/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/geo3-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:49:40,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:49:40,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:49:40,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:49:40,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:49:40,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:49:40,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:49:40,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:49:40,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:49:40,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:49:40,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:49:40,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:49:40,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:49:40,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:49:40,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:49:40,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:49:40,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:49:40,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:49:40,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:49:40,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:49:40,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:49:40,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:49:40,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:49:40,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:49:40,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:49:40,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:49:40,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:49:40,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:49:40,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:49:40,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:49:40,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:49:40,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:49:40,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:49:40,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:49:40,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:49:40,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:49:40,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:49:40,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:49:40,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:49:40,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:49:40,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:49:40,683 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:49:40,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:49:40,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:49:40,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:49:40,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:49:40,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:49:40,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:49:40,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:49:40,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:49:40,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:49:40,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:49:40,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:49:40,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:49:40,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:49:40,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:49:40,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:49:40,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:49:40,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:49:40,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:49:40,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:49:40,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:49:40,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:49:41,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:49:41,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:49:41,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:49:41,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:49:41,188 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:49:41,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound5.c [2020-12-23 07:49:41,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e915dbc7a/917b775cc301475e8b15db68f7275df0/FLAGca226d1e8 [2020-12-23 07:49:42,077 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:49:42,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound5.c [2020-12-23 07:49:42,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e915dbc7a/917b775cc301475e8b15db68f7275df0/FLAGca226d1e8 [2020-12-23 07:49:42,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e915dbc7a/917b775cc301475e8b15db68f7275df0 [2020-12-23 07:49:42,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:49:42,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:49:42,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:49:42,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:49:42,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:49:42,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:49:42" (1/1) ... [2020-12-23 07:49:42,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efb312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42, skipping insertion in model container [2020-12-23 07:49:42,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:49:42" (1/1) ... [2020-12-23 07:49:42,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:49:42,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:49:42,640 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/geo3-ll_unwindbound5.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~a~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[~az~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,] [2020-12-23 07:49:42,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:49:42,671 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:49:42,685 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/geo3-ll_unwindbound5.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~a~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[~az~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,] [2020-12-23 07:49:42,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:49:42,709 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:49:42,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42 WrapperNode [2020-12-23 07:49:42,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:49:42,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:49:42,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:49:42,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:49:42,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42" (1/1) ... [2020-12-23 07:49:42,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42" (1/1) ... [2020-12-23 07:49:42,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:49:42,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:49:42,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:49:42,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:49:42,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42" (1/1) ... [2020-12-23 07:49:42,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42" (1/1) ... [2020-12-23 07:49:42,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42" (1/1) ... [2020-12-23 07:49:42,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42" (1/1) ... [2020-12-23 07:49:42,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42" (1/1) ... [2020-12-23 07:49:42,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42" (1/1) ... [2020-12-23 07:49:42,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42" (1/1) ... [2020-12-23 07:49:42,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:49:42,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:49:42,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:49:42,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:49:42,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:49:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:49:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:49:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:49:42,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:49:43,183 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:49:43,184 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-23 07:49:43,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:49:43 BoogieIcfgContainer [2020-12-23 07:49:43,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:49:43,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:49:43,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:49:43,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:49:43,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:49:42" (1/3) ... [2020-12-23 07:49:43,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acd10d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:49:43, skipping insertion in model container [2020-12-23 07:49:43,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:42" (2/3) ... [2020-12-23 07:49:43,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acd10d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:49:43, skipping insertion in model container [2020-12-23 07:49:43,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:49:43" (3/3) ... [2020-12-23 07:49:43,198 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound5.c [2020-12-23 07:49:43,207 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:49:43,213 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:49:43,251 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:49:43,306 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:49:43,306 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:49:43,307 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:49:43,307 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:49:43,307 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:49:43,307 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:49:43,307 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:49:43,307 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:49:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-23 07:49:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 07:49:43,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:49:43,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 07:49:43,345 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:49:43,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:49:43,354 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-23 07:49:43,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:49:43,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472077756] [2020-12-23 07:49:43,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:49:43,533 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:49:43,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380337648] [2020-12-23 07:49:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:49:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:49:43,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 07:49:43,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:49:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:49:43,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472077756] [2020-12-23 07:49:43,868 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:49:43,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380337648] [2020-12-23 07:49:43,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:49:43,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:49:43,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780644766] [2020-12-23 07:49:43,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:49:43,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:49:43,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:49:43,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:49:43,898 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-12-23 07:49:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:49:44,015 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-12-23 07:49:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:49:44,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 07:49:44,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:49:44,027 INFO L225 Difference]: With dead ends: 44 [2020-12-23 07:49:44,027 INFO L226 Difference]: Without dead ends: 19 [2020-12-23 07:49:44,032 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 [2020-12-23 07:49:44,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-23 07:49:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-12-23 07:49:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 07:49:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-23 07:49:44,077 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2020-12-23 07:49:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:49:44,078 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-23 07:49:44,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:49:44,078 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-23 07:49:44,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:49:44,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:49:44,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:49:44,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-23 07:49:44,294 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:49:44,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:49:44,296 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2020-12-23 07:49:44,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:49:44,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519274764] [2020-12-23 07:49:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:49:44,313 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:49:44,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067094517] [2020-12-23 07:49:44,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:49:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:49:44,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:49:44,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:49:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:49:44,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519274764] [2020-12-23 07:49:44,561 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:49:44,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067094517] [2020-12-23 07:49:44,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:49:44,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:49:44,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752172930] [2020-12-23 07:49:44,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:49:44,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:49:44,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:49:44,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:49:44,566 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 7 states. [2020-12-23 07:49:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:49:44,776 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-12-23 07:49:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:49:44,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-12-23 07:49:44,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:49:44,780 INFO L225 Difference]: With dead ends: 29 [2020-12-23 07:49:44,780 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 07:49:44,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:49:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 07:49:44,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-12-23 07:49:44,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:49:44,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-23 07:49:44,801 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-12-23 07:49:44,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:49:44,802 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-23 07:49:44,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:49:44,802 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-23 07:49:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:49:44,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:49:44,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2020-12-23 07:49:45,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:49:45,008 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:49:45,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:49:45,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1778536670, now seen corresponding path program 2 times [2020-12-23 07:49:45,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:49:45,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829799223] [2020-12-23 07:49:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:49:45,031 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:49:45,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360709256] [2020-12-23 07:49:45,032 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 [2020-12-23 07:49:45,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:49:45,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:49:45,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:49:45,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:50:05,972 WARN L197 SmtUtils]: Spent 18.54 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-23 07:50:12,043 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 16 [2020-12-23 07:50:16,271 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-23 07:50:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:50:18,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829799223] [2020-12-23 07:50:18,320 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:50:18,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360709256] [2020-12-23 07:50:18,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:50:18,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:50:18,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143503420] [2020-12-23 07:50:18,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:50:18,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:18,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:50:18,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=48, Unknown=5, NotChecked=0, Total=72 [2020-12-23 07:50:18,323 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2020-12-23 07:50:59,667 WARN L197 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2020-12-23 07:51:01,770 WARN L197 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-23 07:51:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:08,034 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-12-23 07:51:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:51:08,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-23 07:51:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:08,036 INFO L225 Difference]: With dead ends: 33 [2020-12-23 07:51:08,036 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 07:51:08,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 60.0s TimeCoverageRelationStatistics Valid=34, Invalid=89, Unknown=9, NotChecked=0, Total=132 [2020-12-23 07:51:08,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 07:51:08,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-12-23 07:51:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 07:51:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-23 07:51:08,043 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2020-12-23 07:51:08,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:08,043 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-23 07:51:08,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:51:08,043 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-23 07:51:08,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:51:08,044 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:08,044 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:08,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:08,258 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:08,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:08,259 INFO L82 PathProgramCache]: Analyzing trace with hash 699894435, now seen corresponding path program 1 times [2020-12-23 07:51:08,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:08,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733638149] [2020-12-23 07:51:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:08,277 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:08,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524383493] [2020-12-23 07:51:08,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:08,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:51:08,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:08,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733638149] [2020-12-23 07:51:08,397 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:08,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524383493] [2020-12-23 07:51:08,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:08,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:51:08,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538128431] [2020-12-23 07:51:08,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:51:08,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:08,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:51:08,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:08,400 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-12-23 07:51:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:08,453 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-12-23 07:51:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:51:08,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:51:08,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:08,455 INFO L225 Difference]: With dead ends: 27 [2020-12-23 07:51:08,455 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 07:51:08,456 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 [2020-12-23 07:51:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 07:51:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-23 07:51:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 07:51:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-23 07:51:08,461 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2020-12-23 07:51:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:08,462 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-23 07:51:08,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:51:08,462 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-23 07:51:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:51:08,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:08,463 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:08,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:08,678 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:08,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:08,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1664485700, now seen corresponding path program 1 times [2020-12-23 07:51:08,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:08,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685323043] [2020-12-23 07:51:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:08,690 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:08,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386465087] [2020-12-23 07:51:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:08,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:51:08,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 07:51:08,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685323043] [2020-12-23 07:51:08,812 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:08,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386465087] [2020-12-23 07:51:08,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:08,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:51:08,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934353570] [2020-12-23 07:51:08,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:51:08,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:51:08,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:51:08,815 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-12-23 07:51:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:12,896 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-12-23 07:51:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:51:12,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 07:51:12,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:12,898 INFO L225 Difference]: With dead ends: 27 [2020-12-23 07:51:12,898 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 07:51:12,899 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 [2020-12-23 07:51:12,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 07:51:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-23 07:51:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 07:51:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-23 07:51:12,904 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-12-23 07:51:12,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:12,905 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-23 07:51:12,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:51:12,906 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-23 07:51:12,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:51:12,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:12,907 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2020-12-23 07:51:13,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:13,110 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:13,111 INFO L82 PathProgramCache]: Analyzing trace with hash -58338866, now seen corresponding path program 3 times [2020-12-23 07:51:13,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:13,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165762572] [2020-12-23 07:51:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:13,122 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:13,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071650852] [2020-12-23 07:51:13,123 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 [2020-12-23 07:51:13,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:51:13,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:51:13,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:51:13,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:13,369 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:51:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 07:51:13,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165762572] [2020-12-23 07:51:13,417 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:13,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071650852] [2020-12-23 07:51:13,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:13,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:51:13,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443424141] [2020-12-23 07:51:13,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:51:13,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:13,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:51:13,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:13,419 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2020-12-23 07:51:30,931 WARN L197 SmtUtils]: Spent 11.78 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-23 07:51:39,127 WARN L197 SmtUtils]: Spent 8.18 s on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 07:51:43,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:43,762 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-12-23 07:51:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:51:43,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-23 07:51:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:43,764 INFO L225 Difference]: With dead ends: 23 [2020-12-23 07:51:43,764 INFO L226 Difference]: Without dead ends: 21 [2020-12-23 07:51:43,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:51:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-23 07:51:43,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-12-23 07:51:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:51:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-23 07:51:43,777 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2020-12-23 07:51:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:43,778 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-23 07:51:43,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:51:43,778 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-23 07:51:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:51:43,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:43,779 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:43,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:43,981 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:43,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:43,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1808548489, now seen corresponding path program 2 times [2020-12-23 07:51:43,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:43,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437196388] [2020-12-23 07:51:43,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:43,999 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:43,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195497095] [2020-12-23 07:51:44,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:44,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:51:44,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:51:44,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:51:44,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:44,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437196388] [2020-12-23 07:51:44,155 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:44,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195497095] [2020-12-23 07:51:44,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:44,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:51:44,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878169197] [2020-12-23 07:51:44,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:51:44,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:44,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:51:44,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:51:44,157 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2020-12-23 07:51:44,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:44,246 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-12-23 07:51:44,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:51:44,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-23 07:51:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:44,248 INFO L225 Difference]: With dead ends: 28 [2020-12-23 07:51:44,248 INFO L226 Difference]: Without dead ends: 24 [2020-12-23 07:51:44,248 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 [2020-12-23 07:51:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-23 07:51:44,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-23 07:51:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 07:51:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-12-23 07:51:44,256 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 19 [2020-12-23 07:51:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:44,257 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-12-23 07:51:44,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:51:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-12-23 07:51:44,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 07:51:44,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:44,258 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:44,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:44,472 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:44,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:44,473 INFO L82 PathProgramCache]: Analyzing trace with hash 754083403, now seen corresponding path program 3 times [2020-12-23 07:51:44,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:44,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671417372] [2020-12-23 07:51:44,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:44,484 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:44,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747672442] [2020-12-23 07:51:44,485 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 [2020-12-23 07:51:44,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:51:44,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:51:44,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:51:44,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:45,844 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:51:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-23 07:51:45,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671417372] [2020-12-23 07:51:45,885 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:45,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747672442] [2020-12-23 07:51:45,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:45,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:51:45,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096548663] [2020-12-23 07:51:45,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:51:45,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:45,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:51:45,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:45,887 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2020-12-23 07:52:02,120 WARN L197 SmtUtils]: Spent 12.13 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-23 07:52:16,369 WARN L197 SmtUtils]: Spent 14.23 s on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 07:52:16,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:16,390 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-23 07:52:16,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:52:16,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-23 07:52:16,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:16,393 INFO L225 Difference]: With dead ends: 24 [2020-12-23 07:52:16,393 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:52:16,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:52:16,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:52:16,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:52:16,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:52:16,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:52:16,394 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-12-23 07:52:16,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:16,395 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:52:16,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:52:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:52:16,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:52:16,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-23 07:52:16,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:52:19,039 WARN L197 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-12-23 07:52:29,372 WARN L197 SmtUtils]: Spent 10.33 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-23 07:52:29,375 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:52:29,375 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:52:29,375 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:52:29,376 INFO L185 CegarLoopUtils]: At program point L15-2(lines 37 38) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (<= ~counter~0 1) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~az~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0))) (and .cse0 (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~a~0) (+ (* ULTIMATE.start_main_~az~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) (let ((.cse3 (= ULTIMATE.start_main_~z~0 0))) (or (let ((.cse2 (+ (* ULTIMATE.start_main_~a~0 (- 1)) ULTIMATE.start_main_~x~0))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (let ((.cse1 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ .cse1 (* ULTIMATE.start_main_~az~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (+ (* .cse1 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0))) (not .cse3) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0))) (and (= ULTIMATE.start_main_~y~0 0) .cse3)))))) [2020-12-23 07:52:29,376 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:52:29,376 INFO L192 CegarLoopUtils]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2020-12-23 07:52:29,376 INFO L189 CegarLoopUtils]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2020-12-23 07:52:29,377 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:52:29,377 INFO L185 CegarLoopUtils]: At program point L34-3(lines 34 43) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0))) (or (let ((.cse2 (= ULTIMATE.start_main_~z~0 0))) (let ((.cse1 (let ((.cse4 (+ (* ULTIMATE.start_main_~a~0 (- 1)) ULTIMATE.start_main_~x~0))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (let ((.cse3 (div .cse4 ULTIMATE.start_main_~z~0))) (= (+ .cse3 (* ULTIMATE.start_main_~az~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (+ (* .cse3 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0))) (not .cse2) (= (mod .cse4 ULTIMATE.start_main_~z~0) 0))))) (and (or .cse0 .cse1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or .cse1 (and (= ULTIMATE.start_main_~y~0 0) .cse2))))) (and .cse0 (<= ~counter~0 0) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~az~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0))))) [2020-12-23 07:52:29,377 INFO L189 CegarLoopUtils]: For program point L34-4(lines 34 43) no Hoare annotation was computed. [2020-12-23 07:52:29,377 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:52:29,377 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:52:29,377 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:52:29,378 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:52:29,378 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:52:29,378 INFO L192 CegarLoopUtils]: At program point L45(lines 22 46) the Hoare annotation is: true [2020-12-23 07:52:29,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:52:29 BoogieIcfgContainer [2020-12-23 07:52:29,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:52:29,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:52:29,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:52:29,407 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:52:29,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:49:43" (3/4) ... [2020-12-23 07:52:29,411 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 07:52:29,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-23 07:52:29,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 07:52:29,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:52:29,430 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:52:29,501 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo3-ll_unwindbound5.c-witness.graphml [2020-12-23 07:52:29,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:52:29,505 INFO L168 Benchmark]: Toolchain (without parser) took 167074.41 ms. Allocated memory is still 162.5 MB. Free memory was 138.0 MB in the beginning and 94.1 MB in the end (delta: 43.9 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:29,506 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 162.5 MB. Free memory is still 134.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:52:29,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.21 ms. Allocated memory is still 162.5 MB. Free memory was 137.9 MB in the beginning and 128.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:29,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.98 ms. Allocated memory is still 162.5 MB. Free memory was 128.0 MB in the beginning and 126.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:29,507 INFO L168 Benchmark]: Boogie Preprocessor took 24.36 ms. Allocated memory is still 162.5 MB. Free memory was 126.4 MB in the beginning and 125.5 MB in the end (delta: 979.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:29,508 INFO L168 Benchmark]: RCFGBuilder took 412.08 ms. Allocated memory is still 162.5 MB. Free memory was 125.5 MB in the beginning and 144.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:29,510 INFO L168 Benchmark]: TraceAbstraction took 166213.61 ms. Allocated memory is still 162.5 MB. Free memory was 144.0 MB in the beginning and 97.3 MB in the end (delta: 46.7 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:29,511 INFO L168 Benchmark]: Witness Printer took 98.82 ms. Allocated memory is still 162.5 MB. Free memory was 97.3 MB in the beginning and 94.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:29,517 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 162.5 MB. Free memory is still 134.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.21 ms. Allocated memory is still 162.5 MB. Free memory was 137.9 MB in the beginning and 128.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.98 ms. Allocated memory is still 162.5 MB. Free memory was 128.0 MB in the beginning and 126.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.36 ms. Allocated memory is still 162.5 MB. Free memory was 126.4 MB in the beginning and 125.5 MB in the end (delta: 979.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 412.08 ms. Allocated memory is still 162.5 MB. Free memory was 125.5 MB in the beginning and 144.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 166213.61 ms. Allocated memory is still 162.5 MB. Free memory was 144.0 MB in the beginning and 97.3 MB in the end (delta: 46.7 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. * Witness Printer took 98.82 ms. Allocated memory is still 162.5 MB. Free memory was 97.3 MB in the beginning and 94.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 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: (((a == x || (((y % z == 0 && (a * -1 + x) / z + az * (y / z) == (a * -1 + x) / z * z + a) && !(z == 0)) && (a * -1 + x) % z == 0)) && 1 == cond) && ((((y % z == 0 && (a * -1 + x) / z + az * (y / z) == (a * -1 + x) / z * z + a) && !(z == 0)) && (a * -1 + x) % z == 0) || (y == 0 && z == 0))) || (((a == x && counter <= 0) && y == 1) && az == a * z) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((counter <= 1 && a == x) && 1 == cond) && y == 1) && az == a * z) || ((1 == cond && z * x + a == az * y + x) && ((((y % z == 0 && (a * -1 + x) / z + az * (y / z) == (a * -1 + x) / z * z + a) && !(z == 0)) && (a * -1 + x) % z == 0) || (y == 0 && z == 0))) - InvariantResult [Line: 22]: 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: 153.3s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 115.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 12.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 92 SDslu, 196 SDs, 0 SdLazy, 178 SolverSat, 41 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 40.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 108.3s 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, 208 HoareAnnotationTreeSize, 4 FomulaSimplifications, 56 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 686 FormulaSimplificationTreeSizeReductionInter, 12.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 35.2s InterpolantComputationTime, 122 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 14194 SizeOfPredicates, 58 NumberOfNonLiveVariables, 730 ConjunctsInSsa, 144 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...