/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/hard-u_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:48:38,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:48:38,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:48:38,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:48:38,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:48:38,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:48:38,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:48:38,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:48:38,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:48:38,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:48:38,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:48:38,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:48:38,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:48:38,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:48:38,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:48:38,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:48:38,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:48:38,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:48:38,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:48:38,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:48:38,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:48:38,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:48:38,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:48:38,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:48:38,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:48:38,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:48:38,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:48:38,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:48:38,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:48:38,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:48:38,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:48:38,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:48:38,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:48:38,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:48:38,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:48:38,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:48:38,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:48:38,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:48:38,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:48:38,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:48:38,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:48:38,369 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:48:38,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:48:38,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:48:38,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:48:38,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:48:38,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:48:38,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:48:38,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:48:38,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:48:38,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:48:38,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:48:38,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:48:38,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:48:38,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:48:38,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:48:38,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:48:38,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:48:38,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:48:38,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:48:38,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:48:38,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:48:38,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:48:38,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:48:38,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:48:38,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:48:38,754 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:48:38,755 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:48:38,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound20.c [2021-01-06 17:48:38,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b296dbdfb/50deabcdb17141169b1c48ff4b7cdf12/FLAG86ef0e1da [2021-01-06 17:48:39,471 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:48:39,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound20.c [2021-01-06 17:48:39,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b296dbdfb/50deabcdb17141169b1c48ff4b7cdf12/FLAG86ef0e1da [2021-01-06 17:48:39,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b296dbdfb/50deabcdb17141169b1c48ff4b7cdf12 [2021-01-06 17:48:39,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:48:39,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:48:39,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:48:39,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:48:39,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:48:39,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:48:39" (1/1) ... [2021-01-06 17:48:39,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a3dee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:39, skipping insertion in model container [2021-01-06 17:48:39,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:48:39" (1/1) ... [2021-01-06 17:48:39,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:48:39,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:48:40,046 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/hard-u_unwindbound20.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~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[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:48:40,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:48:40,080 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:48:40,094 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/hard-u_unwindbound20.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~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[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:48:40,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:48:40,119 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:48:40,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40 WrapperNode [2021-01-06 17:48:40,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:48:40,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:48:40,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:48:40,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:48:40,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40" (1/1) ... [2021-01-06 17:48:40,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40" (1/1) ... [2021-01-06 17:48:40,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:48:40,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:48:40,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:48:40,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:48:40,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40" (1/1) ... [2021-01-06 17:48:40,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40" (1/1) ... [2021-01-06 17:48:40,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40" (1/1) ... [2021-01-06 17:48:40,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40" (1/1) ... [2021-01-06 17:48:40,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40" (1/1) ... [2021-01-06 17:48:40,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40" (1/1) ... [2021-01-06 17:48:40,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40" (1/1) ... [2021-01-06 17:48:40,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:48:40,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:48:40,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:48:40,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:48:40,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:48:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:48:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:48:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:48:40,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:48:40,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:48:40,760 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-01-06 17:48:40,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:48:40 BoogieIcfgContainer [2021-01-06 17:48:40,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:48:40,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:48:40,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:48:40,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:48:40,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:48:39" (1/3) ... [2021-01-06 17:48:40,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9a14e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:48:40, skipping insertion in model container [2021-01-06 17:48:40,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:40" (2/3) ... [2021-01-06 17:48:40,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9a14e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:48:40, skipping insertion in model container [2021-01-06 17:48:40,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:48:40" (3/3) ... [2021-01-06 17:48:40,795 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound20.c [2021-01-06 17:48:40,823 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:48:40,833 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:48:40,859 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:48:40,887 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:48:40,887 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:48:40,887 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:48:40,888 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:48:40,888 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:48:40,888 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:48:40,888 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:48:40,888 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:48:40,905 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:48:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:48:40,911 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:40,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:40,913 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:40,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:40,919 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2021-01-06 17:48:40,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:40,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950090890] [2021-01-06 17:48:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:41,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950090890] [2021-01-06 17:48:41,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:41,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:48:41,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008394599] [2021-01-06 17:48:41,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:48:41,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:41,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:48:41,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:48:41,117 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:48:41,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:41,139 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2021-01-06 17:48:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:48:41,140 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 17:48:41,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:41,158 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:48:41,158 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:48:41,164 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 [2021-01-06 17:48:41,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:48:41,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:48:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:48:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-01-06 17:48:41,204 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2021-01-06 17:48:41,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:41,204 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-01-06 17:48:41,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:48:41,205 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-01-06 17:48:41,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:48:41,205 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:41,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:41,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:48:41,206 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:41,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:41,207 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-01-06 17:48:41,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:41,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236215756] [2021-01-06 17:48:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:41,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236215756] [2021-01-06 17:48:41,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:41,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:48:41,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038009896] [2021-01-06 17:48:41,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:48:41,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:41,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:48:41,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:48:41,311 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2021-01-06 17:48:41,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:41,468 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-01-06 17:48:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:48:41,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-06 17:48:41,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:41,470 INFO L225 Difference]: With dead ends: 61 [2021-01-06 17:48:41,471 INFO L226 Difference]: Without dead ends: 59 [2021-01-06 17:48:41,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:48:41,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-06 17:48:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2021-01-06 17:48:41,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:48:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-01-06 17:48:41,480 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-01-06 17:48:41,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:41,481 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-01-06 17:48:41,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:48:41,481 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-01-06 17:48:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:48:41,482 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:41,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:41,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:48:41,483 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:41,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:41,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2021-01-06 17:48:41,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:41,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71989048] [2021-01-06 17:48:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:41,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71989048] [2021-01-06 17:48:41,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:41,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:48:41,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880663539] [2021-01-06 17:48:41,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:48:41,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:48:41,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:48:41,524 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2021-01-06 17:48:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:41,541 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2021-01-06 17:48:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:48:41,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 17:48:41,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:41,543 INFO L225 Difference]: With dead ends: 56 [2021-01-06 17:48:41,543 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:48:41,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:48:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:48:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:48:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:48:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-01-06 17:48:41,552 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2021-01-06 17:48:41,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:41,552 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-01-06 17:48:41,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:48:41,552 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-01-06 17:48:41,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:48:41,553 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:41,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:41,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:48:41,554 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:41,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:41,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-01-06 17:48:41,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:41,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21435674] [2021-01-06 17:48:41,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:41,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21435674] [2021-01-06 17:48:41,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:41,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:48:41,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822218916] [2021-01-06 17:48:41,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:48:41,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:41,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:48:41,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:48:41,690 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2021-01-06 17:48:41,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:41,760 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-01-06 17:48:41,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:48:41,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 17:48:41,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:41,761 INFO L225 Difference]: With dead ends: 56 [2021-01-06 17:48:41,762 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 17:48:41,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:48:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 17:48:41,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-01-06 17:48:41,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:48:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-01-06 17:48:41,771 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2021-01-06 17:48:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:41,771 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-01-06 17:48:41,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:48:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-01-06 17:48:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:48:41,772 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:41,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:41,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 17:48:41,773 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:41,774 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2021-01-06 17:48:41,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:41,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846257394] [2021-01-06 17:48:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:41,792 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:41,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689259150] [2021-01-06 17:48:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:41,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:48:41,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:41,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846257394] [2021-01-06 17:48:41,992 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:41,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689259150] [2021-01-06 17:48:41,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:41,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:48:41,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293349819] [2021-01-06 17:48:41,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:48:41,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:41,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:48:41,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:48:41,996 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2021-01-06 17:48:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:42,296 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2021-01-06 17:48:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:48:42,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-06 17:48:42,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:42,298 INFO L225 Difference]: With dead ends: 81 [2021-01-06 17:48:42,298 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 17:48:42,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:48:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 17:48:42,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-01-06 17:48:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-06 17:48:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2021-01-06 17:48:42,309 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2021-01-06 17:48:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:42,309 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2021-01-06 17:48:42,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:48:42,309 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2021-01-06 17:48:42,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:48:42,310 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:42,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:42,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:42,526 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:42,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2021-01-06 17:48:42,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:42,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341891197] [2021-01-06 17:48:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:42,544 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:42,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832048420] [2021-01-06 17:48:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:42,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:48:42,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:42,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341891197] [2021-01-06 17:48:42,730 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:42,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832048420] [2021-01-06 17:48:42,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:42,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 17:48:42,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003824320] [2021-01-06 17:48:42,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:48:42,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:42,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:48:42,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:48:42,733 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2021-01-06 17:48:42,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:42,989 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-01-06 17:48:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:48:42,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-01-06 17:48:42,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:42,991 INFO L225 Difference]: With dead ends: 53 [2021-01-06 17:48:42,991 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 17:48:42,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:48:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 17:48:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-01-06 17:48:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 17:48:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-01-06 17:48:42,999 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2021-01-06 17:48:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:42,999 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-01-06 17:48:42,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:48:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-01-06 17:48:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:48:43,000 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:43,000 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:43,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:43,215 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:43,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:43,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2021-01-06 17:48:43,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:43,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569470026] [2021-01-06 17:48:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:43,231 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:43,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736750874] [2021-01-06 17:48:43,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:43,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:48:43,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:43,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569470026] [2021-01-06 17:48:43,383 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:43,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736750874] [2021-01-06 17:48:43,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:43,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:48:43,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867563574] [2021-01-06 17:48:43,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:48:43,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:43,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:48:43,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:48:43,386 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2021-01-06 17:48:43,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:43,428 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2021-01-06 17:48:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:48:43,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 17:48:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:43,429 INFO L225 Difference]: With dead ends: 62 [2021-01-06 17:48:43,429 INFO L226 Difference]: Without dead ends: 43 [2021-01-06 17:48:43,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:48:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-01-06 17:48:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-01-06 17:48:43,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 17:48:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-01-06 17:48:43,444 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2021-01-06 17:48:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:43,445 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-01-06 17:48:43,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:48:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-01-06 17:48:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:48:43,446 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:43,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:43,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:43,660 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:43,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:43,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2021-01-06 17:48:43,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:43,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958053944] [2021-01-06 17:48:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:43,674 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:43,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890119140] [2021-01-06 17:48:43,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:43,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 17:48:43,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:44,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958053944] [2021-01-06 17:48:44,080 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:44,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890119140] [2021-01-06 17:48:44,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:44,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:48:44,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484596413] [2021-01-06 17:48:44,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:48:44,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:44,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:48:44,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:48:44,083 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2021-01-06 17:48:44,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:44,612 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-01-06 17:48:44,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:48:44,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2021-01-06 17:48:44,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:44,614 INFO L225 Difference]: With dead ends: 83 [2021-01-06 17:48:44,614 INFO L226 Difference]: Without dead ends: 71 [2021-01-06 17:48:44,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:48:44,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-01-06 17:48:44,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2021-01-06 17:48:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:48:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-01-06 17:48:44,626 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2021-01-06 17:48:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:44,626 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-01-06 17:48:44,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:48:44,626 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-01-06 17:48:44,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 17:48:44,629 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:44,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:44,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:44,836 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:44,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:44,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2021-01-06 17:48:44,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:44,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185195284] [2021-01-06 17:48:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:44,859 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:44,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445679448] [2021-01-06 17:48:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:44,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:48:44,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:45,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185195284] [2021-01-06 17:48:45,107 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:45,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445679448] [2021-01-06 17:48:45,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:45,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:48:45,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594820030] [2021-01-06 17:48:45,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:48:45,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:45,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:48:45,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:48:45,109 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 7 states. [2021-01-06 17:48:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:47,547 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2021-01-06 17:48:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:48:47,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2021-01-06 17:48:47,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:47,548 INFO L225 Difference]: With dead ends: 74 [2021-01-06 17:48:47,548 INFO L226 Difference]: Without dead ends: 70 [2021-01-06 17:48:47,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:48:47,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-06 17:48:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2021-01-06 17:48:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-06 17:48:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2021-01-06 17:48:47,560 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 24 [2021-01-06 17:48:47,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:47,560 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2021-01-06 17:48:47,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:48:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2021-01-06 17:48:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:48:47,563 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:47,564 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:47,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:47,777 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:47,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:47,778 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2021-01-06 17:48:47,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:47,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591192448] [2021-01-06 17:48:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:47,790 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:47,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427676358] [2021-01-06 17:48:47,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:47,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:48:47,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:47,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591192448] [2021-01-06 17:48:47,921 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:47,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427676358] [2021-01-06 17:48:47,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:47,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:48:47,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644646836] [2021-01-06 17:48:47,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:48:47,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:47,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:48:47,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:48:47,923 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 6 states. [2021-01-06 17:48:47,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:47,949 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2021-01-06 17:48:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:48:47,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-01-06 17:48:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:47,950 INFO L225 Difference]: With dead ends: 71 [2021-01-06 17:48:47,951 INFO L226 Difference]: Without dead ends: 65 [2021-01-06 17:48:47,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:48:47,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-06 17:48:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-01-06 17:48:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-06 17:48:47,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2021-01-06 17:48:47,961 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 27 [2021-01-06 17:48:47,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:47,961 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2021-01-06 17:48:47,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:48:47,961 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2021-01-06 17:48:47,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:48:47,962 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:47,963 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:48,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:48,177 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:48,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:48,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1875627766, now seen corresponding path program 1 times [2021-01-06 17:48:48,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:48,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339559026] [2021-01-06 17:48:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:48,191 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:48,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746597330] [2021-01-06 17:48:48,192 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 [2021-01-06 17:48:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:48,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:48:48,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:48,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339559026] [2021-01-06 17:48:48,317 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:48,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746597330] [2021-01-06 17:48:48,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:48,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:48:48,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295462226] [2021-01-06 17:48:48,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:48:48,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:48,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:48:48,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:48:48,320 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 6 states. [2021-01-06 17:48:48,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:48,373 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2021-01-06 17:48:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:48:48,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2021-01-06 17:48:48,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:48,380 INFO L225 Difference]: With dead ends: 94 [2021-01-06 17:48:48,380 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:48:48,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:48:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:48:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-01-06 17:48:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:48:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2021-01-06 17:48:48,409 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 28 [2021-01-06 17:48:48,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:48,409 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2021-01-06 17:48:48,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:48:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2021-01-06 17:48:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:48:48,413 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:48,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:48,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:48,629 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:48,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:48,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2021-01-06 17:48:48,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:48,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384008877] [2021-01-06 17:48:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:48,641 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:48,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168526927] [2021-01-06 17:48:48,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:49,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:48:49,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:48:49,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:48:49,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:49,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384008877] [2021-01-06 17:48:49,425 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:49,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168526927] [2021-01-06 17:48:49,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:49,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:48:49,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419691132] [2021-01-06 17:48:49,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:48:49,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:49,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:48:49,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:48:49,432 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 11 states. [2021-01-06 17:48:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:50,572 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2021-01-06 17:48:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:48:50,573 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2021-01-06 17:48:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:50,574 INFO L225 Difference]: With dead ends: 103 [2021-01-06 17:48:50,574 INFO L226 Difference]: Without dead ends: 93 [2021-01-06 17:48:50,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:48:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-06 17:48:50,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2021-01-06 17:48:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:48:50,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2021-01-06 17:48:50,584 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 28 [2021-01-06 17:48:50,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:50,584 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2021-01-06 17:48:50,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:48:50,584 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2021-01-06 17:48:50,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:48:50,585 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:50,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:50,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:48:50,798 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:50,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:50,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2021-01-06 17:48:50,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:50,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999310610] [2021-01-06 17:48:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:50,808 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:50,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686711933] [2021-01-06 17:48:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:54,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:48:54,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:55,468 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-01-06 17:48:55,545 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:55,596 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:48:55,616 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:48:55,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:48:56,096 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:48:56,603 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:58,410 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:00,323 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:02,213 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:04,225 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:05,443 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:06,529 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:07,461 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:08,833 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:10,097 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:11,299 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:12,275 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:13,143 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:17,180 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:21,545 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:26,319 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:33,280 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:45,133 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:50:04,105 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:50:07,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999310610] [2021-01-06 17:50:07,109 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:07,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686711933] [2021-01-06 17:50:07,109 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2021-01-06 17:50:07,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:07,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:50:07,110 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:50:07,110 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:50:07,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:07,338 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:50:07,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:50:07 BoogieIcfgContainer [2021-01-06 17:50:07,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:50:07,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:50:07,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:50:07,340 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:50:07,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:48:40" (3/4) ... [2021-01-06 17:50:07,344 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:50:07,344 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:50:07,345 INFO L168 Benchmark]: Toolchain (without parser) took 87485.68 ms. Allocated memory was 153.1 MB in the beginning and 332.4 MB in the end (delta: 179.3 MB). Free memory was 128.0 MB in the beginning and 195.9 MB in the end (delta: -67.9 MB). Peak memory consumption was 112.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:07,345 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:50:07,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.26 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 117.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:07,347 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.58 ms. Allocated memory is still 153.1 MB. Free memory was 117.7 MB in the beginning and 116.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:07,347 INFO L168 Benchmark]: Boogie Preprocessor took 27.10 ms. Allocated memory is still 153.1 MB. Free memory was 116.0 MB in the beginning and 114.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:07,348 INFO L168 Benchmark]: RCFGBuilder took 576.78 ms. Allocated memory is still 153.1 MB. Free memory was 114.8 MB in the beginning and 135.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:07,349 INFO L168 Benchmark]: TraceAbstraction took 86558.90 ms. Allocated memory was 153.1 MB in the beginning and 332.4 MB in the end (delta: 179.3 MB). Free memory was 134.5 MB in the beginning and 196.4 MB in the end (delta: -62.0 MB). Peak memory consumption was 207.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:07,349 INFO L168 Benchmark]: Witness Printer took 4.20 ms. Allocated memory is still 332.4 MB. Free memory was 196.4 MB in the beginning and 195.9 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:07,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.26 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 117.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.58 ms. Allocated memory is still 153.1 MB. Free memory was 117.7 MB in the beginning and 116.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.10 ms. Allocated memory is still 153.1 MB. Free memory was 116.0 MB in the beginning and 114.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 576.78 ms. Allocated memory is still 153.1 MB. Free memory was 114.8 MB in the beginning and 135.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 86558.90 ms. Allocated memory was 153.1 MB in the beginning and 332.4 MB in the end (delta: 179.3 MB). Free memory was 134.5 MB in the beginning and 196.4 MB in the end (delta: -62.0 MB). Peak memory consumption was 207.0 MB. Max. memory is 8.0 GB. * Witness Printer took 4.20 ms. Allocated memory is still 332.4 MB. Free memory was 196.4 MB in the beginning and 195.9 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<20 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 86.4s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 783 SDslu, 796 SDs, 0 SdLazy, 632 SolverSat, 126 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 94 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 30603 SizeOfPredicates, 44 NumberOfNonLiveVariables, 809 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 0/59 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...