/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/hard-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:52:25,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:52:25,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:52:25,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:52:25,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:52:25,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:52:25,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:52:25,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:52:25,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:52:25,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:52:25,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:52:25,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:52:25,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:52:25,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:52:25,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:52:25,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:52:25,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:52:25,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:52:25,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:52:25,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:52:25,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:52:25,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:52:25,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:52:25,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:52:25,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:52:25,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:52:25,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:52:25,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:52:25,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:52:25,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:52:25,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:52:25,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:52:25,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:52:25,509 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:52:25,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:52:25,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:52:25,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:52:25,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:52:25,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:52:25,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:52:25,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:52:25,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:52:25,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:52:25,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:52:25,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:52:25,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:52:25,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:52:25,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:52:25,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:52:25,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:52:25,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:52:25,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:52:25,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:52:25,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:52:25,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:52:25,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:52:25,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:52:25,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:52:25,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:52:25,932 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:52:25,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.c [2020-12-23 07:52:26,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8e4e4b4c1/5813e0fba3874ca0b9cbc6cd18aeb8b3/FLAGd3b986e78 [2020-12-23 07:52:26,736 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:52:26,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.c [2020-12-23 07:52:26,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8e4e4b4c1/5813e0fba3874ca0b9cbc6cd18aeb8b3/FLAGd3b986e78 [2020-12-23 07:52:27,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8e4e4b4c1/5813e0fba3874ca0b9cbc6cd18aeb8b3 [2020-12-23 07:52:27,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:52:27,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:52:27,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:52:27,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:52:27,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:52:27,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:52:27" (1/1) ... [2020-12-23 07:52:27,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c82e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27, skipping insertion in model container [2020-12-23 07:52:27,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:52:27" (1/1) ... [2020-12-23 07:52:27,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:52:27,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:52:27,309 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/hard-ll_valuebound100.c[538,551] 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,] [2020-12-23 07:52:27,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:52:27,342 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:52:27,358 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/hard-ll_valuebound100.c[538,551] 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,] [2020-12-23 07:52:27,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:52:27,385 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:52:27,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27 WrapperNode [2020-12-23 07:52:27,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:52:27,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:52:27,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:52:27,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:52:27,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27" (1/1) ... [2020-12-23 07:52:27,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27" (1/1) ... [2020-12-23 07:52:27,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:52:27,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:52:27,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:52:27,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:52:27,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27" (1/1) ... [2020-12-23 07:52:27,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27" (1/1) ... [2020-12-23 07:52:27,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27" (1/1) ... [2020-12-23 07:52:27,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27" (1/1) ... [2020-12-23 07:52:27,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27" (1/1) ... [2020-12-23 07:52:27,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27" (1/1) ... [2020-12-23 07:52:27,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27" (1/1) ... [2020-12-23 07:52:27,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:52:27,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:52:27,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:52:27,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:52:27,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:52:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:52:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:52:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:52:27,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:52:28,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:52:28,020 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-23 07:52:28,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:52:28 BoogieIcfgContainer [2020-12-23 07:52:28,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:52:28,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:52:28,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:52:28,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:52:28,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:52:27" (1/3) ... [2020-12-23 07:52:28,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3463a59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:52:28, skipping insertion in model container [2020-12-23 07:52:28,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:27" (2/3) ... [2020-12-23 07:52:28,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3463a59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:52:28, skipping insertion in model container [2020-12-23 07:52:28,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:52:28" (3/3) ... [2020-12-23 07:52:28,048 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound100.c [2020-12-23 07:52:28,060 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:52:28,075 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:52:28,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:52:28,145 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:52:28,146 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:52:28,147 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:52:28,147 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:52:28,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:52:28,149 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:52:28,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:52:28,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:52:28,169 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-23 07:52:28,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:52:28,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:28,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:28,177 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]=== [2020-12-23 07:52:28,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:28,185 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 07:52:28,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:28,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202849097] [2020-12-23 07:52:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:28,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202849097] [2020-12-23 07:52:28,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:28,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:52:28,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330726045] [2020-12-23 07:52:28,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:52:28,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:28,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:52:28,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:52:28,450 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-23 07:52:28,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:28,481 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-23 07:52:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:52:28,483 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:52:28,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:28,499 INFO L225 Difference]: With dead ends: 83 [2020-12-23 07:52:28,499 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 07:52:28,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:52:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 07:52:28,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-23 07:52:28,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:52:28,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-23 07:52:28,560 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-23 07:52:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:28,560 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-23 07:52:28,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:52:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-23 07:52:28,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:52:28,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:28,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:28,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:52:28,566 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]=== [2020-12-23 07:52:28,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:28,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 07:52:28,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:28,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744103332] [2020-12-23 07:52:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:28,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744103332] [2020-12-23 07:52:28,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:28,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:52:28,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251278724] [2020-12-23 07:52:28,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:52:28,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:28,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:52:28,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:52:28,736 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-23 07:52:28,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:28,846 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-23 07:52:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:52:28,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 07:52:28,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:28,848 INFO L225 Difference]: With dead ends: 58 [2020-12-23 07:52:28,848 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:52:28,849 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 [2020-12-23 07:52:28,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:52:28,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-23 07:52:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:52:28,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 07:52:28,858 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-23 07:52:28,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:28,859 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 07:52:28,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:52:28,859 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 07:52:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:52:28,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:28,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:28,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:52:28,860 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]=== [2020-12-23 07:52:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:28,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-23 07:52:28,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:28,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456707128] [2020-12-23 07:52:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:28,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456707128] [2020-12-23 07:52:28,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:28,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:52:28,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15554018] [2020-12-23 07:52:28,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:52:28,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:28,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:52:28,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:52:28,939 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-23 07:52:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:29,054 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-23 07:52:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:52:29,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 07:52:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:29,056 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:52:29,056 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:52:29,057 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 [2020-12-23 07:52:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:52:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:52:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:52:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-23 07:52:29,066 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-23 07:52:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:29,067 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-23 07:52:29,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:52:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-23 07:52:29,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:52:29,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:29,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:29,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:52:29,069 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]=== [2020-12-23 07:52:29,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:29,069 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2020-12-23 07:52:29,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:29,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534880112] [2020-12-23 07:52:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:29,088 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:29,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23727295] [2020-12-23 07:52:29,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:29,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:52:29,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:29,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534880112] [2020-12-23 07:52:29,299 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:29,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23727295] [2020-12-23 07:52:29,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:29,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:52:29,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365491001] [2020-12-23 07:52:29,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:52:29,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:29,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:52:29,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:52:29,302 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2020-12-23 07:52:29,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:29,495 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-23 07:52:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:52:29,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:52:29,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:29,498 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:52:29,498 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:52:29,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:52:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:52:29,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-23 07:52:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:52:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-23 07:52:29,514 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-23 07:52:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:29,514 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-23 07:52:29,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:52:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-23 07:52:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:52:29,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:29,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:29,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:29,731 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]=== [2020-12-23 07:52:29,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:29,733 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2020-12-23 07:52:29,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:29,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555400175] [2020-12-23 07:52:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:29,750 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:29,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977578379] [2020-12-23 07:52:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:29,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:52:29,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:30,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555400175] [2020-12-23 07:52:30,120 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:30,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977578379] [2020-12-23 07:52:30,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:30,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 07:52:30,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899964540] [2020-12-23 07:52:30,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:52:30,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:30,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:52:30,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:52:30,123 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2020-12-23 07:52:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:30,532 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-12-23 07:52:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:52:30,533 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-23 07:52:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:30,534 INFO L225 Difference]: With dead ends: 67 [2020-12-23 07:52:30,534 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:52:30,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:52:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:52:30,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-23 07:52:30,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 07:52:30,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-23 07:52:30,544 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 18 [2020-12-23 07:52:30,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:30,545 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-23 07:52:30,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:52:30,545 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-23 07:52:30,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:52:30,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:30,546 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:30,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:30,760 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]=== [2020-12-23 07:52:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2020-12-23 07:52:30,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:30,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44627434] [2020-12-23 07:52:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:30,781 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:30,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408415207] [2020-12-23 07:52:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:30,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 07:52:30,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:31,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44627434] [2020-12-23 07:52:31,103 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:31,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408415207] [2020-12-23 07:52:31,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:31,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:52:31,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781476698] [2020-12-23 07:52:31,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:52:31,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:31,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:52:31,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:52:31,106 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 9 states. [2020-12-23 07:52:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:31,795 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2020-12-23 07:52:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:52:31,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-23 07:52:31,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:31,797 INFO L225 Difference]: With dead ends: 102 [2020-12-23 07:52:31,797 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 07:52:31,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:52:31,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 07:52:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-12-23 07:52:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:52:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-12-23 07:52:31,810 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 22 [2020-12-23 07:52:31,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:31,810 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-12-23 07:52:31,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:52:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-12-23 07:52:31,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:52:31,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:31,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:32,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:32,027 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]=== [2020-12-23 07:52:32,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:32,028 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2020-12-23 07:52:32,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:32,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662069134] [2020-12-23 07:52:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:32,044 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:32,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797240975] [2020-12-23 07:52:32,044 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 [2020-12-23 07:52:32,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:52:32,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:52:32,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:52:32,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:32,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662069134] [2020-12-23 07:52:32,703 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:32,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797240975] [2020-12-23 07:52:32,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:32,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:52:32,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919311908] [2020-12-23 07:52:32,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:52:32,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:32,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:52:32,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:52:32,708 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 12 states. [2020-12-23 07:52:33,176 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-23 07:52:34,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:34,098 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-12-23 07:52:34,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:52:34,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-12-23 07:52:34,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:34,101 INFO L225 Difference]: With dead ends: 127 [2020-12-23 07:52:34,102 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 07:52:34,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-12-23 07:52:34,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 07:52:34,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-12-23 07:52:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 07:52:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-12-23 07:52:34,140 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 29 [2020-12-23 07:52:34,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:34,140 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-12-23 07:52:34,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:52:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-12-23 07:52:34,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:52:34,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:34,142 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, 1, 1, 1, 1] [2020-12-23 07:52:34,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:34,357 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]=== [2020-12-23 07:52:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:34,358 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2020-12-23 07:52:34,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:34,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439635048] [2020-12-23 07:52:34,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:34,371 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:34,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003877080] [2020-12-23 07:52:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:34,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:52:34,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:34,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439635048] [2020-12-23 07:52:34,869 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:34,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003877080] [2020-12-23 07:52:34,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:34,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:52:34,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524410552] [2020-12-23 07:52:34,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:52:34,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:34,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:52:34,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:52:34,871 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 10 states. [2020-12-23 07:52:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:35,850 INFO L93 Difference]: Finished difference Result 125 states and 144 transitions. [2020-12-23 07:52:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:52:35,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 07:52:35,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:35,852 INFO L225 Difference]: With dead ends: 125 [2020-12-23 07:52:35,852 INFO L226 Difference]: Without dead ends: 123 [2020-12-23 07:52:35,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:52:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-23 07:52:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2020-12-23 07:52:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-23 07:52:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2020-12-23 07:52:35,886 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 31 [2020-12-23 07:52:35,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:35,888 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2020-12-23 07:52:35,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:52:35,889 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2020-12-23 07:52:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:52:35,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:35,892 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, 1, 1, 1, 1] [2020-12-23 07:52:36,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:36,108 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]=== [2020-12-23 07:52:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:36,109 INFO L82 PathProgramCache]: Analyzing trace with hash -684568005, now seen corresponding path program 1 times [2020-12-23 07:52:36,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:36,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301090762] [2020-12-23 07:52:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:36,122 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:36,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039694019] [2020-12-23 07:52:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:36,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:52:36,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:36,486 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:52:36,502 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:52:36,507 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:52:36,513 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:36,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301090762] [2020-12-23 07:52:36,938 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:36,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039694019] [2020-12-23 07:52:36,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:36,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:52:36,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384926249] [2020-12-23 07:52:36,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:52:36,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:36,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:52:36,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:52:36,940 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand 12 states. [2020-12-23 07:52:38,203 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2020-12-23 07:52:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:38,459 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2020-12-23 07:52:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:52:38,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-12-23 07:52:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:38,461 INFO L225 Difference]: With dead ends: 131 [2020-12-23 07:52:38,462 INFO L226 Difference]: Without dead ends: 94 [2020-12-23 07:52:38,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-12-23 07:52:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-23 07:52:38,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-12-23 07:52:38,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:52:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2020-12-23 07:52:38,475 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 33 [2020-12-23 07:52:38,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:38,476 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2020-12-23 07:52:38,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:52:38,476 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2020-12-23 07:52:38,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:52:38,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:38,477 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:38,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:38,691 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]=== [2020-12-23 07:52:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:38,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1277177884, now seen corresponding path program 3 times [2020-12-23 07:52:38,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:38,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978202505] [2020-12-23 07:52:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:38,708 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:38,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318448980] [2020-12-23 07:52:38,708 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:38,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:52:38,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:52:38,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:52:38,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-23 07:52:45,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978202505] [2020-12-23 07:52:45,296 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:45,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318448980] [2020-12-23 07:52:45,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:45,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:52:45,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171698964] [2020-12-23 07:52:45,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:52:45,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:45,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:52:45,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=48, Unknown=3, NotChecked=0, Total=72 [2020-12-23 07:52:45,298 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand 9 states. [2020-12-23 07:53:38,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:38,677 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2020-12-23 07:53:38,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:53:38,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-12-23 07:53:38,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:38,679 INFO L225 Difference]: With dead ends: 108 [2020-12-23 07:53:38,679 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 07:53:38,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=40, Invalid=86, Unknown=6, NotChecked=0, Total=132 [2020-12-23 07:53:38,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 07:53:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-12-23 07:53:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:53:38,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-12-23 07:53:38,691 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 36 [2020-12-23 07:53:38,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:38,692 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-12-23 07:53:38,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:53:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-12-23 07:53:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:53:38,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:38,693 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, 1, 1, 1, 1] [2020-12-23 07:53:38,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:53:38,894 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]=== [2020-12-23 07:53:38,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:38,895 INFO L82 PathProgramCache]: Analyzing trace with hash -642892963, now seen corresponding path program 2 times [2020-12-23 07:53:38,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:38,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124003662] [2020-12-23 07:53:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:38,922 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:38,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089116758] [2020-12-23 07:53:38,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:39,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:53:39,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:39,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:53:39,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:39,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124003662] [2020-12-23 07:53:39,679 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:39,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089116758] [2020-12-23 07:53:39,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:39,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:53:39,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395278395] [2020-12-23 07:53:39,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:53:39,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:39,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:53:39,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:53:39,681 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 12 states. [2020-12-23 07:53:41,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:41,157 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2020-12-23 07:53:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:53:41,158 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-12-23 07:53:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:41,160 INFO L225 Difference]: With dead ends: 147 [2020-12-23 07:53:41,160 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 07:53:41,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:53:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 07:53:41,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102. [2020-12-23 07:53:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-23 07:53:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2020-12-23 07:53:41,180 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 38 [2020-12-23 07:53:41,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:41,180 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2020-12-23 07:53:41,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:53:41,180 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2020-12-23 07:53:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:53:41,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:41,186 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, 1, 1, 1, 1] [2020-12-23 07:53:41,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 07:53:41,387 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]=== [2020-12-23 07:53:41,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1707275894, now seen corresponding path program 3 times [2020-12-23 07:53:41,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:41,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017940229] [2020-12-23 07:53:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:41,400 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:41,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729698081] [2020-12-23 07:53:41,400 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 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 [2020-12-23 07:53:41,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:53:41,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:41,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 53 conjunts are in the unsatisfiable core [2020-12-23 07:53:41,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:42,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017940229] [2020-12-23 07:53:42,290 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:42,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729698081] [2020-12-23 07:53:42,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:42,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-23 07:53:42,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352861533] [2020-12-23 07:53:42,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 07:53:42,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:42,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 07:53:42,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:53:42,292 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand 14 states. [2020-12-23 07:53:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:44,400 INFO L93 Difference]: Finished difference Result 146 states and 168 transitions. [2020-12-23 07:53:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:53:44,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-12-23 07:53:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:44,402 INFO L225 Difference]: With dead ends: 146 [2020-12-23 07:53:44,402 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 07:53:44,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2020-12-23 07:53:44,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 07:53:44,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2020-12-23 07:53:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-23 07:53:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2020-12-23 07:53:44,415 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 44 [2020-12-23 07:53:44,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:44,415 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2020-12-23 07:53:44,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 07:53:44,415 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2020-12-23 07:53:44,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:53:44,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:44,416 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, 1, 1, 1, 1] [2020-12-23 07:53:44,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:44,628 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]=== [2020-12-23 07:53:44,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:44,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2100302904, now seen corresponding path program 1 times [2020-12-23 07:53:44,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:44,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968091226] [2020-12-23 07:53:44,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:44,642 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:44,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650268060] [2020-12-23 07:53:44,642 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 [2020-12-23 07:53:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:53:44,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:53:44,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:44,834 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:53:44,837 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:53:44,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:53:44,847 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:53:44,851 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:53:44,855 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:53:44,868 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 07:53:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 07:53:44,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968091226] [2020-12-23 07:53:44,935 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:44,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650268060] [2020-12-23 07:53:44,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:53:44,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:53:44,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845008774] [2020-12-23 07:53:44,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:53:44,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:44,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:53:44,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:53:44,937 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand 5 states. [2020-12-23 07:53:45,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:45,055 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2020-12-23 07:53:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:53:45,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-23 07:53:45,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:45,057 INFO L225 Difference]: With dead ends: 130 [2020-12-23 07:53:45,057 INFO L226 Difference]: Without dead ends: 91 [2020-12-23 07:53:45,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:53:45,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-23 07:53:45,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2020-12-23 07:53:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-23 07:53:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2020-12-23 07:53:45,069 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 44 [2020-12-23 07:53:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:45,069 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2020-12-23 07:53:45,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:53:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2020-12-23 07:53:45,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:53:45,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:45,070 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, 1, 1, 1, 1] [2020-12-23 07:53:45,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:45,284 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]=== [2020-12-23 07:53:45,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:45,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1027491960, now seen corresponding path program 4 times [2020-12-23 07:53:45,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:45,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303927563] [2020-12-23 07:53:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:45,303 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:45,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833939425] [2020-12-23 07:53:45,304 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 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 [2020-12-23 07:53:45,491 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:53:45,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:45,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-23 07:53:45,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:46,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303927563] [2020-12-23 07:53:46,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:46,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833939425] [2020-12-23 07:53:46,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:46,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:53:46,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024574384] [2020-12-23 07:53:46,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:53:46,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:46,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:53:46,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:53:46,362 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand 15 states. [2020-12-23 07:53:47,509 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 07:53:47,658 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 23 [2020-12-23 07:53:48,462 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2020-12-23 07:53:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:48,858 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2020-12-23 07:53:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 07:53:48,860 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-12-23 07:53:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:48,860 INFO L225 Difference]: With dead ends: 126 [2020-12-23 07:53:48,860 INFO L226 Difference]: Without dead ends: 118 [2020-12-23 07:53:48,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2020-12-23 07:53:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-23 07:53:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2020-12-23 07:53:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 07:53:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-12-23 07:53:48,874 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 45 [2020-12-23 07:53:48,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:48,875 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-12-23 07:53:48,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:53:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-12-23 07:53:48,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:53:48,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:48,876 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, 1, 1, 1, 1] [2020-12-23 07:53:49,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:53:49,091 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]=== [2020-12-23 07:53:49,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:49,092 INFO L82 PathProgramCache]: Analyzing trace with hash -14469331, now seen corresponding path program 2 times [2020-12-23 07:53:49,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:49,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737724159] [2020-12-23 07:53:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:49,114 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:49,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395679210] [2020-12-23 07:53:49,118 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 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 [2020-12-23 07:53:49,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:53:49,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:49,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-23 07:53:49,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:50,034 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:50,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737724159] [2020-12-23 07:53:50,035 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:50,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395679210] [2020-12-23 07:53:50,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:50,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 07:53:50,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166083912] [2020-12-23 07:53:50,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 07:53:50,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:50,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 07:53:50,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:53:50,037 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 16 states. [2020-12-23 07:53:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:52,035 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2020-12-23 07:53:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 07:53:52,037 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-12-23 07:53:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:52,038 INFO L225 Difference]: With dead ends: 126 [2020-12-23 07:53:52,038 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 07:53:52,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2020-12-23 07:53:52,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 07:53:52,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-12-23 07:53:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 07:53:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2020-12-23 07:53:52,052 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 46 [2020-12-23 07:53:52,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:52,052 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2020-12-23 07:53:52,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 07:53:52,052 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2020-12-23 07:53:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 07:53:52,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:52,053 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, 1, 1, 1, 1] [2020-12-23 07:53:52,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:53:52,268 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]=== [2020-12-23 07:53:52,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:52,269 INFO L82 PathProgramCache]: Analyzing trace with hash -422546789, now seen corresponding path program 3 times [2020-12-23 07:53:52,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:52,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503850873] [2020-12-23 07:53:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:52,280 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:52,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372942108] [2020-12-23 07:53:52,281 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 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 [2020-12-23 07:53:52,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:53:52,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:52,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:53:52,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:52,881 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2020-12-23 07:53:52,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503850873] [2020-12-23 07:53:52,951 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:52,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372942108] [2020-12-23 07:53:52,951 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:53:52,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:53:52,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:53:52,952 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:53:52,952 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:53:53,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:53:53,199 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:53:53,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:53:53 BoogieIcfgContainer [2020-12-23 07:53:53,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:53:53,200 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:53:53,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:53:53,201 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:53:53,201 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:52:28" (3/4) ... [2020-12-23 07:53:53,205 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:53:53,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:53:53,206 INFO L168 Benchmark]: Toolchain (without parser) took 86110.89 ms. Allocated memory was 152.0 MB in the beginning and 245.4 MB in the end (delta: 93.3 MB). Free memory was 126.4 MB in the beginning and 216.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:53,207 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:53:53,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.63 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 116.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:53,208 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.79 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:53,208 INFO L168 Benchmark]: Boogie Preprocessor took 26.86 ms. Allocated memory is still 152.0 MB. Free memory was 114.5 MB in the beginning and 113.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:53,209 INFO L168 Benchmark]: RCFGBuilder took 565.66 ms. Allocated memory is still 152.0 MB. Free memory was 113.2 MB in the beginning and 131.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:53,209 INFO L168 Benchmark]: TraceAbstraction took 85169.40 ms. Allocated memory was 152.0 MB in the beginning and 245.4 MB in the end (delta: 93.3 MB). Free memory was 131.5 MB in the beginning and 216.6 MB in the end (delta: -85.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:53,210 INFO L168 Benchmark]: Witness Printer took 4.69 ms. Allocated memory is still 245.4 MB. Free memory was 216.6 MB in the beginning and 216.1 MB in the end (delta: 498.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:53:53,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.63 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 116.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.79 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.86 ms. Allocated memory is still 152.0 MB. Free memory was 114.5 MB in the beginning and 113.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 565.66 ms. Allocated memory is still 152.0 MB. Free memory was 113.2 MB in the beginning and 131.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 85169.40 ms. Allocated memory was 152.0 MB in the beginning and 245.4 MB in the end (delta: 93.3 MB). Free memory was 131.5 MB in the beginning and 216.6 MB in the end (delta: -85.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 8.0 GB. * Witness Printer took 4.69 ms. Allocated memory is still 245.4 MB. Free memory was 216.6 MB in the beginning and 216.1 MB in the end (delta: 498.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] unsigned int A, B; [L24] long long r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND TRUE !(r >= d) [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(p != 1)) [L52] d = d / 2 [L53] p = p / 2 [L54] COND TRUE r >= d [L55] r = r - d [L56] q = q + p [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 85.0s, OverallIterations: 16, TraceHistogramMax: 4, AutomataDifference: 67.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 416 SDtfs, 1398 SDslu, 1238 SDs, 0 SdLazy, 2652 SolverSat, 522 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 48.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 501 GetRequests, 290 SyntacticMatches, 2 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 26.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=8, 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, 15 MinimizatonAttempts, 131 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 436 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 421 ConstructedInterpolants, 0 QuantifiedInterpolants, 219146 SizeOfPredicates, 130 NumberOfNonLiveVariables, 1494 ConjunctsInSsa, 412 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 55/248 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...