/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_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:26:11,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:26:11,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:26:11,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:26:11,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:26:11,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:26:11,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:26:11,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:26:11,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:26:11,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:26:11,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:26:11,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:26:11,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:26:11,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:26:11,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:26:11,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:26:11,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:26:11,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:26:11,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:26:11,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:26:11,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:26:11,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:26:11,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:26:11,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:26:11,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:26:11,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:26:11,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:26:11,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:26:11,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:26:11,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:26:11,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:26:11,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:26:11,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:26:11,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:26:11,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:26:11,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:26:11,174 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 07:26:11,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:26:11,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:26:11,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:26:11,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:26:11,228 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:26:11,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:26:11,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:26:11,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:26:11,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:26:11,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:26:11,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:26:11,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:26:11,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:26:11,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:26:11,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:26:11,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:26:11,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:26:11,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:26:11,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:26:11,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:26:11,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:26:11,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:26:11,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:26:11,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:26:11,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:26:11,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:26:11,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:26:11,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:26:11,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:26:11,636 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:26:11,637 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:26:11,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c [2020-12-23 07:26:11,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/331945cd6/d0036b152cb0445dbffba4e7af1114c6/FLAG3011bd0f3 [2020-12-23 07:26:12,339 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:26:12,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c [2020-12-23 07:26:12,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/331945cd6/d0036b152cb0445dbffba4e7af1114c6/FLAG3011bd0f3 [2020-12-23 07:26:12,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/331945cd6/d0036b152cb0445dbffba4e7af1114c6 [2020-12-23 07:26:12,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:26:12,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:26:12,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:26:12,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:26:12,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:26:12,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:26:12" (1/1) ... [2020-12-23 07:26:12,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b318de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12, skipping insertion in model container [2020-12-23 07:26:12,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:26:12" (1/1) ... [2020-12-23 07:26:12,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:26:12,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:26:12,884 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_valuebound50.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 07:26:12,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:26:12,919 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:26:12,937 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_valuebound50.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 07:26:12,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:26:12,998 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:26:12,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12 WrapperNode [2020-12-23 07:26:12,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:26:13,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:26:13,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:26:13,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:26:13,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12" (1/1) ... [2020-12-23 07:26:13,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12" (1/1) ... [2020-12-23 07:26:13,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:26:13,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:26:13,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:26:13,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:26:13,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12" (1/1) ... [2020-12-23 07:26:13,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12" (1/1) ... [2020-12-23 07:26:13,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12" (1/1) ... [2020-12-23 07:26:13,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12" (1/1) ... [2020-12-23 07:26:13,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12" (1/1) ... [2020-12-23 07:26:13,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12" (1/1) ... [2020-12-23 07:26:13,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12" (1/1) ... [2020-12-23 07:26:13,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:26:13,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:26:13,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:26:13,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:26:13,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12" (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 07:26:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:26:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:26:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:26:13,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:26:13,768 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:26:13,769 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-23 07:26:13,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:26:13 BoogieIcfgContainer [2020-12-23 07:26:13,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:26:13,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:26:13,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:26:13,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:26:13,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:26:12" (1/3) ... [2020-12-23 07:26:13,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c681a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:26:13, skipping insertion in model container [2020-12-23 07:26:13,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:12" (2/3) ... [2020-12-23 07:26:13,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c681a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:26:13, skipping insertion in model container [2020-12-23 07:26:13,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:26:13" (3/3) ... [2020-12-23 07:26:13,780 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound50.c [2020-12-23 07:26:13,786 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:26:13,791 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 07:26:13,809 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 07:26:13,835 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:26:13,835 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:26:13,835 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:26:13,835 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:26:13,836 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:26:13,836 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:26:13,836 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:26:13,836 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:26:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-23 07:26:13,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:26:13,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:13,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:13,862 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 07:26:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:13,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-23 07:26:13,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:13,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200098857] [2020-12-23 07:26:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:14,034 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 07:26:14,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200098857] [2020-12-23 07:26:14,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:26:14,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:26:14,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174726075] [2020-12-23 07:26:14,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:26:14,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:14,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:26:14,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:26:14,058 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-23 07:26:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:14,081 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2020-12-23 07:26:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:26:14,082 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 07:26:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:14,092 INFO L225 Difference]: With dead ends: 103 [2020-12-23 07:26:14,092 INFO L226 Difference]: Without dead ends: 49 [2020-12-23 07:26:14,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:26:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-23 07:26:14,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-23 07:26:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:26:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-12-23 07:26:14,134 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2020-12-23 07:26:14,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:14,135 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-12-23 07:26:14,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:26:14,135 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-12-23 07:26:14,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:26:14,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:14,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:14,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:26:14,136 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 07:26:14,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:14,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-23 07:26:14,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:14,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544935529] [2020-12-23 07:26:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:14,256 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 07:26:14,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544935529] [2020-12-23 07:26:14,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:26:14,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:26:14,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488733164] [2020-12-23 07:26:14,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:26:14,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:14,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:26:14,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:26:14,261 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 4 states. [2020-12-23 07:26:14,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:14,446 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-23 07:26:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:26:14,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 07:26:14,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:14,448 INFO L225 Difference]: With dead ends: 50 [2020-12-23 07:26:14,449 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 07:26:14,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:26:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 07:26:14,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-12-23 07:26:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 07:26:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-12-23 07:26:14,459 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2020-12-23 07:26:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:14,460 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-12-23 07:26:14,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:26:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-12-23 07:26:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:26:14,460 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:14,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:14,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:26:14,461 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 07:26:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:14,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-23 07:26:14,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:14,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379834387] [2020-12-23 07:26:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:14,485 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:14,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058841826] [2020-12-23 07:26:14,486 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 07:26:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:14,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:26:14,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:14,712 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 07:26:14,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379834387] [2020-12-23 07:26:14,713 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:14,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058841826] [2020-12-23 07:26:14,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:26:14,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:26:14,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446730100] [2020-12-23 07:26:14,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:26:14,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:14,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:26:14,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:26:14,717 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 6 states. [2020-12-23 07:26:15,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:15,317 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-12-23 07:26:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:26:15,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-23 07:26:15,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:15,320 INFO L225 Difference]: With dead ends: 87 [2020-12-23 07:26:15,320 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:26:15,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:26:15,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:26:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-12-23 07:26:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:26:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-12-23 07:26:15,335 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 9 [2020-12-23 07:26:15,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:15,336 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-12-23 07:26:15,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:26:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-12-23 07:26:15,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:26:15,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:15,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:15,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 07:26:15,552 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 07:26:15,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:15,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-23 07:26:15,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:15,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725647098] [2020-12-23 07:26:15,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:15,570 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:15,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453197899] [2020-12-23 07:26:15,571 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 07:26:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:15,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:26:15,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:15,767 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 07:26:15,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725647098] [2020-12-23 07:26:15,768 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:15,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453197899] [2020-12-23 07:26:15,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:26:15,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:26:15,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140099247] [2020-12-23 07:26:15,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:26:15,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:15,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:26:15,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:26:15,771 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 6 states. [2020-12-23 07:26:15,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:15,948 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-12-23 07:26:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:26:15,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 07:26:15,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:15,950 INFO L225 Difference]: With dead ends: 78 [2020-12-23 07:26:15,950 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 07:26:15,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:26:15,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 07:26:15,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-23 07:26:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:26:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-12-23 07:26:15,961 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 11 [2020-12-23 07:26:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:15,962 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-12-23 07:26:15,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:26:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-12-23 07:26:15,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:26:15,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:15,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:16,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:16,178 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 07:26:16,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:16,180 INFO L82 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2020-12-23 07:26:16,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:16,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844167387] [2020-12-23 07:26:16,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:16,195 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:16,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788425785] [2020-12-23 07:26:16,196 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 07:26:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:16,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:26:16,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:16,322 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 07:26:16,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844167387] [2020-12-23 07:26:16,322 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:16,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788425785] [2020-12-23 07:26:16,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:26:16,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:26:16,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766629678] [2020-12-23 07:26:16,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:26:16,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:16,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:26:16,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:26:16,325 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 6 states. [2020-12-23 07:26:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:16,487 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-12-23 07:26:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:26:16,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-23 07:26:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:16,489 INFO L225 Difference]: With dead ends: 75 [2020-12-23 07:26:16,489 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 07:26:16,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 07:26:16,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 07:26:16,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-12-23 07:26:16,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 07:26:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-12-23 07:26:16,497 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2020-12-23 07:26:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:16,498 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-12-23 07:26:16,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:26:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-12-23 07:26:16,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:26:16,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:16,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:16,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:16,713 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 07:26:16,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2020-12-23 07:26:16,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:16,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959372089] [2020-12-23 07:26:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:16,730 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:16,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898534127] [2020-12-23 07:26:16,730 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 07:26:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:16,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:26:16,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:26:16,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959372089] [2020-12-23 07:26:16,879 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:16,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898534127] [2020-12-23 07:26:16,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:16,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:26:16,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413460487] [2020-12-23 07:26:16,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:26:16,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:16,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:26:16,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:26:16,882 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 7 states. [2020-12-23 07:26:17,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:17,143 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2020-12-23 07:26:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:26:17,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-23 07:26:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:17,145 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:26:17,145 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 07:26:17,146 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 07:26:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 07:26:17,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2020-12-23 07:26:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-23 07:26:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-12-23 07:26:17,170 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 20 [2020-12-23 07:26:17,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:17,170 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-12-23 07:26:17,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:26:17,171 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-12-23 07:26:17,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:26:17,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:17,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:17,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:17,378 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 07:26:17,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:17,380 INFO L82 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2020-12-23 07:26:17,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:17,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497357920] [2020-12-23 07:26:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:17,394 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:17,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300085541] [2020-12-23 07:26:17,395 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 07:26:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:17,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:26:17,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:26:17,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497357920] [2020-12-23 07:26:17,532 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:17,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300085541] [2020-12-23 07:26:17,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:17,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:26:17,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046989686] [2020-12-23 07:26:17,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:26:17,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:17,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:26:17,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:26:17,534 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2020-12-23 07:26:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:17,750 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-12-23 07:26:17,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:26:17,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-23 07:26:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:17,752 INFO L225 Difference]: With dead ends: 91 [2020-12-23 07:26:17,752 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 07:26:17,752 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 07:26:17,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 07:26:17,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-12-23 07:26:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:26:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-12-23 07:26:17,761 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 22 [2020-12-23 07:26:17,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:17,761 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-12-23 07:26:17,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:26:17,762 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-12-23 07:26:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:26:17,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:17,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:17,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:26:17,977 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 07:26:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:17,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2020-12-23 07:26:17,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:17,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395444701] [2020-12-23 07:26:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:17,993 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:17,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843564604] [2020-12-23 07:26:17,993 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 07:26:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:18,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:26:18,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:18,191 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:26:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:26:18,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395444701] [2020-12-23 07:26:18,211 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:18,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843564604] [2020-12-23 07:26:18,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:18,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:26:18,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467043934] [2020-12-23 07:26:18,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:26:18,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:18,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:26:18,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:26:18,213 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 8 states. [2020-12-23 07:26:18,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:18,624 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-12-23 07:26:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:26:18,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:26:18,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:18,626 INFO L225 Difference]: With dead ends: 81 [2020-12-23 07:26:18,626 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:26:18,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:26:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:26:18,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-12-23 07:26:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:26:18,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-12-23 07:26:18,636 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 31 [2020-12-23 07:26:18,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:18,637 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-12-23 07:26:18,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:26:18,637 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-12-23 07:26:18,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:26:18,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:18,638 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:18,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:18,853 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 07:26:18,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:18,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1811048370, now seen corresponding path program 2 times [2020-12-23 07:26:18,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:18,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013534372] [2020-12-23 07:26:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:18,868 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:18,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758698203] [2020-12-23 07:26:18,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:18,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:26:18,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:26:18,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:26:18,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:26:19,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013534372] [2020-12-23 07:26:19,050 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:19,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758698203] [2020-12-23 07:26:19,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:19,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:26:19,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575621439] [2020-12-23 07:26:19,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:26:19,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:19,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:26:19,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:26:19,052 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 8 states. [2020-12-23 07:26:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:19,305 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2020-12-23 07:26:19,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:26:19,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:26:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:19,307 INFO L225 Difference]: With dead ends: 121 [2020-12-23 07:26:19,307 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 07:26:19,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:26:19,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 07:26:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-12-23 07:26:19,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:26:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-12-23 07:26:19,319 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 31 [2020-12-23 07:26:19,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:19,320 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-12-23 07:26:19,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:26:19,320 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-12-23 07:26:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:26:19,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:19,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:19,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:19,535 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 07:26:19,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:19,536 INFO L82 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2020-12-23 07:26:19,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:19,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975576524] [2020-12-23 07:26:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:19,551 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:19,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480163789] [2020-12-23 07:26:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:19,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:26:19,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:19,763 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:26:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:26:19,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975576524] [2020-12-23 07:26:19,785 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:19,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480163789] [2020-12-23 07:26:19,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:19,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:26:19,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040845996] [2020-12-23 07:26:19,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:26:19,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:19,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:26:19,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:26:19,789 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 8 states. [2020-12-23 07:26:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:20,173 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2020-12-23 07:26:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:26:20,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-23 07:26:20,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:20,174 INFO L225 Difference]: With dead ends: 100 [2020-12-23 07:26:20,174 INFO L226 Difference]: Without dead ends: 98 [2020-12-23 07:26:20,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:26:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-23 07:26:20,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-12-23 07:26:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:26:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-12-23 07:26:20,185 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 33 [2020-12-23 07:26:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:20,186 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-12-23 07:26:20,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:26:20,186 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-12-23 07:26:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:26:20,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:20,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:20,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:26:20,402 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 07:26:20,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:20,403 INFO L82 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2020-12-23 07:26:20,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:20,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906350835] [2020-12-23 07:26:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:20,415 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:20,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143483219] [2020-12-23 07:26:20,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:20,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:26:20,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:26:20,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 07:26:20,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:26:20,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906350835] [2020-12-23 07:26:20,671 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:20,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143483219] [2020-12-23 07:26:20,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:20,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:26:20,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002405368] [2020-12-23 07:26:20,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:26:20,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:20,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:26:20,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:26:20,673 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 10 states. [2020-12-23 07:26:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:20,932 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-12-23 07:26:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:26:20,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-23 07:26:20,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:20,934 INFO L225 Difference]: With dead ends: 111 [2020-12-23 07:26:20,934 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 07:26:20,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:26:20,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 07:26:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2020-12-23 07:26:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 07:26:20,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-12-23 07:26:20,944 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 33 [2020-12-23 07:26:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:20,944 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-12-23 07:26:20,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:26:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-12-23 07:26:20,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 07:26:20,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:20,945 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:21,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:21,161 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 07:26:21,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:21,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2020-12-23 07:26:21,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:21,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305071560] [2020-12-23 07:26:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:21,174 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:21,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598316530] [2020-12-23 07:26:21,175 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 07:26:21,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:26:21,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:26:21,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-23 07:26:21,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:21,488 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:26:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:26:21,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305071560] [2020-12-23 07:26:21,512 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:21,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598316530] [2020-12-23 07:26:21,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:21,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:26:21,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124944994] [2020-12-23 07:26:21,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:26:21,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:21,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:26:21,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:26:21,514 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 10 states. [2020-12-23 07:26:24,101 WARN L197 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2020-12-23 07:26:26,796 WARN L197 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2020-12-23 07:26:26,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:26,961 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2020-12-23 07:26:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:26:26,961 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-12-23 07:26:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:26,962 INFO L225 Difference]: With dead ends: 89 [2020-12-23 07:26:26,962 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:26:26,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:26:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:26:26,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-12-23 07:26:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 07:26:26,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2020-12-23 07:26:26,970 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 42 [2020-12-23 07:26:26,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:26,971 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2020-12-23 07:26:26,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:26:26,971 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2020-12-23 07:26:26,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 07:26:26,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:26,972 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:27,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:27,185 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 07:26:27,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:27,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1748370537, now seen corresponding path program 3 times [2020-12-23 07:26:27,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:27,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524422339] [2020-12-23 07:26:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:27,203 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:27,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246396490] [2020-12-23 07:26:27,204 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 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 07:26:27,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:26:27,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:26:27,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:26:27,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:29,583 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 07:26:40,856 WARN L197 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-23 07:26:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-23 07:26:40,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524422339] [2020-12-23 07:26:40,955 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:40,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246396490] [2020-12-23 07:26:40,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:40,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:26:40,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518099772] [2020-12-23 07:26:40,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:26:40,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:40,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:26:40,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=67, Unknown=5, NotChecked=16, Total=110 [2020-12-23 07:26:40,957 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 11 states. [2020-12-23 07:26:48,359 WARN L197 SmtUtils]: Spent 7.35 s on a formula simplification that was a NOOP. DAG size: 46 [2020-12-23 07:26:50,411 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (* 3 c_ULTIMATE.start_main_~n~0)) (.cse0 (* 3 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)))) (let ((.cse3 (= c_ULTIMATE.start_main_~y~0 (+ .cse2 .cse0 1))) (.cse1 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= (+ (* 12 c_ULTIMATE.start_main_~y~0) (* 6 c_ULTIMATE.start_main_~z~0)) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) 12)))) (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)) .cse1 (= (+ .cse0 c_ULTIMATE.start_main_~z~0) (+ c_ULTIMATE.start_main_~y~0 .cse2 5)) (or (= c_ULTIMATE.start_assume_abort_if_not_~cond 0) (= c_ULTIMATE.start_assume_abort_if_not_~cond 1)) (or (and .cse1 .cse3) (and .cse4 (not .cse3))) .cse5 .cse3 (or (and .cse1 .cse5) (and .cse4 (not .cse5)))))) is different from true [2020-12-23 07:26:56,775 WARN L197 SmtUtils]: Spent 6.19 s on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-12-23 07:27:04,526 WARN L197 SmtUtils]: Spent 4.41 s on a formula simplification that was a NOOP. DAG size: 45 [2020-12-23 07:27:11,412 WARN L197 SmtUtils]: Spent 4.81 s on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-23 07:27:21,734 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* 3 c_ULTIMATE.start_main_~n~0)) (.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)) (= (+ .cse0 c_ULTIMATE.start_main_~z~0) (+ c_ULTIMATE.start_main_~y~0 .cse1 5)) (let ((.cse2 (= c_ULTIMATE.start_main_~y~0 (+ .cse1 .cse0 1)))) (or (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse2) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse2)))) (= (+ (* 12 c_ULTIMATE.start_main_~y~0) (* 6 c_ULTIMATE.start_main_~z~0)) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) 12)))) is different from false [2020-12-23 07:27:26,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:27:26,054 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-12-23 07:27:26,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:27:26,055 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-12-23 07:27:26,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:27:26,056 INFO L225 Difference]: With dead ends: 78 [2020-12-23 07:27:26,056 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 07:27:26,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 47.9s TimeCoverageRelationStatistics Valid=58, Invalid=154, Unknown=10, NotChecked=84, Total=306 [2020-12-23 07:27:26,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 07:27:26,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-23 07:27:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 07:27:26,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2020-12-23 07:27:26,069 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 42 [2020-12-23 07:27:26,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:27:26,070 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2020-12-23 07:27:26,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:27:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2020-12-23 07:27:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:27:26,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:27:26,071 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 07:27:26,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:27:26,274 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 07:27:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:27:26,275 INFO L82 PathProgramCache]: Analyzing trace with hash -851717222, now seen corresponding path program 3 times [2020-12-23 07:27:26,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:27:26,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499486844] [2020-12-23 07:27:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:27:26,287 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:27:26,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956480518] [2020-12-23 07:27:26,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:27:26,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:27:26,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:27:26,430 WARN L261 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-23 07:27:26,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:27:26,447 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:27:26,847 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 07:27:27,239 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-12-23 07:27:53,168 WARN L197 SmtUtils]: Spent 15.76 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-23 07:28:03,492 WARN L197 SmtUtils]: Spent 4.15 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-23 07:28:05,508 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (.cse0 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0))) (and (= (+ c_ULTIMATE.start_main_~y~0 (* 3 c_ULTIMATE.start_main_~n~0) .cse0 5) (+ c_ULTIMATE.start_main_~x~0 (* 3 .cse1) c_ULTIMATE.start_main_~z~0)) (= c_ULTIMATE.start_main_~x~0 .cse0) (= (+ (* 12 c_ULTIMATE.start_main_~x~0) (* 36 .cse1) (* 18 c_ULTIMATE.start_main_~z~0)) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) (* 36 c_ULTIMATE.start_main_~n~0) (* 12 .cse0) 72)) (= (+ (* 3 (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) (* 3 c_ULTIMATE.start_main_~z~0)) (+ (* 18 c_ULTIMATE.start_main_~x~0) (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0) (* 3 (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~n~0)) 18)))) is different from false