/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_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:48:20,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:48:20,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:48:20,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:48:20,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:48:20,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:48:20,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:48:20,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:48:20,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:48:20,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:48:20,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:48:20,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:48:20,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:48:20,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:48:20,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:48:20,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:48:20,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:48:20,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:48:20,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:48:20,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:48:20,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:48:20,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:48:20,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:48:20,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:48:20,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:48:20,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:48:20,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:48:20,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:48:20,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:48:20,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:48:20,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:48:20,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:48:20,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:48:20,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:48:20,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:48:20,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:48:20,220 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 17:48:20,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:48:20,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:48:20,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:48:20,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:48:20,248 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:48:20,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:48:20,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:48:20,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:48:20,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:48:20,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:48:20,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:48:20,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:48:20,250 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:48:20,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:48:20,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:48:20,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:48:20,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:48:20,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:48:20,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:48:20,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:48:20,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:48:20,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:48:20,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:48:20,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:48:20,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:48:20,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:48:20,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:48:20,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:48:20,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:48:20,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:48:20,669 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:48:20,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound10.c [2021-01-06 17:48:20,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b4adc942d/37ec3514d3f847419e02612da5e677d7/FLAG0e6c9e556 [2021-01-06 17:48:21,369 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:48:21,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound10.c [2021-01-06 17:48:21,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b4adc942d/37ec3514d3f847419e02612da5e677d7/FLAG0e6c9e556 [2021-01-06 17:48:21,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b4adc942d/37ec3514d3f847419e02612da5e677d7 [2021-01-06 17:48:21,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:48:21,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:48:21,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:48:21,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:48:21,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:48:21,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:48:21" (1/1) ... [2021-01-06 17:48:21,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7185a6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:21, skipping insertion in model container [2021-01-06 17:48:21,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:48:21" (1/1) ... [2021-01-06 17:48:21,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:48:21,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:48:21,947 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_unwindbound10.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 17:48:21,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:48:21,979 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:48:21,994 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_unwindbound10.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 17:48:22,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:48:22,019 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:48:22,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22 WrapperNode [2021-01-06 17:48:22,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:48:22,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:48:22,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:48:22,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:48:22,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22" (1/1) ... [2021-01-06 17:48:22,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22" (1/1) ... [2021-01-06 17:48:22,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:48:22,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:48:22,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:48:22,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:48:22,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22" (1/1) ... [2021-01-06 17:48:22,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22" (1/1) ... [2021-01-06 17:48:22,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22" (1/1) ... [2021-01-06 17:48:22,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22" (1/1) ... [2021-01-06 17:48:22,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22" (1/1) ... [2021-01-06 17:48:22,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22" (1/1) ... [2021-01-06 17:48:22,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22" (1/1) ... [2021-01-06 17:48:22,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:48:22,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:48:22,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:48:22,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:48:22,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22" (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 17:48:22,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:48:22,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:48:22,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:48:22,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:48:22,552 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:48:22,553 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-01-06 17:48:22,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:48:22 BoogieIcfgContainer [2021-01-06 17:48:22,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:48:22,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:48:22,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:48:22,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:48:22,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:48:21" (1/3) ... [2021-01-06 17:48:22,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298800fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:48:22, skipping insertion in model container [2021-01-06 17:48:22,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:48:22" (2/3) ... [2021-01-06 17:48:22,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298800fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:48:22, skipping insertion in model container [2021-01-06 17:48:22,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:48:22" (3/3) ... [2021-01-06 17:48:22,564 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound10.c [2021-01-06 17:48:22,571 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:48:22,577 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:48:22,600 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:48:22,637 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:48:22,637 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:48:22,637 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:48:22,638 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:48:22,638 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:48:22,638 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:48:22,638 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:48:22,638 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:48:22,662 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:48:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:48:22,670 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:22,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:22,671 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 17:48:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:22,685 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2021-01-06 17:48:22,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:22,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993173916] [2021-01-06 17:48:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:22,924 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 17:48:22,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993173916] [2021-01-06 17:48:22,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:22,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:48:22,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566622623] [2021-01-06 17:48:22,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:48:22,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:22,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:48:22,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:48:22,952 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:48:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:22,978 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2021-01-06 17:48:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:48:22,979 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 17:48:22,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:22,991 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:48:22,992 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:48:22,995 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 17:48:23,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:48:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:48:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:48:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-01-06 17:48:23,037 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2021-01-06 17:48:23,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:23,037 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-01-06 17:48:23,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:48:23,038 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-01-06 17:48:23,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:48:23,038 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:23,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:23,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:48:23,039 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 17:48:23,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:23,040 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-01-06 17:48:23,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:23,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300556296] [2021-01-06 17:48:23,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:23,217 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 17:48:23,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300556296] [2021-01-06 17:48:23,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:23,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:48:23,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390095373] [2021-01-06 17:48:23,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:48:23,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:23,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:48:23,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:48:23,221 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2021-01-06 17:48:23,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:23,332 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-01-06 17:48:23,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:48:23,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-06 17:48:23,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:23,334 INFO L225 Difference]: With dead ends: 61 [2021-01-06 17:48:23,334 INFO L226 Difference]: Without dead ends: 59 [2021-01-06 17:48:23,335 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 17:48:23,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-06 17:48:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2021-01-06 17:48:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:48:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-01-06 17:48:23,345 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-01-06 17:48:23,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:23,345 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-01-06 17:48:23,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:48:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-01-06 17:48:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:48:23,346 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:23,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:23,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:48:23,347 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 17:48:23,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:23,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2021-01-06 17:48:23,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:23,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714015288] [2021-01-06 17:48:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:23,392 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 17:48:23,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714015288] [2021-01-06 17:48:23,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:23,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:48:23,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807731825] [2021-01-06 17:48:23,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:48:23,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:23,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:48:23,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:48:23,398 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2021-01-06 17:48:23,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:23,441 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2021-01-06 17:48:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:48:23,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 17:48:23,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:23,446 INFO L225 Difference]: With dead ends: 56 [2021-01-06 17:48:23,446 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:48:23,447 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 17:48:23,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:48:23,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:48:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:48:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-01-06 17:48:23,466 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2021-01-06 17:48:23,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:23,467 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-01-06 17:48:23,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:48:23,467 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-01-06 17:48:23,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:48:23,469 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:23,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:23,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:48:23,469 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 17:48:23,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:23,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-01-06 17:48:23,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:23,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709601072] [2021-01-06 17:48:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:23,650 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 17:48:23,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709601072] [2021-01-06 17:48:23,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:23,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:48:23,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285525796] [2021-01-06 17:48:23,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:48:23,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:23,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:48:23,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:48:23,658 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2021-01-06 17:48:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:23,780 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-01-06 17:48:23,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:48:23,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 17:48:23,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:23,783 INFO L225 Difference]: With dead ends: 56 [2021-01-06 17:48:23,783 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 17:48:23,783 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 17:48:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 17:48:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-01-06 17:48:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:48:23,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-01-06 17:48:23,797 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2021-01-06 17:48:23,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:23,799 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-01-06 17:48:23,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:48:23,799 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-01-06 17:48:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:48:23,800 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:23,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:23,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 17:48:23,801 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 17:48:23,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2021-01-06 17:48:23,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:23,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923680491] [2021-01-06 17:48:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:23,821 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:23,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767846356] [2021-01-06 17:48:23,821 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 17:48:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:23,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:48:23,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:24,037 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 17:48:24,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923680491] [2021-01-06 17:48:24,038 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:24,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767846356] [2021-01-06 17:48:24,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:24,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:48:24,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873531633] [2021-01-06 17:48:24,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:48:24,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:24,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:48:24,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:48:24,041 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2021-01-06 17:48:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:24,244 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2021-01-06 17:48:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:48:24,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-06 17:48:24,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:24,247 INFO L225 Difference]: With dead ends: 81 [2021-01-06 17:48:24,247 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 17:48:24,248 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 17:48:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 17:48:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-01-06 17:48:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-06 17:48:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2021-01-06 17:48:24,257 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2021-01-06 17:48:24,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:24,257 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2021-01-06 17:48:24,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:48:24,258 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2021-01-06 17:48:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:48:24,258 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:24,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:24,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:24,473 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 17:48:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:24,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2021-01-06 17:48:24,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:24,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370263578] [2021-01-06 17:48:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:24,488 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:24,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069083994] [2021-01-06 17:48:24,489 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 17:48:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:24,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:48:24,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:24,671 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 17:48:24,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370263578] [2021-01-06 17:48:24,672 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:24,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069083994] [2021-01-06 17:48:24,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:24,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 17:48:24,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715144365] [2021-01-06 17:48:24,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:48:24,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:24,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:48:24,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:48:24,675 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2021-01-06 17:48:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:24,973 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-01-06 17:48:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:48:24,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-01-06 17:48:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:24,979 INFO L225 Difference]: With dead ends: 53 [2021-01-06 17:48:24,979 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 17:48:24,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:48:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 17:48:24,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-01-06 17:48:24,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 17:48:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-01-06 17:48:24,997 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2021-01-06 17:48:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:25,003 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-01-06 17:48:25,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:48:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-01-06 17:48:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:48:25,005 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:25,006 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 17:48:25,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:25,215 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 17:48:25,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:25,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2021-01-06 17:48:25,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:25,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313885598] [2021-01-06 17:48:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:25,230 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:25,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819665223] [2021-01-06 17:48:25,231 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 17:48:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:25,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:48:25,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:25,336 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 17:48:25,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313885598] [2021-01-06 17:48:25,337 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:25,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819665223] [2021-01-06 17:48:25,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:25,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:48:25,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103200239] [2021-01-06 17:48:25,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:48:25,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:25,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:48:25,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:48:25,339 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2021-01-06 17:48:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:25,366 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2021-01-06 17:48:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:48:25,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 17:48:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:25,368 INFO L225 Difference]: With dead ends: 62 [2021-01-06 17:48:25,368 INFO L226 Difference]: Without dead ends: 43 [2021-01-06 17:48:25,369 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 17:48:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-01-06 17:48:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-01-06 17:48:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 17:48:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-01-06 17:48:25,375 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2021-01-06 17:48:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:25,375 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-01-06 17:48:25,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:48:25,375 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-01-06 17:48:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:48:25,376 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:25,376 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:25,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:25,593 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 17:48:25,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:25,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2021-01-06 17:48:25,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:25,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402369734] [2021-01-06 17:48:25,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:25,613 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:25,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813365619] [2021-01-06 17:48:25,613 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 17:48:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:25,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 17:48:25,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:25,945 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 17:48:25,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402369734] [2021-01-06 17:48:25,946 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:25,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813365619] [2021-01-06 17:48:25,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:25,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:48:25,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756481823] [2021-01-06 17:48:25,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:48:25,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:25,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:48:25,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:48:25,948 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2021-01-06 17:48:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:26,406 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-01-06 17:48:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:48:26,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2021-01-06 17:48:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:26,414 INFO L225 Difference]: With dead ends: 83 [2021-01-06 17:48:26,414 INFO L226 Difference]: Without dead ends: 71 [2021-01-06 17:48:26,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:48:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-01-06 17:48:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2021-01-06 17:48:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:48:26,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-01-06 17:48:26,428 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2021-01-06 17:48:26,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:26,429 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-01-06 17:48:26,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:48:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-01-06 17:48:26,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 17:48:26,430 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:26,430 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 17:48:26,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:26,635 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 17:48:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:26,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2021-01-06 17:48:26,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:26,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308803772] [2021-01-06 17:48:26,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:26,647 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:26,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814369212] [2021-01-06 17:48:26,648 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 17:48:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:26,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:48:26,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:26,872 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 17:48:26,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308803772] [2021-01-06 17:48:26,872 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:26,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814369212] [2021-01-06 17:48:26,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:26,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:48:26,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361676582] [2021-01-06 17:48:26,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:48:26,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:26,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:48:26,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:48:26,880 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 7 states. [2021-01-06 17:48:27,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:27,197 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2021-01-06 17:48:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:48:27,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2021-01-06 17:48:27,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:27,199 INFO L225 Difference]: With dead ends: 74 [2021-01-06 17:48:27,199 INFO L226 Difference]: Without dead ends: 70 [2021-01-06 17:48:27,199 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 17:48:27,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-06 17:48:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2021-01-06 17:48:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-06 17:48:27,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2021-01-06 17:48:27,208 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 24 [2021-01-06 17:48:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:27,208 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2021-01-06 17:48:27,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:48:27,208 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2021-01-06 17:48:27,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:48:27,209 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:27,209 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 17:48:27,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:27,423 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 17:48:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:27,424 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2021-01-06 17:48:27,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:27,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918044566] [2021-01-06 17:48:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:27,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:27,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149383428] [2021-01-06 17:48:27,438 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 17:48:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:27,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:48:27,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:27,555 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 17:48:27,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918044566] [2021-01-06 17:48:27,556 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:27,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149383428] [2021-01-06 17:48:27,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:27,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:48:27,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83263089] [2021-01-06 17:48:27,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:48:27,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:27,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:48:27,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:48:27,558 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 6 states. [2021-01-06 17:48:27,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:27,582 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2021-01-06 17:48:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:48:27,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-01-06 17:48:27,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:27,583 INFO L225 Difference]: With dead ends: 71 [2021-01-06 17:48:27,583 INFO L226 Difference]: Without dead ends: 65 [2021-01-06 17:48:27,584 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 17:48:27,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-06 17:48:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-01-06 17:48:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-06 17:48:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2021-01-06 17:48:27,591 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 27 [2021-01-06 17:48:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:27,592 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2021-01-06 17:48:27,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:48:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2021-01-06 17:48:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:48:27,593 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:27,593 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 17:48:27,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:27,808 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 17:48:27,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:27,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1875627766, now seen corresponding path program 1 times [2021-01-06 17:48:27,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:27,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025192701] [2021-01-06 17:48:27,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:27,821 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:27,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62200291] [2021-01-06 17:48:27,821 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 17:48:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:27,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:48:27,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:27,932 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 17:48:27,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025192701] [2021-01-06 17:48:27,933 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:27,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62200291] [2021-01-06 17:48:27,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:27,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:48:27,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120845582] [2021-01-06 17:48:27,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:48:27,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:27,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:48:27,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:48:27,935 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 6 states. [2021-01-06 17:48:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:27,976 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2021-01-06 17:48:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:48:27,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2021-01-06 17:48:27,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:27,978 INFO L225 Difference]: With dead ends: 94 [2021-01-06 17:48:27,978 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:48:27,979 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 17:48:27,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:48:27,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-01-06 17:48:27,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:48:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2021-01-06 17:48:27,987 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 28 [2021-01-06 17:48:27,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:27,987 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2021-01-06 17:48:27,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:48:27,987 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2021-01-06 17:48:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:48:27,988 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:27,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:28,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:28,202 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 17:48:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:28,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2021-01-06 17:48:28,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:28,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939567809] [2021-01-06 17:48:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:28,214 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:28,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961071194] [2021-01-06 17:48:28,215 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 17:48:28,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:48:28,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:48:28,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:48:28,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:28,900 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 17:48:28,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939567809] [2021-01-06 17:48:28,901 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:28,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961071194] [2021-01-06 17:48:28,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:28,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:48:28,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47594699] [2021-01-06 17:48:28,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:48:28,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:28,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:48:28,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:48:28,903 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 11 states. [2021-01-06 17:48:29,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:29,826 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2021-01-06 17:48:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:48:29,826 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2021-01-06 17:48:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:29,827 INFO L225 Difference]: With dead ends: 103 [2021-01-06 17:48:29,827 INFO L226 Difference]: Without dead ends: 93 [2021-01-06 17:48:29,828 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 17:48:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-06 17:48:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2021-01-06 17:48:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:48:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2021-01-06 17:48:29,837 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 28 [2021-01-06 17:48:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:29,837 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2021-01-06 17:48:29,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:48:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2021-01-06 17:48:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:48:29,838 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:29,839 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 17:48:30,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:48:30,051 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 17:48:30,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:30,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2021-01-06 17:48:30,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:30,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521344692] [2021-01-06 17:48:30,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:30,064 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:30,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263562521] [2021-01-06 17:48:30,064 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 17:48:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:34,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:48:34,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:34,687 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:34,741 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:48:34,763 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:48:34,965 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:48:35,244 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:48:35,782 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:37,517 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:39,446 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:41,308 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:43,409 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:44,632 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:45,612 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:46,498 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:47,985 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:49,135 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:50,144 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:51,257 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:52,126 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:48:55,606 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:00,186 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:05,132 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:12,180 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:24,351 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:43,687 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:49:46,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521344692] [2021-01-06 17:49:46,701 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:46,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263562521] [2021-01-06 17:49:46,702 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2021-01-06 17:49:46,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:46,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:49:46,702 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:49:46,702 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:49:46,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:46,939 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:49:46,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:49:46 BoogieIcfgContainer [2021-01-06 17:49:46,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:49:46,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:49:46,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:49:46,940 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:49:46,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:48:22" (3/4) ... [2021-01-06 17:49:46,944 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:49:46,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:49:46,946 INFO L168 Benchmark]: Toolchain (without parser) took 85215.99 ms. Allocated memory was 153.1 MB in the beginning and 267.4 MB in the end (delta: 114.3 MB). Free memory was 108.6 MB in the beginning and 132.7 MB in the end (delta: -24.1 MB). Peak memory consumption was 91.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:49:46,946 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:49:46,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.64 ms. Allocated memory is still 153.1 MB. Free memory was 108.6 MB in the beginning and 98.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:49:46,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.02 ms. Allocated memory is still 153.1 MB. Free memory was 98.1 MB in the beginning and 96.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:49:46,948 INFO L168 Benchmark]: Boogie Preprocessor took 56.68 ms. Allocated memory is still 153.1 MB. Free memory was 96.5 MB in the beginning and 95.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:49:46,948 INFO L168 Benchmark]: RCFGBuilder took 434.03 ms. Allocated memory is still 153.1 MB. Free memory was 95.5 MB in the beginning and 119.6 MB in the end (delta: -24.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:49:46,949 INFO L168 Benchmark]: TraceAbstraction took 84382.88 ms. Allocated memory was 153.1 MB in the beginning and 267.4 MB in the end (delta: 114.3 MB). Free memory was 119.1 MB in the beginning and 133.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 150.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:49:46,950 INFO L168 Benchmark]: Witness Printer took 4.02 ms. Allocated memory is still 267.4 MB. Free memory was 133.0 MB in the beginning and 132.7 MB in the end (delta: 301.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:49:46,953 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 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 287.64 ms. Allocated memory is still 153.1 MB. Free memory was 108.6 MB in the beginning and 98.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.02 ms. Allocated memory is still 153.1 MB. Free memory was 98.1 MB in the beginning and 96.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.68 ms. Allocated memory is still 153.1 MB. Free memory was 96.5 MB in the beginning and 95.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 434.03 ms. Allocated memory is still 153.1 MB. Free memory was 95.5 MB in the beginning and 119.6 MB in the end (delta: -24.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 84382.88 ms. Allocated memory was 153.1 MB in the beginning and 267.4 MB in the end (delta: 114.3 MB). Free memory was 119.1 MB in the beginning and 133.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 150.0 MB. Max. memory is 8.0 GB. * Witness Printer took 4.02 ms. Allocated memory is still 267.4 MB. Free memory was 133.0 MB in the beginning and 132.7 MB in the end (delta: 301.8 kB). There was no memory consumed. 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++<10 [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++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<10 [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++<10 [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: 84.2s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 783 SDslu, 796 SDs, 0 SdLazy, 633 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.4s 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, 0.8s SatisfiabilityAnalysisTime, 1.2s 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...