/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/geo2-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:40:31,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:40:31,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:40:31,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:40:31,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:40:31,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:40:31,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:40:31,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:40:31,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:40:31,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:40:31,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:40:31,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:40:31,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:40:31,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:40:31,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:40:31,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:40:31,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:40:31,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:40:31,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:40:31,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:40:31,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:40:31,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:40:31,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:40:31,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:40:31,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 17:40:31,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 17:40:31,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 17:40:31,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 17:40:31,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 17:40:31,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 17:40:31,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:40:31,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:40:31,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:40:31,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:40:31,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:40:31,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:40:31,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:40:31,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:40:31,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:40:31,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:40:31,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:40:31,330 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 17:40:31,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:40:31,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:40:31,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:40:31,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:40:31,377 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:40:31,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:40:31,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:40:31,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:40:31,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:40:31,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:40:31,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:40:31,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:40:31,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:40:31,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:40:31,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:40:31,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:40:31,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:40:31,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:40:31,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:40:31,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:40:31,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:40:31,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:40:31,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:40:31,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:40:31,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:40:31,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:40:31,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:40:31,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:40:31,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:40:31,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:40:31,762 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:40:31,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound50.c [2021-01-06 17:40:31,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/059def759/e56a61e96da648219f1b484fba78f5a5/FLAGee063e360 [2021-01-06 17:40:32,487 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:40:32,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound50.c [2021-01-06 17:40:32,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/059def759/e56a61e96da648219f1b484fba78f5a5/FLAGee063e360 [2021-01-06 17:40:32,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/059def759/e56a61e96da648219f1b484fba78f5a5 [2021-01-06 17:40:32,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:40:32,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:40:32,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:40:32,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:40:32,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:40:32,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:40:32" (1/1) ... [2021-01-06 17:40:32,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a418fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:32, skipping insertion in model container [2021-01-06 17:40:32,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:40:32" (1/1) ... [2021-01-06 17:40:32,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:40:32,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:40:33,060 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/geo2-ll_unwindbound50.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2021-01-06 17:40:33,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:40:33,088 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:40:33,102 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/geo2-ll_unwindbound50.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2021-01-06 17:40:33,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:40:33,124 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:40:33,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33 WrapperNode [2021-01-06 17:40:33,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:40:33,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:40:33,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:40:33,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:40:33,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33" (1/1) ... [2021-01-06 17:40:33,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33" (1/1) ... [2021-01-06 17:40:33,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:40:33,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:40:33,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:40:33,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:40:33,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33" (1/1) ... [2021-01-06 17:40:33,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33" (1/1) ... [2021-01-06 17:40:33,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33" (1/1) ... [2021-01-06 17:40:33,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33" (1/1) ... [2021-01-06 17:40:33,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33" (1/1) ... [2021-01-06 17:40:33,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33" (1/1) ... [2021-01-06 17:40:33,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33" (1/1) ... [2021-01-06 17:40:33,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:40:33,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:40:33,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:40:33,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:40:33,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33" (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 17:40:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:40:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:40:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:40:33,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:40:33,557 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:40:33,557 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-06 17:40:33,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:40:33 BoogieIcfgContainer [2021-01-06 17:40:33,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:40:33,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:40:33,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:40:33,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:40:33,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:40:32" (1/3) ... [2021-01-06 17:40:33,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5079ce6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:40:33, skipping insertion in model container [2021-01-06 17:40:33,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:33" (2/3) ... [2021-01-06 17:40:33,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5079ce6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:40:33, skipping insertion in model container [2021-01-06 17:40:33,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:40:33" (3/3) ... [2021-01-06 17:40:33,568 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound50.c [2021-01-06 17:40:33,576 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:40:33,581 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:40:33,605 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:40:33,638 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:40:33,638 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:40:33,638 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:40:33,638 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:40:33,639 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:40:33,639 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:40:33,639 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:40:33,639 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:40:33,669 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-01-06 17:40:33,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:40:33,699 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:40:33,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:40:33,700 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:40:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:40:33,723 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 17:40:33,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:40:33,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306910472] [2021-01-06 17:40:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:40:33,876 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:40:33,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097137539] [2021-01-06 17:40:33,877 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 17:40:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:40:33,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 17:40:33,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:40:34,043 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 17:40:34,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306910472] [2021-01-06 17:40:34,044 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:40:34,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097137539] [2021-01-06 17:40:34,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:40:34,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:40:34,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093894642] [2021-01-06 17:40:34,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:40:34,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:40:34,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:40:34,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:40:34,070 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2021-01-06 17:40:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:40:34,151 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-01-06 17:40:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:40:34,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-06 17:40:34,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:40:34,164 INFO L225 Difference]: With dead ends: 44 [2021-01-06 17:40:34,164 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 17:40:34,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 17:40:34,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 17:40:34,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-01-06 17:40:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 17:40:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-01-06 17:40:34,204 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2021-01-06 17:40:34,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:40:34,205 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-01-06 17:40:34,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:40:34,205 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-01-06 17:40:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:40:34,206 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:40:34,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:40:34,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-01-06 17:40:34,421 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:40:34,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:40:34,423 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-01-06 17:40:34,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:40:34,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94443610] [2021-01-06 17:40:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:40:34,448 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:40:34,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770011148] [2021-01-06 17:40:34,450 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 17:40:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:40:34,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:40:34,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:40:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:40:34,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94443610] [2021-01-06 17:40:34,600 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:40:34,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770011148] [2021-01-06 17:40:34,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:40:34,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:40:34,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406209739] [2021-01-06 17:40:34,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:40:34,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:40:34,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:40:34,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:40:34,605 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2021-01-06 17:40:34,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:40:34,664 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-01-06 17:40:34,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:40:34,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:40:34,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:40:34,665 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:40:34,665 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:40:34,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:40:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:40:34,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-01-06 17:40:34,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:40:34,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-01-06 17:40:34,672 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-01-06 17:40:34,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:40:34,673 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-01-06 17:40:34,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:40:34,673 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-01-06 17:40:34,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:40:34,674 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:40:34,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2021-01-06 17:40:34,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:40:34,886 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:40:34,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:40:34,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1778536670, now seen corresponding path program 2 times [2021-01-06 17:40:34,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:40:34,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296857587] [2021-01-06 17:40:34,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:40:34,922 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:40:34,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799017955] [2021-01-06 17:40:34,923 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 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 17:40:34,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:40:34,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:40:34,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:40:34,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:40:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:40:35,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296857587] [2021-01-06 17:40:35,146 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:40:35,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799017955] [2021-01-06 17:40:35,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:40:35,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:40:35,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992679697] [2021-01-06 17:40:35,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:40:35,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:40:35,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:40:35,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:40:35,149 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2021-01-06 17:40:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:40:55,399 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-01-06 17:40:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:40:55,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2021-01-06 17:40:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:40:55,400 INFO L225 Difference]: With dead ends: 33 [2021-01-06 17:40:55,401 INFO L226 Difference]: Without dead ends: 31 [2021-01-06 17:40:55,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:40:55,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-01-06 17:40:55,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-01-06 17:40:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:40:55,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-01-06 17:40:55,408 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2021-01-06 17:40:55,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:40:55,408 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-01-06 17:40:55,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:40:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-01-06 17:40:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:40:55,409 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:40:55,409 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:40:55,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:40:55,611 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:40:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:40:55,612 INFO L82 PathProgramCache]: Analyzing trace with hash 699894435, now seen corresponding path program 1 times [2021-01-06 17:40:55,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:40:55,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644354612] [2021-01-06 17:40:55,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:40:55,632 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:40:55,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169823059] [2021-01-06 17:40:55,632 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 17:40:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:40:55,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:40:55,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:40:55,790 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 17:40:55,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644354612] [2021-01-06 17:40:55,791 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:40:55,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169823059] [2021-01-06 17:40:55,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:40:55,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:40:55,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088984613] [2021-01-06 17:40:55,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:40:55,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:40:55,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:40:55,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:40:55,794 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2021-01-06 17:40:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:40:55,834 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-01-06 17:40:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:40:55,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:40:55,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:40:55,836 INFO L225 Difference]: With dead ends: 27 [2021-01-06 17:40:55,836 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:40:55,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 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 17:40:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:40:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 17:40:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:40:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-01-06 17:40:55,842 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2021-01-06 17:40:55,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:40:55,843 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-01-06 17:40:55,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:40:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-01-06 17:40:55,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:40:55,844 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:40:55,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:40:56,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:40:56,046 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:40:56,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:40:56,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1664485700, now seen corresponding path program 1 times [2021-01-06 17:40:56,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:40:56,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147363826] [2021-01-06 17:40:56,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:40:56,060 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:40:56,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570124275] [2021-01-06 17:40:56,061 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 17:40:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:40:56,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:40:56,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:40:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 17:40:56,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147363826] [2021-01-06 17:40:56,220 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:40:56,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570124275] [2021-01-06 17:40:56,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:40:56,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:40:56,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736733127] [2021-01-06 17:40:56,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:40:56,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:40:56,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:40:56,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:40:56,223 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2021-01-06 17:41:00,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:41:00,298 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-01-06 17:41:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:41:00,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-01-06 17:41:00,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:41:00,299 INFO L225 Difference]: With dead ends: 27 [2021-01-06 17:41:00,300 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:41:00,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:41:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:41:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 17:41:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:41:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-01-06 17:41:00,305 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2021-01-06 17:41:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:41:00,306 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-01-06 17:41:00,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:41:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-01-06 17:41:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:41:00,307 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:41:00,307 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2021-01-06 17:41:00,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:41:00,519 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:41:00,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:41:00,520 INFO L82 PathProgramCache]: Analyzing trace with hash -58338866, now seen corresponding path program 3 times [2021-01-06 17:41:00,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:41:00,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944216303] [2021-01-06 17:41:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:41:00,535 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:41:00,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794719509] [2021-01-06 17:41:00,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 17:41:00,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:41:00,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:41:00,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:41:00,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:41:02,924 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:41:04,939 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:41:21,461 WARN L197 SmtUtils]: Spent 10.16 s on a formula simplification that was a NOOP. DAG size: 33 [2021-01-06 17:41:27,543 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (let ((.cse0 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (let ((.cse1 (div .cse0 ULTIMATE.start_main_~z~0))) (= (+ (* ULTIMATE.start_main_~z~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) .cse1) (+ (* .cse1 ULTIMATE.start_main_~z~0) 1))) (not (= ULTIMATE.start_main_~z~0 0)) (not (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)))))) is different from false [2021-01-06 17:41:29,555 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (let ((.cse0 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (let ((.cse1 (div .cse0 ULTIMATE.start_main_~z~0))) (= (+ (* ULTIMATE.start_main_~z~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) .cse1) (+ (* .cse1 ULTIMATE.start_main_~z~0) 1))) (not (= ULTIMATE.start_main_~z~0 0)) (not (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)))))) is different from true [2021-01-06 17:41:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 17:41:29,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944216303] [2021-01-06 17:41:29,557 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:41:29,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794719509] [2021-01-06 17:41:29,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:41:29,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:41:29,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268386395] [2021-01-06 17:41:29,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:41:29,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:41:29,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:41:29,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=4, NotChecked=8, Total=42 [2021-01-06 17:41:29,559 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2021-01-06 17:41:40,079 WARN L197 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 37 DAG size of output: 12 [2021-01-06 17:42:02,620 WARN L197 SmtUtils]: Spent 10.44 s on a formula simplification that was a NOOP. DAG size: 38 [2021-01-06 17:43:06,048 WARN L197 SmtUtils]: Spent 51.28 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-01-06 17:43:38,071 WARN L197 SmtUtils]: Spent 25.92 s on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2021-01-06 17:43:52,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:43:52,161 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-01-06 17:43:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:43:52,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 17:43:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:43:52,179 INFO L225 Difference]: With dead ends: 23 [2021-01-06 17:43:52,179 INFO L226 Difference]: Without dead ends: 21 [2021-01-06 17:43:52,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 134.7s TimeCoverageRelationStatistics Valid=35, Invalid=45, Unknown=14, NotChecked=16, Total=110 [2021-01-06 17:43:52,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-06 17:43:52,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-01-06 17:43:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:43:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-01-06 17:43:52,186 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2021-01-06 17:43:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:43:52,187 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-01-06 17:43:52,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:43:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-01-06 17:43:52,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:43:52,187 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:43:52,188 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:43:52,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:43:52,389 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:43:52,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:43:52,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1808548489, now seen corresponding path program 2 times [2021-01-06 17:43:52,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:43:52,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274677624] [2021-01-06 17:43:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:43:52,407 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:43:52,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023959497] [2021-01-06 17:43:52,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:43:52,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:43:52,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:43:52,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:43:52,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:43:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:43:52,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274677624] [2021-01-06 17:43:52,566 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:43:52,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023959497] [2021-01-06 17:43:52,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:43:52,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:43:52,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580155087] [2021-01-06 17:43:52,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:43:52,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:43:52,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:43:52,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:43:52,568 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2021-01-06 17:43:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:43:52,662 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-01-06 17:43:52,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:43:52,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2021-01-06 17:43:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:43:52,664 INFO L225 Difference]: With dead ends: 28 [2021-01-06 17:43:52,665 INFO L226 Difference]: Without dead ends: 24 [2021-01-06 17:43:52,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:43:52,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-06 17:43:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-01-06 17:43:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 17:43:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-01-06 17:43:52,673 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 19 [2021-01-06 17:43:52,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:43:52,673 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-01-06 17:43:52,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:43:52,673 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-01-06 17:43:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:43:52,674 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:43:52,674 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-01-06 17:43:52,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:43:52,889 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:43:52,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:43:52,890 INFO L82 PathProgramCache]: Analyzing trace with hash 754083403, now seen corresponding path program 3 times [2021-01-06 17:43:52,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:43:52,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628056585] [2021-01-06 17:43:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:43:52,908 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:43:52,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348573158] [2021-01-06 17:43:52,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 17:43:52,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:43:52,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:43:52,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:43:52,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:43:53,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:43:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-01-06 17:43:53,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628056585] [2021-01-06 17:43:53,981 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:43:53,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348573158] [2021-01-06 17:43:53,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:43:53,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:43:53,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184522063] [2021-01-06 17:43:53,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:43:53,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:43:53,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:43:53,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:43:53,983 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2021-01-06 17:44:16,038 WARN L197 SmtUtils]: Spent 13.41 s on a formula simplification that was a NOOP. DAG size: 37 [2021-01-06 17:44:30,518 WARN L197 SmtUtils]: Spent 14.46 s on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2021-01-06 17:44:30,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:44:30,551 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-01-06 17:44:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:44:30,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-01-06 17:44:30,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:44:30,554 INFO L225 Difference]: With dead ends: 24 [2021-01-06 17:44:30,555 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:44:30,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:44:30,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:44:30,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:44:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:44:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:44:30,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-01-06 17:44:30,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:44:30,556 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:44:30,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:44:30,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:44:30,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:44:30,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-01-06 17:44:30,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:44:31,754 WARN L197 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2021-01-06 17:44:45,281 WARN L197 SmtUtils]: Spent 13.52 s on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2021-01-06 17:44:45,284 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:44:45,284 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:44:45,284 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:44:45,285 INFO L185 CegarLoopUtils]: At program point L15-2(lines 37 38) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)))) (or (and .cse0 .cse1 (or (let ((.cse2 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (let ((.cse3 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ (* ULTIMATE.start_main_~z~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) .cse3) (+ (* .cse3 ULTIMATE.start_main_~z~0) 1))) (not (= ULTIMATE.start_main_~z~0 0)))) (= ULTIMATE.start_main_~y~0 0))) (and (<= ~counter~0 1) .cse0 .cse1 (= ULTIMATE.start_main_~y~0 1)))) [2021-01-06 17:44:45,285 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:44:45,285 INFO L192 CegarLoopUtils]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-01-06 17:44:45,285 INFO L189 CegarLoopUtils]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2021-01-06 17:44:45,285 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:44:45,286 INFO L185 CegarLoopUtils]: At program point L34-3(lines 34 43) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 1))) (or (let ((.cse1 (= ULTIMATE.start_main_~z~0 0))) (let ((.cse2 (let ((.cse3 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse3 ULTIMATE.start_main_~z~0) 0) (let ((.cse4 (div .cse3 ULTIMATE.start_main_~z~0))) (= (+ (* ULTIMATE.start_main_~z~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) .cse4) (+ (* .cse4 ULTIMATE.start_main_~z~0) 1))) (not .cse1))))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (and .cse0 .cse1) .cse2) (or .cse2 (= ULTIMATE.start_main_~y~0 0))))) (and .cse0 (<= ~counter~0 0) (= ULTIMATE.start_main_~y~0 1)))) [2021-01-06 17:44:45,286 INFO L189 CegarLoopUtils]: For program point L34-4(lines 34 43) no Hoare annotation was computed. [2021-01-06 17:44:45,286 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:44:45,286 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:44:45,286 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:44:45,286 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:44:45,286 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:44:45,286 INFO L192 CegarLoopUtils]: At program point L45(lines 24 46) the Hoare annotation is: true [2021-01-06 17:44:45,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:44:45 BoogieIcfgContainer [2021-01-06 17:44:45,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:44:45,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:44:45,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:44:45,323 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:44:45,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:40:33" (3/4) ... [2021-01-06 17:44:45,328 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:44:45,343 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-06 17:44:45,344 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:44:45,344 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:44:45,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:44:45,402 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo2-ll_unwindbound50.c-witness.graphml [2021-01-06 17:44:45,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:44:45,405 INFO L168 Benchmark]: Toolchain (without parser) took 252530.32 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 139.0 MB in the beginning and 77.8 MB in the end (delta: 61.2 MB). Peak memory consumption was 95.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:44:45,405 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 164.6 MB. Free memory is still 136.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:44:45,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.99 ms. Allocated memory is still 164.6 MB. Free memory was 138.9 MB in the beginning and 129.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:44:45,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.54 ms. Allocated memory is still 164.6 MB. Free memory was 129.0 MB in the beginning and 127.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:44:45,408 INFO L168 Benchmark]: Boogie Preprocessor took 22.17 ms. Allocated memory is still 164.6 MB. Free memory was 127.7 MB in the beginning and 126.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:44:45,408 INFO L168 Benchmark]: RCFGBuilder took 373.21 ms. Allocated memory is still 164.6 MB. Free memory was 126.5 MB in the beginning and 114.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:44:45,409 INFO L168 Benchmark]: TraceAbstraction took 251761.16 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 113.9 MB in the beginning and 80.5 MB in the end (delta: 33.4 MB). Peak memory consumption was 68.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:44:45,410 INFO L168 Benchmark]: Witness Printer took 79.96 ms. Allocated memory is still 198.2 MB. Free memory was 80.5 MB in the beginning and 77.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:44:45,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 164.6 MB. Free memory is still 136.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 247.99 ms. Allocated memory is still 164.6 MB. Free memory was 138.9 MB in the beginning and 129.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.54 ms. Allocated memory is still 164.6 MB. Free memory was 129.0 MB in the beginning and 127.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.17 ms. Allocated memory is still 164.6 MB. Free memory was 127.7 MB in the beginning and 126.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 373.21 ms. Allocated memory is still 164.6 MB. Free memory was 126.5 MB in the beginning and 114.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 251761.16 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 113.9 MB in the beginning and 80.5 MB in the end (delta: 33.4 MB). Peak memory consumption was 68.5 MB. Max. memory is 8.0 GB. * Witness Printer took 79.96 ms. Allocated memory is still 198.2 MB. Free memory was 80.5 MB in the beginning and 77.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((1 == cond && ((x == 1 && z == 0) || (((y % z == 0 && (x + -1) % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0)))) && ((((y % z == 0 && (x + -1) % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0)) || y == 0)) || ((x == 1 && counter <= 0) && y == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((1 == cond && z * y + x == z * x + 1) && ((((y % z == 0 && (x + -1) % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0)) || y == 0)) || (((counter <= 1 && 1 == cond) && z * y + x == z * x + 1) && y == 1) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 237.1s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 203.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 14.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 83 SDslu, 185 SDs, 0 SdLazy, 154 SolverSat, 40 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 58.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 164.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 184 HoareAnnotationTreeSize, 4 FomulaSimplifications, 252 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 562 FormulaSimplificationTreeSizeReductionInter, 14.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 30.6s InterpolantComputationTime, 122 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 114 ConstructedInterpolants, 2 QuantifiedInterpolants, 13232 SizeOfPredicates, 45 NumberOfNonLiveVariables, 682 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 64/104 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 proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...