/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/cohencu-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:11:23,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:11:23,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:11:23,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:11:23,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:11:23,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:11:23,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:11:23,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:11:23,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:11:23,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:11:23,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:11:23,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:11:23,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:11:23,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:11:23,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:11:23,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:11:23,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:11:23,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:11:23,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:11:23,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:11:23,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:11:23,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:11:23,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:11:23,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:11:23,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:11:23,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:11:23,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:11:23,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:11:23,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:11:23,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:11:23,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:11:23,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:11:23,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:11:23,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:11:23,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:11:23,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:11:23,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:11:23,794 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:11:23,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:11:23,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:11:23,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:11:23,799 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:11:23,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:11:23,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:11:23,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:11:23,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:11:23,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:11:23,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:11:23,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:11:23,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:11:23,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:11:23,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:11:23,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:11:23,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:11:23,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:11:23,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:11:23,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:11:23,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:11:23,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:11:23,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:11:23,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:11:23,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:11:23,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:11:24,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:11:24,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:11:24,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:11:24,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:11:24,284 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:11:24,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/cohencu-ll.c [2021-01-06 17:11:24,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a5782247d/03ba8dc707114fcb9e900c243f5af530/FLAG1c1ec63ac [2021-01-06 17:11:25,097 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:11:25,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench/cohencu-ll.c [2021-01-06 17:11:25,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a5782247d/03ba8dc707114fcb9e900c243f5af530/FLAG1c1ec63ac [2021-01-06 17:11:25,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a5782247d/03ba8dc707114fcb9e900c243f5af530 [2021-01-06 17:11:25,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:11:25,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:11:25,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:11:25,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:11:25,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:11:25,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:11:25" (1/1) ... [2021-01-06 17:11:25,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5a59eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25, skipping insertion in model container [2021-01-06 17:11:25,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:11:25" (1/1) ... [2021-01-06 17:11:25,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:11:25,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:11:25,701 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/cohencu-ll.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2021-01-06 17:11:25,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:11:25,742 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:11:25,757 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/cohencu-ll.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2021-01-06 17:11:25,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:11:25,790 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:11:25,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25 WrapperNode [2021-01-06 17:11:25,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:11:25,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:11:25,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:11:25,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:11:25,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25" (1/1) ... [2021-01-06 17:11:25,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25" (1/1) ... [2021-01-06 17:11:25,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:11:25,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:11:25,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:11:25,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:11:25,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25" (1/1) ... [2021-01-06 17:11:25,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25" (1/1) ... [2021-01-06 17:11:25,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25" (1/1) ... [2021-01-06 17:11:25,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25" (1/1) ... [2021-01-06 17:11:25,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25" (1/1) ... [2021-01-06 17:11:25,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25" (1/1) ... [2021-01-06 17:11:25,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25" (1/1) ... [2021-01-06 17:11:25,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:11:25,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:11:25,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:11:25,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:11:25,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:11:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:11:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:11:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:11:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:11:26,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:11:26,517 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-01-06 17:11:26,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:11:26 BoogieIcfgContainer [2021-01-06 17:11:26,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:11:26,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:11:26,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:11:26,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:11:26,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:11:25" (1/3) ... [2021-01-06 17:11:26,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1199a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:11:26, skipping insertion in model container [2021-01-06 17:11:26,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:25" (2/3) ... [2021-01-06 17:11:26,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1199a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:11:26, skipping insertion in model container [2021-01-06 17:11:26,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:11:26" (3/3) ... [2021-01-06 17:11:26,531 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2021-01-06 17:11:26,539 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:11:26,545 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2021-01-06 17:11:26,570 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-01-06 17:11:26,601 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:11:26,601 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:11:26,602 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:11:26,602 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:11:26,602 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:11:26,602 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:11:26,602 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:11:26,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:11:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-01-06 17:11:26,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-06 17:11:26,628 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:26,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-06 17:11:26,629 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:26,636 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-01-06 17:11:26,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:26,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314284868] [2021-01-06 17:11:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:26,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314284868] [2021-01-06 17:11:26,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:26,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:11:26,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723726928] [2021-01-06 17:11:26,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:11:26,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:26,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:11:26,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:11:26,950 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2021-01-06 17:11:27,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:27,212 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2021-01-06 17:11:27,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:11:27,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-01-06 17:11:27,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:27,225 INFO L225 Difference]: With dead ends: 97 [2021-01-06 17:11:27,226 INFO L226 Difference]: Without dead ends: 44 [2021-01-06 17:11:27,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:11:27,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-01-06 17:11:27,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-01-06 17:11:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 17:11:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-01-06 17:11:27,276 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 5 [2021-01-06 17:11:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:27,276 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-01-06 17:11:27,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:11:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-01-06 17:11:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:11:27,277 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:27,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:27,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:11:27,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:27,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:27,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2021-01-06 17:11:27,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:27,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455382094] [2021-01-06 17:11:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:27,298 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:27,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312797688] [2021-01-06 17:11:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:27,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:11:27,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:27,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455382094] [2021-01-06 17:11:27,534 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:27,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312797688] [2021-01-06 17:11:27,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:27,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:11:27,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450417999] [2021-01-06 17:11:27,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:11:27,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:27,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:11:27,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:11:27,538 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2021-01-06 17:11:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:27,731 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2021-01-06 17:11:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:11:27,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2021-01-06 17:11:27,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:27,734 INFO L225 Difference]: With dead ends: 85 [2021-01-06 17:11:27,734 INFO L226 Difference]: Without dead ends: 77 [2021-01-06 17:11:27,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:11:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-06 17:11:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2021-01-06 17:11:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-06 17:11:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2021-01-06 17:11:27,763 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 7 [2021-01-06 17:11:27,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:27,763 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2021-01-06 17:11:27,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:11:27,763 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2021-01-06 17:11:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:11:27,766 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:27,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:27,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:11:27,980 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:27,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:27,983 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2021-01-06 17:11:27,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:27,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577457442] [2021-01-06 17:11:27,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:27,998 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:27,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717852400] [2021-01-06 17:11:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:28,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:11:28,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:28,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577457442] [2021-01-06 17:11:28,107 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:28,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717852400] [2021-01-06 17:11:28,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:28,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:11:28,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964838614] [2021-01-06 17:11:28,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:11:28,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:28,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:11:28,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:11:28,111 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 6 states. [2021-01-06 17:11:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:28,329 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2021-01-06 17:11:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:11:28,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-01-06 17:11:28,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:28,331 INFO L225 Difference]: With dead ends: 76 [2021-01-06 17:11:28,332 INFO L226 Difference]: Without dead ends: 72 [2021-01-06 17:11:28,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:11:28,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-01-06 17:11:28,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2021-01-06 17:11:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-06 17:11:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-01-06 17:11:28,352 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 9 [2021-01-06 17:11:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:28,353 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-01-06 17:11:28,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:11:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-01-06 17:11:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:11:28,354 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:28,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:28,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:28,556 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:28,557 INFO L82 PathProgramCache]: Analyzing trace with hash -976588461, now seen corresponding path program 1 times [2021-01-06 17:11:28,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:28,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868320613] [2021-01-06 17:11:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:28,584 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:28,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867179486] [2021-01-06 17:11:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:28,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:11:28,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:28,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868320613] [2021-01-06 17:11:28,749 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:28,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867179486] [2021-01-06 17:11:28,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:28,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:11:28,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897018668] [2021-01-06 17:11:28,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:11:28,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:28,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:11:28,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:11:28,752 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 6 states. [2021-01-06 17:11:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:28,917 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-01-06 17:11:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:11:28,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 17:11:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:28,919 INFO L225 Difference]: With dead ends: 73 [2021-01-06 17:11:28,919 INFO L226 Difference]: Without dead ends: 55 [2021-01-06 17:11:28,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:11:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-01-06 17:11:28,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-01-06 17:11:28,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 17:11:28,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-01-06 17:11:28,929 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 11 [2021-01-06 17:11:28,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:28,930 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-01-06 17:11:28,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:11:28,930 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-01-06 17:11:28,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:11:28,931 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:28,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:29,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:29,147 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:29,148 INFO L82 PathProgramCache]: Analyzing trace with hash -417136811, now seen corresponding path program 1 times [2021-01-06 17:11:29,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:29,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998963024] [2021-01-06 17:11:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:29,162 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:29,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135589360] [2021-01-06 17:11:29,163 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 [2021-01-06 17:11:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:29,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:11:29,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:29,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998963024] [2021-01-06 17:11:29,338 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:29,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135589360] [2021-01-06 17:11:29,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:11:29,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:11:29,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966936785] [2021-01-06 17:11:29,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:11:29,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:29,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:11:29,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:11:29,340 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 7 states. [2021-01-06 17:11:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:29,574 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2021-01-06 17:11:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:11:29,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 17:11:29,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:29,582 INFO L225 Difference]: With dead ends: 96 [2021-01-06 17:11:29,582 INFO L226 Difference]: Without dead ends: 90 [2021-01-06 17:11:29,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:11:29,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-01-06 17:11:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2021-01-06 17:11:29,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:11:29,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2021-01-06 17:11:29,615 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 18 [2021-01-06 17:11:29,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:29,615 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2021-01-06 17:11:29,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:11:29,616 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2021-01-06 17:11:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:11:29,617 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:29,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:29,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:29,831 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:29,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:29,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1436360968, now seen corresponding path program 1 times [2021-01-06 17:11:29,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:29,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902996890] [2021-01-06 17:11:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:29,850 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:29,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217289193] [2021-01-06 17:11:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:29,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:11:29,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:30,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902996890] [2021-01-06 17:11:30,036 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:30,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217289193] [2021-01-06 17:11:30,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:11:30,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:11:30,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351340490] [2021-01-06 17:11:30,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:11:30,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:30,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:11:30,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:11:30,051 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 7 states. [2021-01-06 17:11:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:30,251 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2021-01-06 17:11:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:11:30,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-06 17:11:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:30,253 INFO L225 Difference]: With dead ends: 89 [2021-01-06 17:11:30,253 INFO L226 Difference]: Without dead ends: 79 [2021-01-06 17:11:30,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:11:30,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-06 17:11:30,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2021-01-06 17:11:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 17:11:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-01-06 17:11:30,263 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 20 [2021-01-06 17:11:30,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:30,263 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-01-06 17:11:30,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:11:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-01-06 17:11:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:11:30,265 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:30,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:30,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:11:30,479 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:30,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:30,480 INFO L82 PathProgramCache]: Analyzing trace with hash -914405458, now seen corresponding path program 1 times [2021-01-06 17:11:30,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:30,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603175452] [2021-01-06 17:11:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:30,499 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:30,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115466789] [2021-01-06 17:11:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:30,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:11:30,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:30,924 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:11:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:30,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603175452] [2021-01-06 17:11:30,952 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:30,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115466789] [2021-01-06 17:11:30,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:11:30,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:11:30,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466244053] [2021-01-06 17:11:30,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:11:30,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:30,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:11:30,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:11:30,954 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 8 states. [2021-01-06 17:11:31,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:31,248 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-01-06 17:11:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:11:31,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-01-06 17:11:31,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:31,250 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:11:31,250 INFO L226 Difference]: Without dead ends: 77 [2021-01-06 17:11:31,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:11:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-06 17:11:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2021-01-06 17:11:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 17:11:31,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2021-01-06 17:11:31,261 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 29 [2021-01-06 17:11:31,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:31,261 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2021-01-06 17:11:31,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:11:31,262 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2021-01-06 17:11:31,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:11:31,263 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:31,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-01-06 17:11:31,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:31,475 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:31,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:31,476 INFO L82 PathProgramCache]: Analyzing trace with hash -917268371, now seen corresponding path program 2 times [2021-01-06 17:11:31,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:31,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465881186] [2021-01-06 17:11:31,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:31,490 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:31,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993250003] [2021-01-06 17:11:31,491 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:31,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:11:31,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:11:31,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:11:31,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:31,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465881186] [2021-01-06 17:11:31,712 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:31,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993250003] [2021-01-06 17:11:31,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:11:31,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:11:31,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464847770] [2021-01-06 17:11:31,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:11:31,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:31,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:11:31,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:11:31,716 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 7 states. [2021-01-06 17:11:32,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:32,063 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2021-01-06 17:11:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:11:32,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2021-01-06 17:11:32,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:32,065 INFO L225 Difference]: With dead ends: 118 [2021-01-06 17:11:32,065 INFO L226 Difference]: Without dead ends: 116 [2021-01-06 17:11:32,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:11:32,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-01-06 17:11:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 77. [2021-01-06 17:11:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 17:11:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2021-01-06 17:11:32,079 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 29 [2021-01-06 17:11:32,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:32,080 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2021-01-06 17:11:32,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:11:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2021-01-06 17:11:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:11:32,082 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:32,082 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:32,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:32,296 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:32,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:32,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1724808433, now seen corresponding path program 1 times [2021-01-06 17:11:32,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:32,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662974222] [2021-01-06 17:11:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:32,311 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:32,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898997866] [2021-01-06 17:11:32,311 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:32,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:11:32,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:32,487 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:11:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:32,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662974222] [2021-01-06 17:11:32,504 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:32,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898997866] [2021-01-06 17:11:32,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:11:32,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:11:32,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370607025] [2021-01-06 17:11:32,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:11:32,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:32,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:11:32,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:11:32,507 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 8 states. [2021-01-06 17:11:32,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:32,724 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-01-06 17:11:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:11:32,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:11:32,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:32,725 INFO L225 Difference]: With dead ends: 81 [2021-01-06 17:11:32,725 INFO L226 Difference]: Without dead ends: 79 [2021-01-06 17:11:32,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:11:32,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-06 17:11:32,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-01-06 17:11:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 17:11:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2021-01-06 17:11:32,735 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 31 [2021-01-06 17:11:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:32,736 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2021-01-06 17:11:32,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:11:32,736 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2021-01-06 17:11:32,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:11:32,737 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:32,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-01-06 17:11:32,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:11:32,952 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:32,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:32,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1026452976, now seen corresponding path program 2 times [2021-01-06 17:11:32,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:32,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832928707] [2021-01-06 17:11:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:32,967 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:32,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552992327] [2021-01-06 17:11:32,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:33,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:11:33,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:11:33,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:11:33,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:33,129 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:33,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832928707] [2021-01-06 17:11:33,203 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:33,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552992327] [2021-01-06 17:11:33,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:11:33,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:11:33,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540033353] [2021-01-06 17:11:33,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:11:33,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:33,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:11:33,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:11:33,206 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 9 states. [2021-01-06 17:11:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:33,513 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2021-01-06 17:11:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:11:33,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2021-01-06 17:11:33,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:33,514 INFO L225 Difference]: With dead ends: 115 [2021-01-06 17:11:33,514 INFO L226 Difference]: Without dead ends: 103 [2021-01-06 17:11:33,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:11:33,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-01-06 17:11:33,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2021-01-06 17:11:33,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-06 17:11:33,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-01-06 17:11:33,531 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 31 [2021-01-06 17:11:33,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:33,531 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-01-06 17:11:33,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:11:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-01-06 17:11:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:11:33,537 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:33,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-01-06 17:11:33,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:33,753 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:33,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:33,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1421324371, now seen corresponding path program 1 times [2021-01-06 17:11:33,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:33,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176851890] [2021-01-06 17:11:33,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:33,767 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:33,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058200842] [2021-01-06 17:11:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:33,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:11:33,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:33,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176851890] [2021-01-06 17:11:33,975 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:33,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058200842] [2021-01-06 17:11:33,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:11:33,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:11:33,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368492739] [2021-01-06 17:11:33,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:11:33,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:33,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:11:33,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:11:33,977 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 7 states. [2021-01-06 17:11:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:34,196 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2021-01-06 17:11:34,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:11:34,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2021-01-06 17:11:34,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:34,197 INFO L225 Difference]: With dead ends: 103 [2021-01-06 17:11:34,198 INFO L226 Difference]: Without dead ends: 87 [2021-01-06 17:11:34,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:11:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-01-06 17:11:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2021-01-06 17:11:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-06 17:11:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2021-01-06 17:11:34,209 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 33 [2021-01-06 17:11:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:34,210 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2021-01-06 17:11:34,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:11:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2021-01-06 17:11:34,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 17:11:34,211 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:34,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:34,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:34,425 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:34,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:34,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1915973738, now seen corresponding path program 2 times [2021-01-06 17:11:34,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:34,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624360096] [2021-01-06 17:11:34,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:34,438 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:34,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634593540] [2021-01-06 17:11:34,438 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:34,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:11:34,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:11:34,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-06 17:11:34,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:34,754 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:11:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:34,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624360096] [2021-01-06 17:11:34,776 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:34,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634593540] [2021-01-06 17:11:34,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:11:34,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:11:34,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002009892] [2021-01-06 17:11:34,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:11:34,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:34,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:11:34,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:11:34,779 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 11 states. [2021-01-06 17:11:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:35,275 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-01-06 17:11:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:11:35,275 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2021-01-06 17:11:35,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:35,276 INFO L225 Difference]: With dead ends: 86 [2021-01-06 17:11:35,276 INFO L226 Difference]: Without dead ends: 84 [2021-01-06 17:11:35,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:11:35,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-06 17:11:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-01-06 17:11:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-06 17:11:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2021-01-06 17:11:35,285 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 40 [2021-01-06 17:11:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:35,285 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2021-01-06 17:11:35,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:11:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2021-01-06 17:11:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 17:11:35,286 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:35,286 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-01-06 17:11:35,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:11:35,501 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:35,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:35,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1918836651, now seen corresponding path program 3 times [2021-01-06 17:11:35,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:35,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806232503] [2021-01-06 17:11:35,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:35,517 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:35,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767446738] [2021-01-06 17:11:35,517 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:35,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:11:35,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:11:35,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:11:35,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:54,398 WARN L197 SmtUtils]: Spent 10.94 s on a formula simplification that was a NOOP. DAG size: 38 [2021-01-06 17:12:54,542 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 30 [2021-01-06 17:12:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-06 17:12:54,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806232503] [2021-01-06 17:12:54,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:54,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767446738] [2021-01-06 17:12:54,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:54,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:12:54,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605880614] [2021-01-06 17:12:54,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:12:54,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:54,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:12:54,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=79, Unknown=6, NotChecked=0, Total=110 [2021-01-06 17:12:54,670 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 11 states. [2021-01-06 17:13:25,905 WARN L197 SmtUtils]: Spent 31.14 s on a formula simplification that was a NOOP. DAG size: 41 [2021-01-06 17:13:36,055 WARN L197 SmtUtils]: Spent 10.12 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-06 17:14:43,153 WARN L197 SmtUtils]: Spent 31.20 s on a formula simplification that was a NOOP. DAG size: 49