23 07:33:09,286 INFO L226 Difference]: Without dead ends: 90 [2020-12-23 07:33:09,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:33:09,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-23 07:33:09,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-12-23 07:33:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 07:33:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-12-23 07:33:09,296 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 31 [2020-12-23 07:33:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:33:09,296 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-12-23 07:33:09,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:33:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-12-23 07:33:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:33:09,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:33:09,298 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:33:09,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:33:09,506 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:33:09,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:33:09,507 INFO L82 PathProgramCache]: Analyzing trace with hash 298448647, now seen corresponding path program 2 times [2020-12-23 07:33:09,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:33:09,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088508332] [2020-12-23 07:33:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:33:09,520 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:33:09,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196164635] [2020-12-23 07:33:09,520 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 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 [2020-12-23 07:33:11,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:33:11,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:33:11,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 07:33:11,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:33:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:33:11,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088508332] [2020-12-23 07:33:11,914 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:33:11,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196164635] [2020-12-23 07:33:11,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:33:11,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:33:11,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237157211] [2020-12-23 07:33:11,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:33:11,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:33:11,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:33:11,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:33:11,917 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 12 states. [2020-12-23 07:33:22,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:33:22,777 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2020-12-23 07:33:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:33:22,779 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-12-23 07:33:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:33:22,780 INFO L225 Difference]: With dead ends: 103 [2020-12-23 07:33:22,780 INFO L226 Difference]: Without dead ends: 101 [2020-12-23 07:33:22,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:33:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-23 07:33:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2020-12-23 07:33:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-23 07:33:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-12-23 07:33:22,789 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 31 [2020-12-23 07:33:22,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:33:22,790 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-12-23 07:33:22,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:33:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-12-23 07:33:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:33:22,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:33:22,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:33:22,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:33:22,997 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:33:22,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:33:22,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1120732658, now seen corresponding path program 1 times [2020-12-23 07:33:22,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:33:22,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750179933] [2020-12-23 07:33:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:33:23,010 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:33:23,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195752235] [2020-12-23 07:33:23,011 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 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