/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/cohencu-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:22:30,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:22:30,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:22:30,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:22:30,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:22:30,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:22:30,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:22:30,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:22:30,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:22:30,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:22:30,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:22:30,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:22:30,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:22:30,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:22:30,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:22:30,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:22:30,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:22:30,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:22:30,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:22:30,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:22:30,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:22:30,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:22:30,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:22:30,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:22:30,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 07:22:30,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 07:22:30,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 07:22:30,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 07:22:30,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 07:22:30,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 07:22:30,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:22:30,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:22:30,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:22:30,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:22:30,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:22:30,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:22:30,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:22:30,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:22:30,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:22:30,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:22:30,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:22:30,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:22:30,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:22:30,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:22:30,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:22:30,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:22:30,158 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:22:30,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:22:30,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:22:30,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:22:30,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:22:30,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:22:30,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:22:30,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:22:30,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:22:30,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:22:30,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:22:30,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:22:30,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:22:30,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:22:30,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:22:30,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:22:30,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:22:30,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:22:30,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:22:30,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:22:30,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:22:30,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:22:30,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:22:30,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:22:30,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:22:30,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:22:30,586 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:22:30,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound5.c [2020-12-23 07:22:30,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ffec38a3a/66b753f06b96407399656d5822833d72/FLAGa51ab4868 [2020-12-23 07:22:31,285 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:22:31,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound5.c [2020-12-23 07:22:31,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ffec38a3a/66b753f06b96407399656d5822833d72/FLAGa51ab4868 [2020-12-23 07:22:31,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ffec38a3a/66b753f06b96407399656d5822833d72 [2020-12-23 07:22:31,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:22:31,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:22:31,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:22:31,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:22:31,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:22:31,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:22:31" (1/1) ... [2020-12-23 07:22:31,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0544a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31, skipping insertion in model container [2020-12-23 07:22:31,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:22:31" (1/1) ... [2020-12-23 07:22:31,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:22:31,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:22:31,848 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/cohencu-ll_unwindbound5.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2020-12-23 07:22:31,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:22:31,886 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:22:31,902 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/cohencu-ll_unwindbound5.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2020-12-23 07:22:31,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:22:31,932 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:22:31,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31 WrapperNode [2020-12-23 07:22:31,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:22:31,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:22:31,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:22:31,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:22:31,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31" (1/1) ... [2020-12-23 07:22:31,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31" (1/1) ... [2020-12-23 07:22:31,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:22:31,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:22:31,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:22:31,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:22:31,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31" (1/1) ... [2020-12-23 07:22:31,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31" (1/1) ... [2020-12-23 07:22:32,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31" (1/1) ... [2020-12-23 07:22:32,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31" (1/1) ... [2020-12-23 07:22:32,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31" (1/1) ... [2020-12-23 07:22:32,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31" (1/1) ... [2020-12-23 07:22:32,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31" (1/1) ... [2020-12-23 07:22:32,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:22:32,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:22:32,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:22:32,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:22:32,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:22:32,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:22:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:22:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:22:32,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:22:32,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:22:32,667 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-23 07:22:32,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:22:32 BoogieIcfgContainer [2020-12-23 07:22:32,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:22:32,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:22:32,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:22:32,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:22:32,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:22:31" (1/3) ... [2020-12-23 07:22:32,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d57e89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:22:32, skipping insertion in model container [2020-12-23 07:22:32,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:31" (2/3) ... [2020-12-23 07:22:32,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d57e89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:22:32, skipping insertion in model container [2020-12-23 07:22:32,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:22:32" (3/3) ... [2020-12-23 07:22:32,679 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound5.c [2020-12-23 07:22:32,687 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:22:32,693 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 07:22:32,713 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 07:22:32,742 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:22:32,743 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:22:32,743 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:22:32,743 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:22:32,743 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:22:32,743 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:22:32,743 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:22:32,744 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:22:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-12-23 07:22:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 07:22:32,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:32,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 07:22:32,772 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:32,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:32,779 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-23 07:22:32,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:32,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380509648] [2020-12-23 07:22:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:33,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380509648] [2020-12-23 07:22:33,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:33,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:22:33,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940874015] [2020-12-23 07:22:33,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:22:33,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:33,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:22:33,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:22:33,153 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-12-23 07:22:33,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:33,417 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2020-12-23 07:22:33,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:22:33,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 07:22:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:33,430 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:22:33,430 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 07:22:33,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:22:33,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 07:22:33,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-23 07:22:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 07:22:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-23 07:22:33,478 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2020-12-23 07:22:33,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:33,478 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-23 07:22:33,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:22:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-23 07:22:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:22:33,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:33,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:33,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:22:33,480 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:33,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:33,481 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-23 07:22:33,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:33,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323467823] [2020-12-23 07:22:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:33,503 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:33,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204786436] [2020-12-23 07:22:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:33,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:22:33,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:33,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323467823] [2020-12-23 07:22:33,754 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:33,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204786436] [2020-12-23 07:22:33,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:33,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:22:33,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764422318] [2020-12-23 07:22:33,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:22:33,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:33,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:22:33,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:33,758 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-12-23 07:22:33,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:33,945 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2020-12-23 07:22:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:22:33,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-23 07:22:33,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:33,953 INFO L225 Difference]: With dead ends: 90 [2020-12-23 07:22:33,953 INFO L226 Difference]: Without dead ends: 82 [2020-12-23 07:22:33,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:33,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-23 07:22:33,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2020-12-23 07:22:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:22:33,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-12-23 07:22:33,997 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 8 [2020-12-23 07:22:33,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:33,998 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-12-23 07:22:34,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:22:34,001 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-12-23 07:22:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:22:34,002 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:34,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:34,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:22:34,221 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:34,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:34,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2020-12-23 07:22:34,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:34,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939232788] [2020-12-23 07:22:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:34,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939232788] [2020-12-23 07:22:34,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:34,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:22:34,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497391325] [2020-12-23 07:22:34,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:22:34,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:34,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:22:34,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:22:34,267 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 4 states. [2020-12-23 07:22:34,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:34,290 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2020-12-23 07:22:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:22:34,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 07:22:34,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:34,292 INFO L225 Difference]: With dead ends: 84 [2020-12-23 07:22:34,292 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:22:34,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:22:34,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:22:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-23 07:22:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:22:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-12-23 07:22:34,313 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 9 [2020-12-23 07:22:34,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:34,313 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-12-23 07:22:34,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:22:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-12-23 07:22:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:22:34,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:34,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:34,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:22:34,315 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:34,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:34,316 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-23 07:22:34,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:34,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903984459] [2020-12-23 07:22:34,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:34,331 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:34,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304291113] [2020-12-23 07:22:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:34,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:22:34,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:34,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903984459] [2020-12-23 07:22:34,481 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:34,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304291113] [2020-12-23 07:22:34,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:34,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:22:34,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225073432] [2020-12-23 07:22:34,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:22:34,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:34,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:22:34,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:34,484 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 6 states. [2020-12-23 07:22:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:34,633 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2020-12-23 07:22:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:22:34,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-23 07:22:34,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:34,635 INFO L225 Difference]: With dead ends: 78 [2020-12-23 07:22:34,635 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 07:22:34,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 07:22:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-23 07:22:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:22:34,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-23 07:22:34,648 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 10 [2020-12-23 07:22:34,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:34,648 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-23 07:22:34,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:22:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-23 07:22:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:22:34,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:34,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:34,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:34,863 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:34,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:34,865 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2020-12-23 07:22:34,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:34,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949106990] [2020-12-23 07:22:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:34,882 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:34,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403279095] [2020-12-23 07:22:34,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:34,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:22:34,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:35,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949106990] [2020-12-23 07:22:35,016 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:35,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403279095] [2020-12-23 07:22:35,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:35,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:22:35,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564602300] [2020-12-23 07:22:35,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:22:35,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:35,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:22:35,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:35,022 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-12-23 07:22:35,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:35,165 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2020-12-23 07:22:35,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:22:35,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 07:22:35,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:35,167 INFO L225 Difference]: With dead ends: 77 [2020-12-23 07:22:35,167 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:22:35,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:35,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:22:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-12-23 07:22:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 07:22:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-12-23 07:22:35,176 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2020-12-23 07:22:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:35,177 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-12-23 07:22:35,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:22:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-12-23 07:22:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:22:35,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:35,178 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:35,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:35,394 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:35,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2020-12-23 07:22:35,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:35,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753504315] [2020-12-23 07:22:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:35,410 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:35,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864820749] [2020-12-23 07:22:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:35,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:22:35,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:35,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753504315] [2020-12-23 07:22:35,571 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:35,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864820749] [2020-12-23 07:22:35,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:35,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:22:35,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178804281] [2020-12-23 07:22:35,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:22:35,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:35,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:22:35,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:35,574 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 7 states. [2020-12-23 07:22:35,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:35,785 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-12-23 07:22:35,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:22:35,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-23 07:22:35,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:35,787 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:22:35,787 INFO L226 Difference]: Without dead ends: 95 [2020-12-23 07:22:35,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:22:35,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-23 07:22:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2020-12-23 07:22:35,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 07:22:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-12-23 07:22:35,800 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 20 [2020-12-23 07:22:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:35,801 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-12-23 07:22:35,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:22:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-12-23 07:22:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 07:22:35,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:35,802 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:36,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:36,017 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:36,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:36,019 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2020-12-23 07:22:36,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:36,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485693483] [2020-12-23 07:22:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:36,035 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:36,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198036817] [2020-12-23 07:22:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:36,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:22:36,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:36,163 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 07:22:36,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485693483] [2020-12-23 07:22:36,164 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:36,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198036817] [2020-12-23 07:22:36,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:36,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:22:36,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351390550] [2020-12-23 07:22:36,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:22:36,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:36,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:22:36,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:22:36,167 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 5 states. [2020-12-23 07:22:36,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:36,199 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2020-12-23 07:22:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:22:36,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-23 07:22:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:36,200 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:22:36,200 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 07:22:36,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 07:22:36,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-23 07:22:36,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 07:22:36,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-12-23 07:22:36,212 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 21 [2020-12-23 07:22:36,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:36,212 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-12-23 07:22:36,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:22:36,213 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-12-23 07:22:36,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:22:36,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:36,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:36,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:22:36,428 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:36,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:36,429 INFO L82 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2020-12-23 07:22:36,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:36,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630395755] [2020-12-23 07:22:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:36,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:36,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943972026] [2020-12-23 07:22:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:36,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:22:36,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:36,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630395755] [2020-12-23 07:22:36,607 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:36,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943972026] [2020-12-23 07:22:36,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:36,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:22:36,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700846749] [2020-12-23 07:22:36,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:22:36,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:36,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:22:36,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:36,610 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 7 states. [2020-12-23 07:22:36,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:36,796 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2020-12-23 07:22:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:22:36,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-23 07:22:36,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:36,797 INFO L225 Difference]: With dead ends: 92 [2020-12-23 07:22:36,797 INFO L226 Difference]: Without dead ends: 82 [2020-12-23 07:22:36,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 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 07:22:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-23 07:22:36,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2020-12-23 07:22:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 07:22:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-12-23 07:22:36,807 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 22 [2020-12-23 07:22:36,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:36,807 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-12-23 07:22:36,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:22:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-12-23 07:22:36,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:22:36,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:36,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:37,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:37,023 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:37,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:37,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2020-12-23 07:22:37,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:37,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966872996] [2020-12-23 07:22:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:37,042 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:37,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550149910] [2020-12-23 07:22:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:37,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:22:37,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:37,411 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:22:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:37,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966872996] [2020-12-23 07:22:37,442 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:37,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550149910] [2020-12-23 07:22:37,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:37,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:22:37,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168598186] [2020-12-23 07:22:37,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:22:37,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:37,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:22:37,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:22:37,444 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 8 states. [2020-12-23 07:22:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:37,807 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-12-23 07:22:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:22:37,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:22:37,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:37,808 INFO L225 Difference]: With dead ends: 82 [2020-12-23 07:22:37,809 INFO L226 Difference]: Without dead ends: 80 [2020-12-23 07:22:37,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:22:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-23 07:22:37,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-12-23 07:22:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 07:22:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-12-23 07:22:37,819 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 31 [2020-12-23 07:22:37,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:37,819 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-12-23 07:22:37,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:22:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-12-23 07:22:37,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:22:37,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:37,821 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 07:22:38,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:38,036 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:38,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:38,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1324326621, now seen corresponding path program 2 times [2020-12-23 07:22:38,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:38,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054699098] [2020-12-23 07:22:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:38,050 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:38,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393855893] [2020-12-23 07:22:38,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:38,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:22:38,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:22:38,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:22:38,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:38,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054699098] [2020-12-23 07:22:38,280 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:38,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393855893] [2020-12-23 07:22:38,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:38,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:22:38,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640770504] [2020-12-23 07:22:38,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:22:38,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:38,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:22:38,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:38,283 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 7 states. [2020-12-23 07:22:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:38,486 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2020-12-23 07:22:38,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:22:38,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-23 07:22:38,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:38,490 INFO L225 Difference]: With dead ends: 123 [2020-12-23 07:22:38,490 INFO L226 Difference]: Without dead ends: 121 [2020-12-23 07:22:38,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:22:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-23 07:22:38,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 81. [2020-12-23 07:22:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:22:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-12-23 07:22:38,513 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 32 [2020-12-23 07:22:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:38,514 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-12-23 07:22:38,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:22:38,514 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-12-23 07:22:38,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:22:38,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:38,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:38,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:22:38,738 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:38,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2020-12-23 07:22:38,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:38,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374701384] [2020-12-23 07:22:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:38,753 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:38,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371089104] [2020-12-23 07:22:38,754 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:38,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:22:38,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:38,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:22:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:38,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374701384] [2020-12-23 07:22:38,974 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:38,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371089104] [2020-12-23 07:22:38,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:38,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:22:38,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841660773] [2020-12-23 07:22:38,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:22:38,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:38,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:22:38,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:22:38,977 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 8 states. [2020-12-23 07:22:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:39,217 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-12-23 07:22:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:22:39,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-23 07:22:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:39,219 INFO L225 Difference]: With dead ends: 86 [2020-12-23 07:22:39,219 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 07:22:39,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:22:39,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 07:22:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-12-23 07:22:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:22:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-12-23 07:22:39,228 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 33 [2020-12-23 07:22:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:39,229 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-12-23 07:22:39,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:22:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-12-23 07:22:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:22:39,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:39,230 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:39,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:39,445 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:39,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:39,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2020-12-23 07:22:39,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:39,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909035595] [2020-12-23 07:22:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:39,456 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:39,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228275702] [2020-12-23 07:22:39,457 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:39,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:22:39,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:22:39,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:22:39,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:39,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909035595] [2020-12-23 07:22:39,590 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:39,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228275702] [2020-12-23 07:22:39,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:39,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:22:39,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857240652] [2020-12-23 07:22:39,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:22:39,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:39,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:22:39,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:39,597 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 6 states. [2020-12-23 07:22:39,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:39,639 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-12-23 07:22:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:22:39,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-12-23 07:22:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:39,643 INFO L225 Difference]: With dead ends: 105 [2020-12-23 07:22:39,643 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 07:22:39,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:22:39,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 07:22:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-12-23 07:22:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:22:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-12-23 07:22:39,652 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 33 [2020-12-23 07:22:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:39,652 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-12-23 07:22:39,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:22:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-12-23 07:22:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:22:39,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:39,656 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 07:22:39,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:39,870 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:39,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:39,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1367719072, now seen corresponding path program 2 times [2020-12-23 07:22:39,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:39,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228301068] [2020-12-23 07:22:39,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:39,883 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:39,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313896242] [2020-12-23 07:22:39,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:39,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:22:39,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:22:39,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:22:39,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:40,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228301068] [2020-12-23 07:22:40,141 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:40,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313896242] [2020-12-23 07:22:40,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:40,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:22:40,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331529133] [2020-12-23 07:22:40,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:22:40,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:40,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:22:40,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:22:40,145 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 9 states. [2020-12-23 07:22:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:40,429 INFO L93 Difference]: Finished difference Result 118 states and 119 transitions. [2020-12-23 07:22:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:22:40,430 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-23 07:22:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:40,432 INFO L225 Difference]: With dead ends: 118 [2020-12-23 07:22:40,432 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 07:22:40,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:22:40,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 07:22:40,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 75. [2020-12-23 07:22:40,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:22:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-12-23 07:22:40,442 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 34 [2020-12-23 07:22:40,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:40,443 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-12-23 07:22:40,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:22:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-12-23 07:22:40,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:22:40,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:40,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 07:22:40,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:22:40,661 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:40,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:40,661 INFO L82 PathProgramCache]: Analyzing trace with hash 118191875, now seen corresponding path program 1 times [2020-12-23 07:22:40,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:40,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577350410] [2020-12-23 07:22:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:40,682 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:40,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596389140] [2020-12-23 07:22:40,683 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:40,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:22:40,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:40,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577350410] [2020-12-23 07:22:40,899 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:40,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596389140] [2020-12-23 07:22:40,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:40,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:22:40,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218761437] [2020-12-23 07:22:40,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:22:40,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:40,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:22:40,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:40,902 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 7 states. [2020-12-23 07:22:41,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:41,107 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2020-12-23 07:22:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:22:41,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-12-23 07:22:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:41,108 INFO L225 Difference]: With dead ends: 109 [2020-12-23 07:22:41,108 INFO L226 Difference]: Without dead ends: 93 [2020-12-23 07:22:41,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:22:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-23 07:22:41,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-12-23 07:22:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 07:22:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2020-12-23 07:22:41,117 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 36 [2020-12-23 07:22:41,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:41,118 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2020-12-23 07:22:41,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:22:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2020-12-23 07:22:41,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 07:22:41,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:41,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:41,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:22:41,333 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:41,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:41,334 INFO L82 PathProgramCache]: Analyzing trace with hash -230259065, now seen corresponding path program 2 times [2020-12-23 07:22:41,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:41,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703351068] [2020-12-23 07:22:41,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:41,353 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:41,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525642023] [2020-12-23 07:22:41,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:41,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:22:41,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:22:41,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:22:41,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:41,620 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:22:41,773 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:22:41,776 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:22:41,781 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:22:41,785 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:22:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:41,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703351068] [2020-12-23 07:22:41,813 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:41,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525642023] [2020-12-23 07:22:41,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:41,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:22:41,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930892717] [2020-12-23 07:22:41,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:22:41,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:41,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:22:41,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:22:41,815 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 11 states. [2020-12-23 07:22:42,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:42,337 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2020-12-23 07:22:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:22:42,338 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-12-23 07:22:42,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:42,339 INFO L225 Difference]: With dead ends: 90 [2020-12-23 07:22:42,339 INFO L226 Difference]: Without dead ends: 88 [2020-12-23 07:22:42,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:22:42,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-23 07:22:42,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-12-23 07:22:42,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 07:22:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-12-23 07:22:42,348 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 43 [2020-12-23 07:22:42,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:42,349 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-12-23 07:22:42,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:22:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-12-23 07:22:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:22:42,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:42,350 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-12-23 07:22:42,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:22:42,563 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:42,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:42,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1212527061, now seen corresponding path program 3 times [2020-12-23 07:22:42,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:42,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78812445] [2020-12-23 07:22:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:42,576 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:42,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358817188] [2020-12-23 07:22:42,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:42,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:22:42,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:22:42,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:22:42,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:46,755 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 3 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)))) (and (= (+ (* 6 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (* 8 c_ULTIMATE.start_main_~y~0) .cse0 (* 18 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0))) (+ (* 6 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~n~0)) (* 12 c_ULTIMATE.start_main_~n~0) (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (* 9 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) 7)) (let ((.cse1 (= c_ULTIMATE.start_main_~y~0 (+ (* 3 c_ULTIMATE.start_main_~n~0) .cse0 1)))) (or (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse1) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)))))) is different from false [2020-12-23 07:23:05,872 WARN L197 SmtUtils]: Spent 12.28 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-23 07:23:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 07:23:05,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78812445] [2020-12-23 07:23:05,936 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:23:05,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358817188] [2020-12-23 07:23:05,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:23:05,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:23:05,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59814321] [2020-12-23 07:23:05,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:23:05,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:23:05,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:23:05,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=4, NotChecked=14, Total=90 [2020-12-23 07:23:05,938 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 10 states. [2020-12-23 07:23:18,347 WARN L197 SmtUtils]: Spent 12.37 s on a formula simplification that was a NOOP. DAG size: 41 [2020-12-23 07:23:37,306 WARN L197 SmtUtils]: Spent 18.93 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-23 07:24:46,673 WARN L197 SmtUtils]: Spent 1.05 m on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-12-23 07:24:57,190 WARN L197 SmtUtils]: Spent 9.26 s on a formula simplification that was a NOOP. DAG size: 45 [2020-12-23 07:25:03,757 WARN L197 SmtUtils]: Spent 6.51 s on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-23 07:25:10,696 WARN L197 SmtUtils]: Spent 4.14 s on a formula simplification that was a NOOP. DAG size: 37 [2020-12-23 07:25:11,027 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-12-23 07:25:32,332 WARN L197 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2020-12-23 07:25:44,709 WARN L197 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-23 07:26:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:08,950 INFO L93 Difference]: Finished difference Result 108 states and 109 transitions. [2020-12-23 07:26:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:26:08,950 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-12-23 07:26:08,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:08,951 INFO L225 Difference]: With dead ends: 108 [2020-12-23 07:26:08,951 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 07:26:08,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 167.9s TimeCoverageRelationStatistics Valid=97, Invalid=234, Unknown=15, NotChecked=34, Total=380 [2020-12-23 07:26:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 07:26:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2020-12-23 07:26:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:26:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2020-12-23 07:26:08,968 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 44 [2020-12-23 07:26:08,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:08,968 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2020-12-23 07:26:08,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:26:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-12-23 07:26:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:26:08,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:08,969 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:09,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:09,173 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:26:09,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:09,173 INFO L82 PathProgramCache]: Analyzing trace with hash 2059495850, now seen corresponding path program 2 times [2020-12-23 07:26:09,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:09,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859819496] [2020-12-23 07:26:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:09,183 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:09,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471716471] [2020-12-23 07:26:09,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true