/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/dijkstra-u_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:29:43,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:29:43,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:29:43,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:29:43,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:29:43,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:29:43,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:29:43,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:29:43,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:29:43,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:29:43,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:29:43,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:29:43,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:29:43,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:29:43,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:29:43,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:29:43,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:29:43,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:29:43,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:29:43,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:29:43,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:29:43,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:29:43,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:29:43,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:29:43,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 07:29:43,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 07:29:43,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 07:29:43,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 07:29:43,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 07:29:43,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 07:29:43,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:29:43,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:29:43,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:29:43,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:29:43,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:29:43,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:29:43,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:29:43,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:29:43,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:29:43,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:29:43,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:29:43,323 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 07:29:43,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:29:43,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:29:43,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:29:43,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:29:43,373 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:29:43,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:29:43,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:29:43,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:29:43,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:29:43,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:29:43,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:29:43,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:29:43,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:29:43,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:29:43,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:29:43,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:29:43,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:29:43,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:29:43,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:29:43,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:29:43,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:29:43,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:29:43,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:29:43,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:29:43,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:29:43,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:29:43,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:29:43,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:29:43,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:29:43,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:29:43,825 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:29:43,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2020-12-23 07:29:43,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3ebbac0b2/1d12d94300b349efb7dcf3fe0644d923/FLAG509cfcbfe [2020-12-23 07:29:44,614 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:29:44,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2020-12-23 07:29:44,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3ebbac0b2/1d12d94300b349efb7dcf3fe0644d923/FLAG509cfcbfe [2020-12-23 07:29:44,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3ebbac0b2/1d12d94300b349efb7dcf3fe0644d923 [2020-12-23 07:29:44,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:29:44,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:29:44,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:29:44,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:29:44,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:29:44,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:29:44" (1/1) ... [2020-12-23 07:29:45,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a61a3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45, skipping insertion in model container [2020-12-23 07:29:45,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:29:44" (1/1) ... [2020-12-23 07:29:45,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:29:45,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:29:45,181 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/dijkstra-u_valuebound2.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:29:45,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:29:45,224 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:29:45,238 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/dijkstra-u_valuebound2.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:29:45,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:29:45,289 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:29:45,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45 WrapperNode [2020-12-23 07:29:45,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:29:45,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:29:45,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:29:45,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:29:45,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45" (1/1) ... [2020-12-23 07:29:45,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45" (1/1) ... [2020-12-23 07:29:45,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:29:45,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:29:45,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:29:45,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:29:45,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45" (1/1) ... [2020-12-23 07:29:45,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45" (1/1) ... [2020-12-23 07:29:45,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45" (1/1) ... [2020-12-23 07:29:45,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45" (1/1) ... [2020-12-23 07:29:45,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45" (1/1) ... [2020-12-23 07:29:45,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45" (1/1) ... [2020-12-23 07:29:45,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45" (1/1) ... [2020-12-23 07:29:45,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:29:45,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:29:45,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:29:45,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:29:45,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45" (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 07:29:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:29:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:29:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:29:45,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:29:48,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:29:48,050 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-23 07:29:48,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:29:48 BoogieIcfgContainer [2020-12-23 07:29:48,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:29:48,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:29:48,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:29:48,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:29:48,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:29:44" (1/3) ... [2020-12-23 07:29:48,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f3895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:29:48, skipping insertion in model container [2020-12-23 07:29:48,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:45" (2/3) ... [2020-12-23 07:29:48,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f3895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:29:48, skipping insertion in model container [2020-12-23 07:29:48,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:29:48" (3/3) ... [2020-12-23 07:29:48,060 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound2.c [2020-12-23 07:29:48,067 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:29:48,071 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-23 07:29:48,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-23 07:29:48,115 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:29:48,115 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:29:48,116 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:29:48,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:29:48,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:29:48,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:29:48,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:29:48,116 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:29:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-23 07:29:48,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:29:48,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:48,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:48,141 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:48,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:48,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2020-12-23 07:29:48,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:48,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81548945] [2020-12-23 07:29:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:48,328 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 07:29:48,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81548945] [2020-12-23 07:29:48,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:48,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:29:48,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675627218] [2020-12-23 07:29:48,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:29:48,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:48,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:29:48,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:29:48,359 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-23 07:29:48,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:48,386 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2020-12-23 07:29:48,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:29:48,388 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 07:29:48,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:48,399 INFO L225 Difference]: With dead ends: 97 [2020-12-23 07:29:48,399 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 07:29:48,403 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 07:29:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 07:29:48,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-23 07:29:48,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 07:29:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-23 07:29:48,450 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2020-12-23 07:29:48,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:48,450 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-23 07:29:48,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:29:48,450 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-23 07:29:48,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:29:48,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:48,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:48,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:29:48,452 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:48,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:48,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2020-12-23 07:29:48,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:48,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677803823] [2020-12-23 07:29:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:48,779 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 07:29:48,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677803823] [2020-12-23 07:29:48,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:48,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:29:48,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780451056] [2020-12-23 07:29:48,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:29:48,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:48,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:29:48,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:29:48,783 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 5 states. [2020-12-23 07:30:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:30:03,917 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2020-12-23 07:30:03,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:30:03,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 07:30:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:30:03,920 INFO L225 Difference]: With dead ends: 110 [2020-12-23 07:30:03,921 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 07:30:03,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:30:03,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 07:30:03,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2020-12-23 07:30:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:30:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-23 07:30:03,936 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2020-12-23 07:30:03,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:30:03,936 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-23 07:30:03,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:30:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-23 07:30:03,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:30:03,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:30:03,938 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:30:03,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:30:03,938 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:30:03,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:30:03,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2020-12-23 07:30:03,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:30:03,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836218021] [2020-12-23 07:30:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:30:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:30:04,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836218021] [2020-12-23 07:30:04,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981136639] [2020-12-23 07:30:04,184 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 07:30:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:04,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 07:30:04,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:30:04,598 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:30:04,610 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:30:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:30:04,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:30:04,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2020-12-23 07:30:04,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110976037] [2020-12-23 07:30:04,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:30:04,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:30:04,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:30:04,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:30:04,672 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-12-23 07:30:20,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:30:20,871 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-12-23 07:30:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:30:20,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-12-23 07:30:20,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:30:20,877 INFO L225 Difference]: With dead ends: 140 [2020-12-23 07:30:20,884 INFO L226 Difference]: Without dead ends: 100 [2020-12-23 07:30:20,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-12-23 07:30:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-23 07:30:20,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 90. [2020-12-23 07:30:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-23 07:30:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2020-12-23 07:30:20,908 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 13 [2020-12-23 07:30:20,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:30:20,908 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2020-12-23 07:30:20,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:30:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2020-12-23 07:30:20,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:30:20,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:30:20,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:30:21,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 07:30:21,123 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:30:21,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:30:21,125 INFO L82 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2020-12-23 07:30:21,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:30:21,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475298029] [2020-12-23 07:30:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:30:21,143 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:30:21,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53042283] [2020-12-23 07:30:21,144 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 07:30:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:21,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:30:21,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:30:21,336 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 07:30:21,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475298029] [2020-12-23 07:30:21,337 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:30:21,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53042283] [2020-12-23 07:30:21,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:30:21,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:30:21,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901074141] [2020-12-23 07:30:21,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:30:21,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:30:21,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:30:21,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:30:21,340 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 6 states. [2020-12-23 07:30:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:30:30,080 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-12-23 07:30:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:30:30,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:30:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:30:30,083 INFO L225 Difference]: With dead ends: 94 [2020-12-23 07:30:30,083 INFO L226 Difference]: Without dead ends: 75 [2020-12-23 07:30:30,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:30:30,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-23 07:30:30,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-12-23 07:30:30,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:30:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-12-23 07:30:30,094 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 15 [2020-12-23 07:30:30,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:30:30,094 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-12-23 07:30:30,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:30:30,095 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-12-23 07:30:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:30:30,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:30:30,095 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:30:30,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:30:30,303 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:30:30,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:30:30,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2020-12-23 07:30:30,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:30:30,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079305049] [2020-12-23 07:30:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:30:30,320 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:30:30,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532848886] [2020-12-23 07:30:30,321 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 07:30:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:30,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:30:30,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:30:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 07:30:30,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079305049] [2020-12-23 07:30:30,554 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:30:30,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532848886] [2020-12-23 07:30:30,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:30:30,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:30:30,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7893531] [2020-12-23 07:30:30,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:30:30,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:30:30,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:30:30,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:30:30,556 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 6 states. [2020-12-23 07:30:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:30:43,444 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2020-12-23 07:30:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:30:43,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 07:30:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:30:43,446 INFO L225 Difference]: With dead ends: 77 [2020-12-23 07:30:43,446 INFO L226 Difference]: Without dead ends: 75 [2020-12-23 07:30:43,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:30:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-23 07:30:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-12-23 07:30:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:30:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-12-23 07:30:43,465 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 17 [2020-12-23 07:30:43,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:30:43,466 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-12-23 07:30:43,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:30:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-12-23 07:30:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:30:43,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:30:43,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:30:43,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:30:43,674 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:30:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:30:43,675 INFO L82 PathProgramCache]: Analyzing trace with hash -957581047, now seen corresponding path program 1 times [2020-12-23 07:30:43,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:30:43,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043909437] [2020-12-23 07:30:43,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:30:43,714 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:30:43,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839907383] [2020-12-23 07:30:43,715 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 07:30:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:43,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:30:43,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:30:44,185 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:30:44,200 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:30:44,241 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 07:30:44,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043909437] [2020-12-23 07:30:44,243 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:30:44,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839907383] [2020-12-23 07:30:44,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:30:44,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:30:44,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746537871] [2020-12-23 07:30:44,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:30:44,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:30:44,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:30:44,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:30:44,249 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-12-23 07:30:52,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:30:52,165 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2020-12-23 07:30:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:30:52,166 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-12-23 07:30:52,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:30:52,166 INFO L225 Difference]: With dead ends: 110 [2020-12-23 07:30:52,167 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:30:52,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:30:52,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:30:52,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-23 07:30:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 07:30:52,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 58 transitions. [2020-12-23 07:30:52,174 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 58 transitions. Word has length 27 [2020-12-23 07:30:52,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:30:52,175 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 58 transitions. [2020-12-23 07:30:52,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:30:52,175 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 58 transitions. [2020-12-23 07:30:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:30:52,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:30:52,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:30:52,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:30:52,385 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:30:52,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:30:52,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1112228340, now seen corresponding path program 1 times [2020-12-23 07:30:52,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:30:52,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933755314] [2020-12-23 07:30:52,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:30:52,414 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:30:52,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788528790] [2020-12-23 07:30:52,417 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 07:30:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:52,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 07:30:52,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:30:52,987 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 07:30:52,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933755314] [2020-12-23 07:30:52,988 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:30:52,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788528790] [2020-12-23 07:30:52,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:30:52,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:30:52,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555960141] [2020-12-23 07:30:52,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:30:52,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:30:52,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:30:52,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:30:52,990 INFO L87 Difference]: Start difference. First operand 59 states and 58 transitions. Second operand 9 states. [2020-12-23 07:31:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:03,744 INFO L93 Difference]: Finished difference Result 59 states and 58 transitions. [2020-12-23 07:31:03,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:31:03,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-12-23 07:31:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:03,745 INFO L225 Difference]: With dead ends: 59 [2020-12-23 07:31:03,745 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 07:31:03,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:31:03,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 07:31:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-23 07:31:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-23 07:31:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 56 transitions. [2020-12-23 07:31:03,752 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 56 transitions. Word has length 29 [2020-12-23 07:31:03,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:03,753 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 56 transitions. [2020-12-23 07:31:03,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:31:03,753 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 56 transitions. [2020-12-23 07:31:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:31:03,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:03,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:03,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:31:03,958 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:03,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:03,959 INFO L82 PathProgramCache]: Analyzing trace with hash 595578799, now seen corresponding path program 1 times [2020-12-23 07:31:03,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:03,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646882257] [2020-12-23 07:31:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:03,972 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:03,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303466968] [2020-12-23 07:31:03,973 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 07:31:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:04,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:31:04,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:04,840 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 18 [2020-12-23 07:31:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:31:04,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646882257] [2020-12-23 07:31:04,883 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:04,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303466968] [2020-12-23 07:31:04,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:31:04,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:31:04,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624726959] [2020-12-23 07:31:04,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:31:04,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:04,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:31:04,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:31:04,886 INFO L87 Difference]: Start difference. First operand 57 states and 56 transitions. Second operand 10 states. [2020-12-23 07:31:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:12,456 INFO L93 Difference]: Finished difference Result 57 states and 56 transitions. [2020-12-23 07:31:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:31:12,457 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 07:31:12,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:12,457 INFO L225 Difference]: With dead ends: 57 [2020-12-23 07:31:12,458 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 07:31:12,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:31:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 07:31:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-23 07:31:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 07:31:12,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2020-12-23 07:31:12,463 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 31 [2020-12-23 07:31:12,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:12,463 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2020-12-23 07:31:12,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:31:12,464 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2020-12-23 07:31:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:31:12,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:12,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:12,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:12,671 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:12,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:12,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1120732658, now seen corresponding path program 1 times [2020-12-23 07:31:12,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:12,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552183324] [2020-12-23 07:31:12,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:12,685 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:12,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721287783] [2020-12-23 07:31:12,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true