/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_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:49:56,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:49:56,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:49:56,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:49:56,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:49:56,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:49:56,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:49:56,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:49:56,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:49:56,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:49:56,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:49:56,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:49:56,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:49:56,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:49:56,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:49:56,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:49:56,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:49:56,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:49:56,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:49:56,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:49:56,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:49:56,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:49:56,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:49:56,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:49:56,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:49:56,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:49:56,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:49:56,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:49:56,549 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 17:49:56,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:49:56,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:49:56,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:49:56,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:49:56,581 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:49:56,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:49:56,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:49:56,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:49:56,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:49:56,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:49:56,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:49:56,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:49:56,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:49:56,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:49:56,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:49:56,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:49:56,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:49:56,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:49:56,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:49:56,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:49:56,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:49:56,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:49:56,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:49:56,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:49:56,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:49:56,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:49:56,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:49:56,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:49:56,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:49:56,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:49:56,963 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:49:56,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c [2021-01-06 17:49:57,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/793619bd8/f41c6b48b49c4872af1da42acb700dcc/FLAG44ba998c5 [2021-01-06 17:49:57,648 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:49:57,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c [2021-01-06 17:49:57,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/793619bd8/f41c6b48b49c4872af1da42acb700dcc/FLAG44ba998c5 [2021-01-06 17:49:58,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/793619bd8/f41c6b48b49c4872af1da42acb700dcc [2021-01-06 17:49:58,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:49:58,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:49:58,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:49:58,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:49:58,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:49:58,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:49:58" (1/1) ... [2021-01-06 17:49:58,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78012b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58, skipping insertion in model container [2021-01-06 17:49:58,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:49:58" (1/1) ... [2021-01-06 17:49:58,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:49:58,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:49:58,276 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_valuebound100.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 17:49:58,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:49:58,307 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:49:58,329 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_valuebound100.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 17:49:58,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:49:58,377 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:49:58,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58 WrapperNode [2021-01-06 17:49:58,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:49:58,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:49:58,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:49:58,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:49:58,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58" (1/1) ... [2021-01-06 17:49:58,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58" (1/1) ... [2021-01-06 17:49:58,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:49:58,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:49:58,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:49:58,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:49:58,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58" (1/1) ... [2021-01-06 17:49:58,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58" (1/1) ... [2021-01-06 17:49:58,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58" (1/1) ... [2021-01-06 17:49:58,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58" (1/1) ... [2021-01-06 17:49:58,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58" (1/1) ... [2021-01-06 17:49:58,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58" (1/1) ... [2021-01-06 17:49:58,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58" (1/1) ... [2021-01-06 17:49:58,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:49:58,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:49:58,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:49:58,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:49:58,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58" (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 [2021-01-06 17:49:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:49:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:49:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:49:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:49:59,012 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:49:59,013 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-01-06 17:49:59,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:49:59 BoogieIcfgContainer [2021-01-06 17:49:59,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:49:59,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:49:59,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:49:59,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:49:59,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:49:58" (1/3) ... [2021-01-06 17:49:59,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1f592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:49:59, skipping insertion in model container [2021-01-06 17:49:59,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:58" (2/3) ... [2021-01-06 17:49:59,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1f592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:49:59, skipping insertion in model container [2021-01-06 17:49:59,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:49:59" (3/3) ... [2021-01-06 17:49:59,046 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound100.c [2021-01-06 17:49:59,076 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:49:59,083 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:49:59,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:49:59,141 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:49:59,141 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:49:59,141 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:49:59,141 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:49:59,141 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:49:59,142 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:49:59,142 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:49:59,142 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:49:59,158 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-01-06 17:49:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:49:59,164 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:59,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:59,165 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 17:49:59,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-01-06 17:49:59,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:59,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903413535] [2021-01-06 17:49:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:59,323 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 17:49:59,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903413535] [2021-01-06 17:49:59,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:59,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:49:59,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786848367] [2021-01-06 17:49:59,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:49:59,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:59,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:49:59,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:49:59,348 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2021-01-06 17:49:59,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:59,370 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2021-01-06 17:49:59,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:49:59,371 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:49:59,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:59,380 INFO L225 Difference]: With dead ends: 75 [2021-01-06 17:49:59,381 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 17:49:59,384 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 17:49:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 17:49:59,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-01-06 17:49:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:49:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-01-06 17:49:59,421 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-01-06 17:49:59,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:59,422 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-01-06 17:49:59,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:49:59,422 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-01-06 17:49:59,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:49:59,422 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:59,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:59,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:49:59,423 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 17:49:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:59,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-01-06 17:49:59,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:59,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355002573] [2021-01-06 17:49:59,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:59,508 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 17:49:59,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355002573] [2021-01-06 17:49:59,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:59,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:49:59,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004472561] [2021-01-06 17:49:59,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:49:59,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:59,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:49:59,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:49:59,513 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2021-01-06 17:49:59,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:59,607 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-01-06 17:49:59,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:49:59,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-06 17:49:59,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:59,612 INFO L225 Difference]: With dead ends: 54 [2021-01-06 17:49:59,612 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:49:59,613 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 17:49:59,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:49:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-01-06 17:49:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 17:49:59,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-01-06 17:49:59,622 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2021-01-06 17:49:59,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:59,622 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-01-06 17:49:59,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:49:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-01-06 17:49:59,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:49:59,623 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:59,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:59,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:49:59,624 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 17:49:59,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:59,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-01-06 17:49:59,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:59,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733349664] [2021-01-06 17:49:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:59,705 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 17:49:59,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733349664] [2021-01-06 17:49:59,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:59,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:49:59,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243829921] [2021-01-06 17:49:59,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:49:59,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:59,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:49:59,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:49:59,708 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2021-01-06 17:49:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:59,790 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-01-06 17:49:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:49:59,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 17:49:59,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:59,792 INFO L225 Difference]: With dead ends: 52 [2021-01-06 17:49:59,792 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:49:59,793 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 17:49:59,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:49:59,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2021-01-06 17:49:59,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 17:49:59,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-01-06 17:49:59,802 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2021-01-06 17:49:59,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:59,802 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-01-06 17:49:59,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:49:59,803 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-01-06 17:49:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:49:59,803 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:59,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:59,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:49:59,804 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 17:49:59,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:59,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-01-06 17:49:59,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:59,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791532367] [2021-01-06 17:49:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:59,824 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:59,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011437365] [2021-01-06 17:49:59,824 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 17:49:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:59,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:49:59,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:00,006 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 17:50:00,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791532367] [2021-01-06 17:50:00,007 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:00,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011437365] [2021-01-06 17:50:00,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:00,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:50:00,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673548880] [2021-01-06 17:50:00,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:50:00,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:00,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:50:00,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:50:00,010 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2021-01-06 17:50:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:00,149 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-01-06 17:50:00,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:50:00,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 17:50:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:00,151 INFO L225 Difference]: With dead ends: 72 [2021-01-06 17:50:00,151 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:50:00,152 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 17:50:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:50:00,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-01-06 17:50:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 17:50:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-01-06 17:50:00,164 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2021-01-06 17:50:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:00,165 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-01-06 17:50:00,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:50:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-01-06 17:50:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:50:00,166 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:00,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:00,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:00,382 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 17:50:00,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:00,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1783857492, now seen corresponding path program 1 times [2021-01-06 17:50:00,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:00,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931502227] [2021-01-06 17:50:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:00,403 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:00,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363287636] [2021-01-06 17:50:00,404 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 17:50:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:00,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:50:00,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:00,567 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 17:50:00,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931502227] [2021-01-06 17:50:00,568 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:00,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363287636] [2021-01-06 17:50:00,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:00,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:50:00,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778385908] [2021-01-06 17:50:00,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:50:00,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:00,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:50:00,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:50:00,583 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 5 states. [2021-01-06 17:50:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:00,671 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-01-06 17:50:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:50:00,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:50:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:00,673 INFO L225 Difference]: With dead ends: 63 [2021-01-06 17:50:00,673 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:50:00,674 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 17:50:00,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:50:00,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-01-06 17:50:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 17:50:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-01-06 17:50:00,683 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2021-01-06 17:50:00,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:00,683 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-01-06 17:50:00,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:50:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-01-06 17:50:00,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:50:00,684 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:00,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:00,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:00,899 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 17:50:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:00,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2021-01-06 17:50:00,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:00,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908712728] [2021-01-06 17:50:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:00,922 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:00,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842038462] [2021-01-06 17:50:00,922 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 17:50:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:00,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:50:00,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:01,123 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 17:50:01,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908712728] [2021-01-06 17:50:01,124 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:01,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842038462] [2021-01-06 17:50:01,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:01,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:50:01,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377736948] [2021-01-06 17:50:01,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:50:01,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:01,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:50:01,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:50:01,133 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2021-01-06 17:50:01,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:01,327 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-01-06 17:50:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:50:01,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 17:50:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:01,331 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:50:01,332 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:50:01,340 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 17:50:01,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:50:01,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2021-01-06 17:50:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-06 17:50:01,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2021-01-06 17:50:01,360 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 18 [2021-01-06 17:50:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:01,360 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2021-01-06 17:50:01,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:50:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2021-01-06 17:50:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:50:01,362 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:01,362 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:01,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:01,576 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 17:50:01,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:01,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2021-01-06 17:50:01,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:01,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804096143] [2021-01-06 17:50:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:01,615 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:01,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630776056] [2021-01-06 17:50:01,615 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 17:50:01,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:01,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:01,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:50:01,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:01,811 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 17:50:01,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804096143] [2021-01-06 17:50:01,811 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:01,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630776056] [2021-01-06 17:50:01,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:01,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:01,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228185892] [2021-01-06 17:50:01,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:01,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:01,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:01,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:01,817 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 8 states. [2021-01-06 17:50:02,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:02,029 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2021-01-06 17:50:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:50:02,030 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-01-06 17:50:02,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:02,034 INFO L225 Difference]: With dead ends: 103 [2021-01-06 17:50:02,034 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 17:50:02,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:02,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 17:50:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2021-01-06 17:50:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-06 17:50:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-01-06 17:50:02,067 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 25 [2021-01-06 17:50:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:02,067 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-01-06 17:50:02,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-01-06 17:50:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:50:02,068 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:02,068 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 17:50:02,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:02,270 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 17:50:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:02,271 INFO L82 PathProgramCache]: Analyzing trace with hash 115055918, now seen corresponding path program 1 times [2021-01-06 17:50:02,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:02,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947003222] [2021-01-06 17:50:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:02,285 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:02,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855827019] [2021-01-06 17:50:02,286 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 17:50:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:02,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:50:02,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:02,537 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 17:50:02,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947003222] [2021-01-06 17:50:02,537 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:02,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855827019] [2021-01-06 17:50:02,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:02,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:50:02,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913674317] [2021-01-06 17:50:02,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:50:02,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:02,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:50:02,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:50:02,541 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2021-01-06 17:50:02,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:02,705 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-01-06 17:50:02,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:50:02,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2021-01-06 17:50:02,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:02,707 INFO L225 Difference]: With dead ends: 101 [2021-01-06 17:50:02,707 INFO L226 Difference]: Without dead ends: 99 [2021-01-06 17:50:02,708 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 17:50:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-01-06 17:50:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2021-01-06 17:50:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-06 17:50:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2021-01-06 17:50:02,734 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 27 [2021-01-06 17:50:02,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:02,735 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2021-01-06 17:50:02,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:50:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2021-01-06 17:50:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:50:02,736 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:02,736 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 17:50:02,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:02,950 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 17:50:02,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:02,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1100255215, now seen corresponding path program 1 times [2021-01-06 17:50:02,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:02,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142596900] [2021-01-06 17:50:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:02,963 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:02,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235540227] [2021-01-06 17:50:02,964 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 17:50:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:03,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:50:03,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:03,150 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 17:50:03,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142596900] [2021-01-06 17:50:03,151 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:03,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235540227] [2021-01-06 17:50:03,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:03,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:03,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776200133] [2021-01-06 17:50:03,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:03,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:03,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:03,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:03,153 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 8 states. [2021-01-06 17:50:03,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:03,312 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2021-01-06 17:50:03,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:50:03,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-01-06 17:50:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:03,313 INFO L225 Difference]: With dead ends: 117 [2021-01-06 17:50:03,314 INFO L226 Difference]: Without dead ends: 91 [2021-01-06 17:50:03,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:03,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-06 17:50:03,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2021-01-06 17:50:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-06 17:50:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2021-01-06 17:50:03,322 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 29 [2021-01-06 17:50:03,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:03,323 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2021-01-06 17:50:03,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:03,323 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2021-01-06 17:50:03,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:50:03,324 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:03,324 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 17:50:03,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:03,539 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 17:50:03,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:03,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1492250324, now seen corresponding path program 1 times [2021-01-06 17:50:03,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:03,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533659200] [2021-01-06 17:50:03,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:03,553 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:03,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335898837] [2021-01-06 17:50:03,556 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 17:50:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:03,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:50:03,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:03,766 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 17:50:03,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533659200] [2021-01-06 17:50:03,767 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:03,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335898837] [2021-01-06 17:50:03,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:03,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:03,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789336286] [2021-01-06 17:50:03,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:03,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:03,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:03,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:03,769 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 8 states. [2021-01-06 17:50:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:03,939 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2021-01-06 17:50:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:50:03,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-01-06 17:50:03,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:03,941 INFO L225 Difference]: With dead ends: 91 [2021-01-06 17:50:03,941 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 17:50:03,942 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 17:50:03,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 17:50:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-01-06 17:50:03,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 17:50:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2021-01-06 17:50:03,948 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 32 [2021-01-06 17:50:03,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:03,949 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2021-01-06 17:50:03,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:03,949 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2021-01-06 17:50:03,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:50:03,950 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:03,950 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:04,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:50:04,160 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 17:50:04,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:04,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1670816768, now seen corresponding path program 3 times [2021-01-06 17:50:04,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:04,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160429017] [2021-01-06 17:50:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:04,173 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:04,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558890756] [2021-01-06 17:50:04,173 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 17:50:04,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:50:04,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:04,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:50:04,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:04,417 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 17:50:04,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160429017] [2021-01-06 17:50:04,418 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:04,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558890756] [2021-01-06 17:50:04,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:04,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:50:04,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180770726] [2021-01-06 17:50:04,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:50:04,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:04,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:50:04,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:04,420 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 9 states. [2021-01-06 17:50:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:04,651 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2021-01-06 17:50:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:50:04,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2021-01-06 17:50:04,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:04,652 INFO L225 Difference]: With dead ends: 94 [2021-01-06 17:50:04,652 INFO L226 Difference]: Without dead ends: 84 [2021-01-06 17:50:04,653 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 17:50:04,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-06 17:50:04,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2021-01-06 17:50:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:50:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-01-06 17:50:04,663 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 32 [2021-01-06 17:50:04,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:04,663 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-01-06 17:50:04,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:50:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-01-06 17:50:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:50:04,664 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:04,664 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 17:50:04,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 17:50:04,879 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 17:50:04,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:04,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1996519097, now seen corresponding path program 2 times [2021-01-06 17:50:04,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:04,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360395531] [2021-01-06 17:50:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:04,891 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:04,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283640330] [2021-01-06 17:50:04,892 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 17:50:04,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:04,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:04,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:50:04,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:05,129 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 17:50:05,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360395531] [2021-01-06 17:50:05,129 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:05,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283640330] [2021-01-06 17:50:05,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:05,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:05,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211395570] [2021-01-06 17:50:05,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:05,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:05,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:05,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:05,132 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 8 states. [2021-01-06 17:50:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:05,432 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2021-01-06 17:50:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:50:05,433 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2021-01-06 17:50:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:05,437 INFO L225 Difference]: With dead ends: 133 [2021-01-06 17:50:05,437 INFO L226 Difference]: Without dead ends: 98 [2021-01-06 17:50:05,438 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 17:50:05,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-06 17:50:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2021-01-06 17:50:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-06 17:50:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-01-06 17:50:05,452 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 34 [2021-01-06 17:50:05,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:05,453 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-01-06 17:50:05,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-01-06 17:50:05,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 17:50:05,463 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:05,463 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 17:50:05,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:05,678 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 17:50:05,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:05,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1415019748, now seen corresponding path program 1 times [2021-01-06 17:50:05,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:05,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421659163] [2021-01-06 17:50:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:05,689 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:05,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086494276] [2021-01-06 17:50:05,690 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 17:50:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:05,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 17:50:05,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:05,899 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 17:50:05,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421659163] [2021-01-06 17:50:05,899 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:05,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086494276] [2021-01-06 17:50:05,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:05,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:50:05,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629772700] [2021-01-06 17:50:05,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:50:05,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:05,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:50:05,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:50:05,901 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 6 states. [2021-01-06 17:50:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:06,019 INFO L93 Difference]: Finished difference Result 146 states and 161 transitions. [2021-01-06 17:50:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:50:06,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2021-01-06 17:50:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:06,021 INFO L225 Difference]: With dead ends: 146 [2021-01-06 17:50:06,021 INFO L226 Difference]: Without dead ends: 114 [2021-01-06 17:50:06,023 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 17:50:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-01-06 17:50:06,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 73. [2021-01-06 17:50:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 17:50:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2021-01-06 17:50:06,036 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 40 [2021-01-06 17:50:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:06,037 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2021-01-06 17:50:06,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:50:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2021-01-06 17:50:06,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 17:50:06,037 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:06,038 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 17:50:06,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:06,253 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 17:50:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:06,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1808046758, now seen corresponding path program 3 times [2021-01-06 17:50:06,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:06,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391246420] [2021-01-06 17:50:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:06,264 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:06,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272229191] [2021-01-06 17:50:06,264 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 17:50:06,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:50:06,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:06,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjunts are in the unsatisfiable core [2021-01-06 17:50:06,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:06,668 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 17:50:06,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391246420] [2021-01-06 17:50:06,669 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:06,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272229191] [2021-01-06 17:50:06,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:06,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:50:06,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496480048] [2021-01-06 17:50:06,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:50:06,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:06,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:50:06,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:50:06,671 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 12 states. [2021-01-06 17:50:07,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:07,293 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-01-06 17:50:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:50:07,294 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2021-01-06 17:50:07,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:07,295 INFO L225 Difference]: With dead ends: 119 [2021-01-06 17:50:07,295 INFO L226 Difference]: Without dead ends: 86 [2021-01-06 17:50:07,295 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 17:50:07,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-01-06 17:50:07,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2021-01-06 17:50:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:50:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-01-06 17:50:07,304 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 40 [2021-01-06 17:50:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:07,305 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-01-06 17:50:07,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:50:07,305 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-01-06 17:50:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 17:50:07,306 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:07,306 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 17:50:07,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:50:07,520 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 17:50:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:07,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1666655538, now seen corresponding path program 4 times [2021-01-06 17:50:07,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:07,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250369277] [2021-01-06 17:50:07,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:07,532 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:07,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590822229] [2021-01-06 17:50:07,532 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 17:50:07,578 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:50:07,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:07,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 43 conjunts are in the unsatisfiable core [2021-01-06 17:50:07,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:07,774 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 17:50:07,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250369277] [2021-01-06 17:50:07,774 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:07,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590822229] [2021-01-06 17:50:07,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:07,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:50:07,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102801945] [2021-01-06 17:50:07,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:50:07,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:07,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:50:07,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:07,776 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2021-01-06 17:50:08,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:08,132 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2021-01-06 17:50:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:50:08,133 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2021-01-06 17:50:08,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:08,134 INFO L225 Difference]: With dead ends: 107 [2021-01-06 17:50:08,134 INFO L226 Difference]: Without dead ends: 105 [2021-01-06 17:50:08,134 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 17:50:08,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-01-06 17:50:08,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 81. [2021-01-06 17:50:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:50:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2021-01-06 17:50:08,144 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 41 [2021-01-06 17:50:08,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:08,145 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2021-01-06 17:50:08,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:50:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2021-01-06 17:50:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 17:50:08,145 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:08,145 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 17:50:08,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:50:08,359 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 17:50:08,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:08,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1928663159, now seen corresponding path program 2 times [2021-01-06 17:50:08,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:08,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520592828] [2021-01-06 17:50:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:08,370 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:08,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632990443] [2021-01-06 17:50:08,370 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 17:50:08,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:08,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:08,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-06 17:50:08,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:08,783 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 17:50:08,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520592828] [2021-01-06 17:50:08,783 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:08,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632990443] [2021-01-06 17:50:08,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:08,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:50:08,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556923063] [2021-01-06 17:50:08,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:50:08,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:08,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:50:08,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:50:08,785 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 13 states. [2021-01-06 17:50:09,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:09,407 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2021-01-06 17:50:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:50:09,409 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2021-01-06 17:50:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:09,410 INFO L225 Difference]: With dead ends: 122 [2021-01-06 17:50:09,410 INFO L226 Difference]: Without dead ends: 96 [2021-01-06 17:50:09,411 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 17:50:09,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-06 17:50:09,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-01-06 17:50:09,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-01-06 17:50:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2021-01-06 17:50:09,421 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 42 [2021-01-06 17:50:09,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:09,422 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2021-01-06 17:50:09,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:50:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2021-01-06 17:50:09,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 17:50:09,422 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:09,423 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 17:50:09,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:50:09,636 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 17:50:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:09,636 INFO L82 PathProgramCache]: Analyzing trace with hash 366986673, now seen corresponding path program 3 times [2021-01-06 17:50:09,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:09,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594262129] [2021-01-06 17:50:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:09,653 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:09,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162499886] [2021-01-06 17:50:09,654 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 17:50:09,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:50:09,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:09,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-06 17:50:09,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:10,197 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 17:50:10,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594262129] [2021-01-06 17:50:10,197 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:10,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162499886] [2021-01-06 17:50:10,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:10,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:50:10,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372681168] [2021-01-06 17:50:10,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:50:10,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:10,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:50:10,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:50:10,200 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 14 states. [2021-01-06 17:50:10,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:10,802 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2021-01-06 17:50:10,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:50:10,803 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2021-01-06 17:50:10,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:10,804 INFO L225 Difference]: With dead ends: 114 [2021-01-06 17:50:10,804 INFO L226 Difference]: Without dead ends: 110 [2021-01-06 17:50:10,806 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 17:50:10,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-01-06 17:50:10,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2021-01-06 17:50:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-01-06 17:50:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2021-01-06 17:50:10,826 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 43 [2021-01-06 17:50:10,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:10,826 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2021-01-06 17:50:10,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:50:10,826 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2021-01-06 17:50:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:50:10,827 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:10,827 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 17:50:11,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:11,042 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 17:50:11,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:11,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1273273436, now seen corresponding path program 2 times [2021-01-06 17:50:11,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:11,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311499918] [2021-01-06 17:50:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:11,051 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:11,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434138478] [2021-01-06 17:50:11,051 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 17:50:11,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:50:11,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:11,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:50:11,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:11,260 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 17:50:11,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311499918] [2021-01-06 17:50:11,261 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:11,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434138478] [2021-01-06 17:50:11,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:11,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:50:11,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518935491] [2021-01-06 17:50:11,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:50:11,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:11,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:50:11,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:11,263 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 11 states. [2021-01-06 17:50:11,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:11,636 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2021-01-06 17:50:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:50:11,656 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2021-01-06 17:50:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:11,657 INFO L225 Difference]: With dead ends: 94 [2021-01-06 17:50:11,657 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:50:11,658 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 17:50:11,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:50:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:50:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:50:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:50:11,659 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-01-06 17:50:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:11,659 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:50:11,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:50:11,660 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:50:11,660 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:50:11,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:50:11,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:50:14,402 WARN L197 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2021-01-06 17:50:14,628 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2021-01-06 17:50:14,863 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 18 [2021-01-06 17:50:15,110 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-01-06 17:50:15,344 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-01-06 17:50:15,512 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 12 [2021-01-06 17:50:15,796 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 18 [2021-01-06 17:50:15,800 INFO L192 CegarLoopUtils]: At program point L60(lines 22 61) the Hoare annotation is: true [2021-01-06 17:50:15,800 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:15,801 INFO L189 CegarLoopUtils]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-01-06 17:50:15,801 INFO L189 CegarLoopUtils]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2021-01-06 17:50:15,801 INFO L189 CegarLoopUtils]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-01-06 17:50:15,801 INFO L189 CegarLoopUtils]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2021-01-06 17:50:15,801 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:15,801 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:50:15,801 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:50:15,801 INFO L189 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2021-01-06 17:50:15,802 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:15,802 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:15,802 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:15,802 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:15,802 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 17:50:15,802 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:15,802 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 17:50:15,802 INFO L189 CegarLoopUtils]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:15,803 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 17:50:15,803 INFO L189 CegarLoopUtils]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:15,803 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 17:50:15,803 INFO L189 CegarLoopUtils]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:15,803 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 17:50:15,803 INFO L189 CegarLoopUtils]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:15,803 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:50:15,803 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 17:50:15,803 INFO L189 CegarLoopUtils]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:15,803 INFO L192 CegarLoopUtils]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-01-06 17:50:15,803 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:15,803 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:15,803 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:15,804 INFO L189 CegarLoopUtils]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:15,804 INFO L189 CegarLoopUtils]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:15,804 INFO L189 CegarLoopUtils]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:15,804 INFO L189 CegarLoopUtils]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:15,804 INFO L189 CegarLoopUtils]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:15,804 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:50:15,804 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 17:50:15,804 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:15,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:50:15 BoogieIcfgContainer [2021-01-06 17:50:15,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:50:15,828 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:50:15,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:50:15,828 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:50:15,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:49:59" (3/4) ... [2021-01-06 17:50:15,832 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:50:15,845 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-01-06 17:50:15,845 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:50:15,846 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:50:15,846 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:50:15,900 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/hard2_valuebound100.c-witness.graphml [2021-01-06 17:50:15,900 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:50:15,901 INFO L168 Benchmark]: Toolchain (without parser) took 17866.22 ms. Allocated memory was 159.4 MB in the beginning and 317.7 MB in the end (delta: 158.3 MB). Free memory was 135.7 MB in the beginning and 261.9 MB in the end (delta: -126.2 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:15,902 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 159.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:50:15,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.85 ms. Allocated memory is still 159.4 MB. Free memory was 135.4 MB in the beginning and 125.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:15,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.05 ms. Allocated memory is still 159.4 MB. Free memory was 125.5 MB in the beginning and 123.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:15,903 INFO L168 Benchmark]: Boogie Preprocessor took 58.56 ms. Allocated memory is still 159.4 MB. Free memory was 123.8 MB in the beginning and 122.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:15,904 INFO L168 Benchmark]: RCFGBuilder took 524.78 ms. Allocated memory is still 159.4 MB. Free memory was 122.6 MB in the beginning and 142.6 MB in the end (delta: -20.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:15,904 INFO L168 Benchmark]: TraceAbstraction took 16798.06 ms. Allocated memory was 159.4 MB in the beginning and 317.7 MB in the end (delta: 158.3 MB). Free memory was 142.1 MB in the beginning and 265.0 MB in the end (delta: -122.9 MB). Peak memory consumption was 183.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:15,905 INFO L168 Benchmark]: Witness Printer took 72.46 ms. Allocated memory is still 317.7 MB. Free memory was 265.0 MB in the beginning and 261.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:15,908 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 159.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 336.85 ms. Allocated memory is still 159.4 MB. Free memory was 135.4 MB in the beginning and 125.5 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 60.05 ms. Allocated memory is still 159.4 MB. Free memory was 125.5 MB in the beginning and 123.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.56 ms. Allocated memory is still 159.4 MB. Free memory was 123.8 MB in the beginning and 122.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 524.78 ms. Allocated memory is still 159.4 MB. Free memory was 122.6 MB in the beginning and 142.6 MB in the end (delta: -20.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16798.06 ms. Allocated memory was 159.4 MB in the beginning and 317.7 MB in the end (delta: 158.3 MB). Free memory was 142.1 MB in the beginning and 265.0 MB in the end (delta: -122.9 MB). Peak memory consumption was 183.2 MB. Max. memory is 8.0 GB. * Witness Printer took 72.46 ms. Allocated memory is still 317.7 MB. Free memory was 265.0 MB in the beginning and 261.9 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: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.9s, 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, 2.9s 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, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 5800 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s 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...