/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 08:15:07,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 08:15:07,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 08:15:07,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 08:15:07,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 08:15:07,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 08:15:07,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 08:15:07,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 08:15:08,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 08:15:08,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 08:15:08,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 08:15:08,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 08:15:08,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 08:15:08,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 08:15:08,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 08:15:08,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 08:15:08,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 08:15:08,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 08:15:08,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 08:15:08,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 08:15:08,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 08:15:08,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 08:15:08,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 08:15:08,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 08:15:08,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 08:15:08,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 08:15:08,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 08:15:08,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 08:15:08,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 08:15:08,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 08:15:08,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 08:15:08,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 08:15:08,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 08:15:08,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 08:15:08,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 08:15:08,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 08:15:08,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 08:15:08,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 08:15:08,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 08:15:08,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 08:15:08,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 08:15:08,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 08:15:08,126 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 08:15:08,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 08:15:08,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 08:15:08,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 08:15:08,131 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 08:15:08,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 08:15:08,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 08:15:08,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 08:15:08,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 08:15:08,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 08:15:08,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 08:15:08,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 08:15:08,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 08:15:08,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 08:15:08,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 08:15:08,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 08:15:08,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 08:15:08,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:15:08,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 08:15:08,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 08:15:08,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 08:15:08,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 08:15:08,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 08:15:08,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 08:15:08,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 08:15:08,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 08:15:08,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 08:15:08,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 08:15:08,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 08:15:08,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 08:15:08,588 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 08:15:08,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c [2020-12-23 08:15:08,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f41498a6c/eb8777a408bf4582959b18c12047a12e/FLAG60d9368f1 [2020-12-23 08:15:09,252 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 08:15:09,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c [2020-12-23 08:15:09,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f41498a6c/eb8777a408bf4582959b18c12047a12e/FLAG60d9368f1 [2020-12-23 08:15:09,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f41498a6c/eb8777a408bf4582959b18c12047a12e [2020-12-23 08:15:09,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 08:15:09,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 08:15:09,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 08:15:09,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 08:15:09,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 08:15:09,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:15:09" (1/1) ... [2020-12-23 08:15:09,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7341ddca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09, skipping insertion in model container [2020-12-23 08:15:09,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:15:09" (1/1) ... [2020-12-23 08:15:09,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 08:15:09,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 08:15:09,785 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 08:15:09,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:15:09,813 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 08:15:09,826 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 08:15:09,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:15:09,850 INFO L208 MainTranslator]: Completed translation [2020-12-23 08:15:09,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09 WrapperNode [2020-12-23 08:15:09,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 08:15:09,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 08:15:09,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 08:15:09,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 08:15:09,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09" (1/1) ... [2020-12-23 08:15:09,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09" (1/1) ... [2020-12-23 08:15:09,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 08:15:09,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 08:15:09,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 08:15:09,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 08:15:09,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09" (1/1) ... [2020-12-23 08:15:09,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09" (1/1) ... [2020-12-23 08:15:09,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09" (1/1) ... [2020-12-23 08:15:09,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09" (1/1) ... [2020-12-23 08:15:09,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09" (1/1) ... [2020-12-23 08:15:09,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09" (1/1) ... [2020-12-23 08:15:09,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09" (1/1) ... [2020-12-23 08:15:09,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 08:15:09,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 08:15:09,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 08:15:09,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 08:15:09,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:15:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 08:15:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 08:15:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 08:15:10,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 08:15:10,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 08:15:10,339 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-23 08:15:10,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:10 BoogieIcfgContainer [2020-12-23 08:15:10,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 08:15:10,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 08:15:10,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 08:15:10,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 08:15:10,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:15:09" (1/3) ... [2020-12-23 08:15:10,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1d4071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:15:10, skipping insertion in model container [2020-12-23 08:15:10,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:09" (2/3) ... [2020-12-23 08:15:10,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1d4071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:15:10, skipping insertion in model container [2020-12-23 08:15:10,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:10" (3/3) ... [2020-12-23 08:15:10,365 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound10.c [2020-12-23 08:15:10,375 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 08:15:10,388 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-23 08:15:10,433 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 08:15:10,466 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 08:15:10,466 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 08:15:10,466 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 08:15:10,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 08:15:10,467 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 08:15:10,467 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 08:15:10,467 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 08:15:10,467 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 08:15:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-23 08:15:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 08:15:10,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:10,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:10,491 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:10,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-23 08:15:10,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:10,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280147948] [2020-12-23 08:15:10,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:10,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280147948] [2020-12-23 08:15:10,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:10,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 08:15:10,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879201628] [2020-12-23 08:15:10,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 08:15:10,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:10,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 08:15:10,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:15:10,686 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-23 08:15:10,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:10,720 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-12-23 08:15:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 08:15:10,726 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 08:15:10,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:10,734 INFO L225 Difference]: With dead ends: 63 [2020-12-23 08:15:10,735 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 08:15:10,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:15:10,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 08:15:10,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 08:15:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 08:15:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-23 08:15:10,775 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-12-23 08:15:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:10,775 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-23 08:15:10,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 08:15:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-23 08:15:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 08:15:10,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:10,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:10,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 08:15:10,777 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-23 08:15:10,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:10,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616362930] [2020-12-23 08:15:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:10,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616362930] [2020-12-23 08:15:10,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:10,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 08:15:10,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923433422] [2020-12-23 08:15:10,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 08:15:10,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:10,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 08:15:10,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 08:15:10,920 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-12-23 08:15:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:11,062 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-12-23 08:15:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 08:15:11,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 08:15:11,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:11,068 INFO L225 Difference]: With dead ends: 54 [2020-12-23 08:15:11,068 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 08:15:11,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:15:11,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 08:15:11,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-23 08:15:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 08:15:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-12-23 08:15:11,080 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-12-23 08:15:11,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:11,081 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-12-23 08:15:11,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 08:15:11,081 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-12-23 08:15:11,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 08:15:11,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:11,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:11,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 08:15:11,083 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:11,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:11,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-23 08:15:11,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:11,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663058976] [2020-12-23 08:15:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:11,103 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:11,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953065250] [2020-12-23 08:15:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:11,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 08:15:11,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:11,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663058976] [2020-12-23 08:15:11,274 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:11,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953065250] [2020-12-23 08:15:11,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:11,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 08:15:11,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764367469] [2020-12-23 08:15:11,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:15:11,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:11,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:15:11,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:11,280 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2020-12-23 08:15:11,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:11,416 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-12-23 08:15:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 08:15:11,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-23 08:15:11,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:11,417 INFO L225 Difference]: With dead ends: 51 [2020-12-23 08:15:11,417 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 08:15:11,418 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 [2020-12-23 08:15:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 08:15:11,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-12-23 08:15:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 08:15:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-12-23 08:15:11,426 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 9 [2020-12-23 08:15:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:11,426 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-12-23 08:15:11,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:15:11,427 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-12-23 08:15:11,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 08:15:11,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:11,428 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:11,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 08:15:11,643 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:11,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:11,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1783845574, now seen corresponding path program 1 times [2020-12-23 08:15:11,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:11,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255978271] [2020-12-23 08:15:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:11,659 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:11,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184953914] [2020-12-23 08:15:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:11,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 08:15:11,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:11,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255978271] [2020-12-23 08:15:11,787 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:11,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184953914] [2020-12-23 08:15:11,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:11,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 08:15:11,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306400626] [2020-12-23 08:15:11,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:15:11,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:11,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:15:11,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:15:11,791 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-12-23 08:15:11,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:11,900 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-12-23 08:15:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:15:11,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 08:15:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:11,902 INFO L225 Difference]: With dead ends: 61 [2020-12-23 08:15:11,902 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 08:15:11,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:11,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 08:15:11,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-12-23 08:15:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 08:15:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-12-23 08:15:11,913 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2020-12-23 08:15:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:11,913 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-12-23 08:15:11,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:15:11,913 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-12-23 08:15:11,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 08:15:11,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:11,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:12,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:12,129 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:12,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:12,130 INFO L82 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2020-12-23 08:15:12,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:12,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777694367] [2020-12-23 08:15:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:12,144 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:12,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17378600] [2020-12-23 08:15:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:12,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 08:15:12,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:12,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777694367] [2020-12-23 08:15:12,301 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:12,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17378600] [2020-12-23 08:15:12,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:12,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 08:15:12,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167923458] [2020-12-23 08:15:12,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 08:15:12,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:12,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 08:15:12,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:12,304 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 7 states. [2020-12-23 08:15:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:12,423 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-12-23 08:15:12,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:15:12,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-23 08:15:12,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:12,424 INFO L225 Difference]: With dead ends: 58 [2020-12-23 08:15:12,424 INFO L226 Difference]: Without dead ends: 44 [2020-12-23 08:15:12,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:12,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-23 08:15:12,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-12-23 08:15:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 08:15:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-12-23 08:15:12,432 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 16 [2020-12-23 08:15:12,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:12,433 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-12-23 08:15:12,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 08:15:12,433 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-12-23 08:15:12,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 08:15:12,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:12,434 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:12,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:12,650 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:12,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:12,652 INFO L82 PathProgramCache]: Analyzing trace with hash -435278385, now seen corresponding path program 2 times [2020-12-23 08:15:12,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:12,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448840874] [2020-12-23 08:15:12,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:12,666 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:12,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128547425] [2020-12-23 08:15:12,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:12,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:15:12,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:12,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 08:15:12,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:12,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448840874] [2020-12-23 08:15:12,767 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:12,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128547425] [2020-12-23 08:15:12,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:12,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:15:12,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426287352] [2020-12-23 08:15:12,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:15:12,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:12,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:15:12,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:12,770 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-12-23 08:15:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:12,871 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-12-23 08:15:12,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:15:12,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-23 08:15:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:12,873 INFO L225 Difference]: With dead ends: 68 [2020-12-23 08:15:12,873 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 08:15:12,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 08:15:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-12-23 08:15:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 08:15:12,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-12-23 08:15:12,881 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2020-12-23 08:15:12,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:12,882 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-12-23 08:15:12,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:15:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-12-23 08:15:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 08:15:12,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:12,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:13,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:13,097 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:13,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1690544526, now seen corresponding path program 2 times [2020-12-23 08:15:13,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:13,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303618562] [2020-12-23 08:15:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:13,112 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:13,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886926405] [2020-12-23 08:15:13,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:13,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:15:13,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:13,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 08:15:13,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:13,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303618562] [2020-12-23 08:15:13,266 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:13,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886926405] [2020-12-23 08:15:13,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:13,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 08:15:13,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59920738] [2020-12-23 08:15:13,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 08:15:13,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:13,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 08:15:13,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:13,270 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 7 states. [2020-12-23 08:15:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:13,423 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-12-23 08:15:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 08:15:13,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-23 08:15:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:13,427 INFO L225 Difference]: With dead ends: 64 [2020-12-23 08:15:13,427 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 08:15:13,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 08:15:13,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-12-23 08:15:13,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 08:15:13,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-12-23 08:15:13,450 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 23 [2020-12-23 08:15:13,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:13,451 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-12-23 08:15:13,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 08:15:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-12-23 08:15:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 08:15:13,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:13,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:13,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 08:15:13,666 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:13,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 1 times [2020-12-23 08:15:13,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:13,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106015545] [2020-12-23 08:15:13,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:13,680 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:13,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167104037] [2020-12-23 08:15:13,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:13,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 08:15:13,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:13,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106015545] [2020-12-23 08:15:13,838 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:13,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167104037] [2020-12-23 08:15:13,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:13,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 08:15:13,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864270782] [2020-12-23 08:15:13,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 08:15:13,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:13,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 08:15:13,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:15:13,841 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 8 states. [2020-12-23 08:15:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:13,999 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-12-23 08:15:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:15:14,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-23 08:15:14,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:14,000 INFO L225 Difference]: With dead ends: 61 [2020-12-23 08:15:14,001 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 08:15:14,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 08:15:14,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 08:15:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-12-23 08:15:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 08:15:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-23 08:15:14,007 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 25 [2020-12-23 08:15:14,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:14,007 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-23 08:15:14,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 08:15:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-23 08:15:14,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 08:15:14,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:14,009 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:14,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:14,223 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:14,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:14,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1559508070, now seen corresponding path program 3 times [2020-12-23 08:15:14,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:14,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103716011] [2020-12-23 08:15:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:14,238 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:14,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60299676] [2020-12-23 08:15:14,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:14,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 08:15:14,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:14,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 08:15:14,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 08:15:14,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103716011] [2020-12-23 08:15:14,413 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:14,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60299676] [2020-12-23 08:15:14,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:14,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:15:14,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983615066] [2020-12-23 08:15:14,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:15:14,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:14,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:15:14,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:14,421 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 6 states. [2020-12-23 08:15:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:14,525 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-23 08:15:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:15:14,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-23 08:15:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:14,529 INFO L225 Difference]: With dead ends: 50 [2020-12-23 08:15:14,529 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 08:15:14,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:15:14,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 08:15:14,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-23 08:15:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 08:15:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-12-23 08:15:14,548 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 28 [2020-12-23 08:15:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:14,549 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-12-23 08:15:14,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:15:14,549 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-12-23 08:15:14,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 08:15:14,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:14,550 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:14,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:14,757 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:14,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:14,758 INFO L82 PathProgramCache]: Analyzing trace with hash 256486781, now seen corresponding path program 3 times [2020-12-23 08:15:14,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:14,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103382238] [2020-12-23 08:15:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:14,770 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:14,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530879976] [2020-12-23 08:15:14,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:14,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 08:15:14,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:14,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 08:15:14,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:28,300 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-23 08:15:40,024 WARN L197 SmtUtils]: Spent 3.38 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-23 08:15:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 08:15:40,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103382238] [2020-12-23 08:15:40,059 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:40,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530879976] [2020-12-23 08:15:40,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:40,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 08:15:40,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919369379] [2020-12-23 08:15:40,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 08:15:40,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:40,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 08:15:40,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=62, Unknown=7, NotChecked=0, Total=90 [2020-12-23 08:15:40,061 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 10 states. [2020-12-23 08:15:48,677 WARN L197 SmtUtils]: Spent 8.59 s on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-23 08:16:19,120 WARN L197 SmtUtils]: Spent 30.43 s on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2020-12-23 08:17:45,346 WARN L197 SmtUtils]: Spent 1.23 m on a formula simplification that was a NOOP. DAG size: 36 [2020-12-23 08:17:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:17:45,432 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-12-23 08:17:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:17:45,433 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-12-23 08:17:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:17:45,433 INFO L225 Difference]: With dead ends: 46 [2020-12-23 08:17:45,434 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 08:17:45,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 144.3s TimeCoverageRelationStatistics Valid=49, Invalid=125, Unknown=8, NotChecked=0, Total=182 [2020-12-23 08:17:45,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 08:17:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 08:17:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 08:17:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 08:17:45,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-12-23 08:17:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:17:45,435 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 08:17:45,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 08:17:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 08:17:45,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 08:17:45,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 08:17:45,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 08:17:56,930 WARN L197 SmtUtils]: Spent 11.14 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-12-23 08:18:09,277 WARN L197 SmtUtils]: Spent 12.34 s on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-12-23 08:18:27,513 WARN L197 SmtUtils]: Spent 18.23 s on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2020-12-23 08:19:08,807 WARN L197 SmtUtils]: Spent 41.29 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-12-23 08:19:36,295 WARN L197 SmtUtils]: Spent 27.49 s on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-12-23 08:19:56,124 WARN L197 SmtUtils]: Spent 19.83 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-12-23 08:19:56,128 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:19:56,128 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:19:56,128 INFO L192 CegarLoopUtils]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-12-23 08:19:56,129 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 08:19:56,129 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:19:56,129 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 08:19:56,129 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 08:19:56,129 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:19:56,129 INFO L189 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:19:56,130 INFO L185 CegarLoopUtils]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) [2020-12-23 08:19:56,130 INFO L189 CegarLoopUtils]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:19:56,130 INFO L189 CegarLoopUtils]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-23 08:19:56,130 INFO L185 CegarLoopUtils]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) [2020-12-23 08:19:56,130 INFO L189 CegarLoopUtils]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:19:56,131 INFO L185 CegarLoopUtils]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) [2020-12-23 08:19:56,131 INFO L189 CegarLoopUtils]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:19:56,131 INFO L185 CegarLoopUtils]: At program point L12-11(lines 11 17) the Hoare annotation is: (or (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~a~0 2) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4)) (= ULTIMATE.start_main_~s~0 9))) [2020-12-23 08:19:56,131 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 08:19:56,132 INFO L189 CegarLoopUtils]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:19:56,132 INFO L185 CegarLoopUtils]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~t~0 2))) (or (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse2 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) .cse1)) (= (+ .cse2 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse2 1)))) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= .cse1 (+ ULTIMATE.start_main_~s~0 1)) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4))))) [2020-12-23 08:19:56,132 INFO L189 CegarLoopUtils]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:19:56,132 INFO L192 CegarLoopUtils]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-23 08:19:56,132 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:19:56,133 INFO L189 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:19:56,133 INFO L189 CegarLoopUtils]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:19:56,133 INFO L189 CegarLoopUtils]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:19:56,133 INFO L189 CegarLoopUtils]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:19:56,133 INFO L189 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-23 08:19:56,133 INFO L189 CegarLoopUtils]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:19:56,133 INFO L189 CegarLoopUtils]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:19:56,133 INFO L185 CegarLoopUtils]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ .cse0 ULTIMATE.start_main_~t~0))) (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1))))) [2020-12-23 08:19:56,134 INFO L189 CegarLoopUtils]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-12-23 08:19:56,134 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:19:56,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:19:56 BoogieIcfgContainer [2020-12-23 08:19:56,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 08:19:56,187 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 08:19:56,187 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 08:19:56,188 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 08:19:56,190 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:10" (3/4) ... [2020-12-23 08:19:56,196 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 08:19:56,212 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 08:19:56,216 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 08:19:56,216 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 08:19:56,216 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 08:19:56,273 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c-witness.graphml [2020-12-23 08:19:56,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 08:19:56,275 INFO L168 Benchmark]: Toolchain (without parser) took 286677.57 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.7 MB in the beginning and 150.7 MB in the end (delta: -25.0 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. [2020-12-23 08:19:56,275 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:19:56,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.89 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 08:19:56,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 08:19:56,282 INFO L168 Benchmark]: Boogie Preprocessor took 23.83 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 113.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:19:56,283 INFO L168 Benchmark]: RCFGBuilder took 429.35 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 98.0 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 08:19:56,284 INFO L168 Benchmark]: TraceAbstraction took 285838.51 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 97.6 MB in the beginning and 153.9 MB in the end (delta: -56.2 MB). Peak memory consumption was 68.3 MB. Max. memory is 8.0 GB. [2020-12-23 08:19:56,284 INFO L168 Benchmark]: Witness Printer took 86.14 ms. Allocated memory is still 181.4 MB. Free memory was 153.9 MB in the beginning and 150.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 08:19:56,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.89 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.83 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 113.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 429.35 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 98.0 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 285838.51 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 97.6 MB in the beginning and 153.9 MB in the end (delta: -56.2 MB). Peak memory consumption was 68.3 MB. Max. memory is 8.0 GB. * Witness Printer took 86.14 ms. Allocated memory is still 181.4 MB. Free memory was 153.9 MB in the beginning and 150.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1) || (((!(0 == cond) && a == 2) && s == t + 4) && s == 9) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && s == a * a + t) || ((a == 0 && t == 1) && s == a * a + a * 2 + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1) || ((!(0 == cond) && t * 2 == s + 1) && s == t + 4) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 155.1s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 126.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 130.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 192 SDtfs, 212 SDslu, 425 SDs, 0 SdLazy, 620 SolverSat, 158 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 144.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 34 NumberOfFragments, 398 HoareAnnotationTreeSize, 8 FomulaSimplifications, 1784 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 226 FormulaSimplificationTreeSizeReductionInter, 130.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 26.0s InterpolantComputationTime, 180 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 24018 SizeOfPredicates, 52 NumberOfNonLiveVariables, 696 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 53/111 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...