/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-u_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:54:32,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:54:32,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:54:32,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:54:32,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:54:32,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:54:32,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:54:32,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:54:32,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:54:32,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:54:32,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:54:32,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:54:32,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:54:32,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:54:32,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:54:32,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:54:32,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:54:32,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:54:32,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:54:32,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:54:32,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:54:32,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:54:32,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:54:32,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:54:32,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:54:32,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:54:32,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:54:32,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:54:32,511 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 07:54:32,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:54:32,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:54:32,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:54:32,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:54:32,576 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:54:32,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:54:32,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:54:32,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:54:32,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:54:32,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:54:32,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:54:32,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:54:32,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:54:32,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:54:32,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:54:32,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:54:32,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:54:32,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:54:32,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:54:32,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:54:32,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:54:32,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:54:32,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:54:32,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:54:32,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:54:32,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:54:33,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:54:33,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:54:33,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:54:33,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:54:33,058 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:54:33,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound1.c [2020-12-23 07:54:33,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/45e653757/2f02fc96303242d8b0edbc5ac7fad3d9/FLAGb4f3e3596 [2020-12-23 07:54:33,854 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:54:33,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound1.c [2020-12-23 07:54:33,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/45e653757/2f02fc96303242d8b0edbc5ac7fad3d9/FLAGb4f3e3596 [2020-12-23 07:54:34,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/45e653757/2f02fc96303242d8b0edbc5ac7fad3d9 [2020-12-23 07:54:34,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:54:34,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:54:34,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:54:34,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:54:34,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:54:34,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:34" (1/1) ... [2020-12-23 07:54:34,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576faa88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34, skipping insertion in model container [2020-12-23 07:54:34,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:34" (1/1) ... [2020-12-23 07:54:34,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:54:34,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:54:34,429 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-u_valuebound1.c[537,550] 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 07:54:34,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:54:34,464 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:54:34,480 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-u_valuebound1.c[537,550] 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 07:54:34,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:54:34,509 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:54:34,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34 WrapperNode [2020-12-23 07:54:34,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:54:34,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:54:34,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:54:34,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:54:34,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34" (1/1) ... [2020-12-23 07:54:34,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34" (1/1) ... [2020-12-23 07:54:34,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:54:34,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:54:34,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:54:34,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:54:34,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34" (1/1) ... [2020-12-23 07:54:34,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34" (1/1) ... [2020-12-23 07:54:34,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34" (1/1) ... [2020-12-23 07:54:34,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34" (1/1) ... [2020-12-23 07:54:34,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34" (1/1) ... [2020-12-23 07:54:34,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34" (1/1) ... [2020-12-23 07:54:34,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34" (1/1) ... [2020-12-23 07:54:34,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:54:34,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:54:34,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:54:34,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:54:34,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34" (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 07:54:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:54:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:54:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:54:34,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:54:35,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:54:35,312 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-23 07:54:35,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:35 BoogieIcfgContainer [2020-12-23 07:54:35,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:54:35,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:54:35,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:54:35,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:54:35,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:54:34" (1/3) ... [2020-12-23 07:54:35,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dde05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:35, skipping insertion in model container [2020-12-23 07:54:35,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:34" (2/3) ... [2020-12-23 07:54:35,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dde05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:35, skipping insertion in model container [2020-12-23 07:54:35,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:35" (3/3) ... [2020-12-23 07:54:35,323 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound1.c [2020-12-23 07:54:35,331 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:54:35,336 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:54:35,356 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:54:35,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:54:35,388 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:54:35,388 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:54:35,388 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:54:35,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:54:35,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:54:35,389 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:54:35,389 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:54:35,407 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-23 07:54:35,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:54:35,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:35,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:35,415 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 07:54:35,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:35,422 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 07:54:35,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:35,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837065044] [2020-12-23 07:54:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:35,602 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 07:54:35,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837065044] [2020-12-23 07:54:35,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:35,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:54:35,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972560110] [2020-12-23 07:54:35,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:54:35,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:35,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:54:35,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:54:35,630 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-23 07:54:35,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:35,653 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-23 07:54:35,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:54:35,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:54:35,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:35,665 INFO L225 Difference]: With dead ends: 83 [2020-12-23 07:54:35,665 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 07:54:35,669 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 07:54:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 07:54:35,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-23 07:54:35,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:54:35,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-23 07:54:35,711 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-23 07:54:35,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:35,711 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-23 07:54:35,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:54:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-23 07:54:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:54:35,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:35,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:35,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:54:35,714 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 07:54:35,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:35,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 07:54:35,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:35,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676264914] [2020-12-23 07:54:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:35,830 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 07:54:35,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676264914] [2020-12-23 07:54:35,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:35,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:54:35,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517000584] [2020-12-23 07:54:35,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:54:35,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:35,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:54:35,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:35,835 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-23 07:54:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:36,018 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-23 07:54:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:54:36,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 07:54:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:36,021 INFO L225 Difference]: With dead ends: 58 [2020-12-23 07:54:36,021 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:54:36,022 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 07:54:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:54:36,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-23 07:54:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:54:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 07:54:36,032 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-23 07:54:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:36,033 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 07:54:36,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:54:36,033 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 07:54:36,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:54:36,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:36,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:36,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:54:36,034 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 07:54:36,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:36,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-23 07:54:36,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:36,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678293700] [2020-12-23 07:54:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:36,220 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 07:54:36,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678293700] [2020-12-23 07:54:36,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:36,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:54:36,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659952018] [2020-12-23 07:54:36,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:54:36,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:36,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:54:36,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:36,224 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-23 07:54:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:36,306 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-23 07:54:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:54:36,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 07:54:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:36,308 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:54:36,309 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:54:36,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 07:54:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:54:36,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:54:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:54:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-23 07:54:36,316 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-23 07:54:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:36,317 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-23 07:54:36,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:54:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-23 07:54:36,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:54:36,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:36,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:36,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:54:36,318 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 07:54:36,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:36,319 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2020-12-23 07:54:36,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:36,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483106914] [2020-12-23 07:54:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:36,337 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:36,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142613558] [2020-12-23 07:54:36,338 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 07:54:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:36,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:54:36,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:36,593 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 07:54:36,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483106914] [2020-12-23 07:54:36,595 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:36,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142613558] [2020-12-23 07:54:36,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:36,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:54:36,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371441264] [2020-12-23 07:54:36,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:54:36,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:36,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:54:36,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:54:36,602 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 7 states. [2020-12-23 07:54:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:37,010 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-23 07:54:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:54:37,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-23 07:54:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:37,013 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:54:37,013 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:54:37,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:54:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:54:37,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-23 07:54:37,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:54:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-23 07:54:37,039 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-23 07:54:37,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:37,040 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-23 07:54:37,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:54:37,040 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-23 07:54:37,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:54:37,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:37,041 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 07:54:37,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:37,257 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 07:54:37,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:37,259 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2020-12-23 07:54:37,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:37,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726868352] [2020-12-23 07:54:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:37,276 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:37,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009824172] [2020-12-23 07:54:37,277 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 07:54:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:37,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:54:37,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:37,553 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 07:54:37,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726868352] [2020-12-23 07:54:37,554 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:37,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009824172] [2020-12-23 07:54:37,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:37,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 07:54:37,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689656083] [2020-12-23 07:54:37,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:54:37,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:37,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:54:37,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:54:37,556 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2020-12-23 07:54:37,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:37,959 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-12-23 07:54:37,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:54:37,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-23 07:54:37,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:37,961 INFO L225 Difference]: With dead ends: 53 [2020-12-23 07:54:37,961 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 07:54:37,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:54:37,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 07:54:37,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-23 07:54:37,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 07:54:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-12-23 07:54:37,969 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 18 [2020-12-23 07:54:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:37,970 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-12-23 07:54:37,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:54:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-12-23 07:54:37,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:54:37,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:37,971 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 07:54:38,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:38,185 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 07:54:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:38,187 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2020-12-23 07:54:38,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:38,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665742662] [2020-12-23 07:54:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:38,203 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:38,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584216403] [2020-12-23 07:54:38,204 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 07:54:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:38,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:54:38,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:38,668 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 07:54:38,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665742662] [2020-12-23 07:54:38,670 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:38,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584216403] [2020-12-23 07:54:38,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:38,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:54:38,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451896747] [2020-12-23 07:54:38,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:54:38,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:38,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:54:38,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:54:38,689 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 10 states. [2020-12-23 07:54:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:39,439 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-12-23 07:54:39,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:54:39,440 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-12-23 07:54:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:39,441 INFO L225 Difference]: With dead ends: 71 [2020-12-23 07:54:39,441 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:54:39,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:54:39,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:54:39,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-12-23 07:54:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:54:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-12-23 07:54:39,450 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2020-12-23 07:54:39,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:39,450 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-12-23 07:54:39,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:54:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-12-23 07:54:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 07:54:39,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:39,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:39,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:39,655 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 07:54:39,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:39,656 INFO L82 PathProgramCache]: Analyzing trace with hash 941114475, now seen corresponding path program 1 times [2020-12-23 07:54:39,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:39,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644946806] [2020-12-23 07:54:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:39,671 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:39,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021156053] [2020-12-23 07:54:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:39,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:54:39,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 07:54:39,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644946806] [2020-12-23 07:54:39,888 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:39,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021156053] [2020-12-23 07:54:39,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:39,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:54:39,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985493327] [2020-12-23 07:54:39,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:54:39,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:39,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:54:39,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:39,892 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-12-23 07:54:40,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:40,046 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2020-12-23 07:54:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:54:40,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-23 07:54:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:40,048 INFO L225 Difference]: With dead ends: 72 [2020-12-23 07:54:40,049 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 07:54:40,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:54:40,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 07:54:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-12-23 07:54:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 07:54:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-12-23 07:54:40,061 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 25 [2020-12-23 07:54:40,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:40,061 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-12-23 07:54:40,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:54:40,062 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-12-23 07:54:40,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:54:40,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:40,063 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 07:54:40,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:40,277 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 07:54:40,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:40,278 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2020-12-23 07:54:40,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:40,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488645333] [2020-12-23 07:54:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:40,296 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:40,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748379094] [2020-12-23 07:54:40,297 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 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 07:54:40,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:54:40,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:40,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:54:40,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:40,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488645333] [2020-12-23 07:54:40,736 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:40,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748379094] [2020-12-23 07:54:40,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:40,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:54:40,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468617403] [2020-12-23 07:54:40,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:54:40,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:40,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:54:40,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:54:40,739 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 10 states. [2020-12-23 07:54:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:41,220 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-12-23 07:54:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:54:41,221 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-12-23 07:54:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:41,222 INFO L225 Difference]: With dead ends: 113 [2020-12-23 07:54:41,222 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 07:54:41,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:54:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 07:54:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 53. [2020-12-23 07:54:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 07:54:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-12-23 07:54:41,232 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 29 [2020-12-23 07:54:41,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:41,233 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-12-23 07:54:41,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:54:41,233 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-12-23 07:54:41,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:54:41,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:41,234 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 07:54:41,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:41,442 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 07:54:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:41,443 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2020-12-23 07:54:41,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:41,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661865695] [2020-12-23 07:54:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:41,457 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:41,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581414543] [2020-12-23 07:54:41,458 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 07:54:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:41,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-23 07:54:41,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:42,382 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:42,505 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:54:42,580 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 07:54:42,589 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 07:54:42,777 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 07:54:42,787 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 07:54:42,956 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 07:54:42,977 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 07:54:43,082 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 07:54:43,364 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:54:43,370 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:54:43,498 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 07:54:43,505 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 07:54:43,642 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 07:54:43,666 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:54:43,757 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 07:54:43,868 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 07:54:44,446 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 07:54:44,466 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 07:54:44,555 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2020-12-23 07:54:44,906 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:45,655 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:47,119 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:49,159 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:51,133 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:52,990 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:54,519 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:56,894 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 07:54:56,945 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2020-12-23 07:55:08,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661865695] [2020-12-23 07:55:08,092 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:08,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581414543] [2020-12-23 07:55:08,092 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-23 07:55:08,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:08,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:55:08,092 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:55:08,092 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:55:08,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:08,320 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:55:08,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:55:08 BoogieIcfgContainer [2020-12-23 07:55:08,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:55:08,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:55:08,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:55:08,321 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:55:08,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:35" (3/4) ... [2020-12-23 07:55:08,326 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:55:08,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:55:08,328 INFO L168 Benchmark]: Toolchain (without parser) took 34096.85 ms. Allocated memory was 156.2 MB in the beginning and 518.0 MB in the end (delta: 361.8 MB). Free memory was 132.0 MB in the beginning and 382.3 MB in the end (delta: -250.2 MB). Peak memory consumption was 112.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:08,329 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:55:08,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.52 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 121.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:08,330 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.36 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:08,331 INFO L168 Benchmark]: Boogie Preprocessor took 65.28 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 118.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:08,332 INFO L168 Benchmark]: RCFGBuilder took 683.69 ms. Allocated memory is still 156.2 MB. Free memory was 118.1 MB in the beginning and 136.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:08,333 INFO L168 Benchmark]: TraceAbstraction took 33004.55 ms. Allocated memory was 156.2 MB in the beginning and 518.0 MB in the end (delta: 361.8 MB). Free memory was 136.7 MB in the beginning and 382.8 MB in the end (delta: -246.1 MB). Peak memory consumption was 314.9 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:08,333 INFO L168 Benchmark]: Witness Printer took 5.11 ms. Allocated memory is still 518.0 MB. Free memory was 382.8 MB in the beginning and 382.3 MB in the end (delta: 519.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:55:08,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.52 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 121.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.36 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.28 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 118.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 683.69 ms. Allocated memory is still 156.2 MB. Free memory was 118.1 MB in the beginning and 136.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 33004.55 ms. Allocated memory was 156.2 MB in the beginning and 518.0 MB in the end (delta: 361.8 MB). Free memory was 136.7 MB in the beginning and 382.8 MB in the end (delta: -246.1 MB). Peak memory consumption was 314.9 MB. Max. memory is 8.0 GB. * Witness Printer took 5.11 ms. Allocated memory is still 518.0 MB. Free memory was 382.8 MB in the beginning and 382.3 MB in the end (delta: 519.6 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] unsigned int 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 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 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: 32.9s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 235 SDtfs, 842 SDslu, 340 SDs, 0 SdLazy, 432 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 79 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 29325 SizeOfPredicates, 46 NumberOfNonLiveVariables, 467 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 19/32 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...