/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_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:50:43,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:50:43,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:50:43,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:50:43,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:50:43,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:50:43,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:50:43,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:50:43,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:50:43,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:50:43,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:50:43,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:50:43,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:50:43,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:50:43,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:50:43,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:50:43,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:50:43,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:50:43,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:50:43,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:50:43,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:50:43,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:50:43,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:50:43,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:50:43,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:50:43,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:50:43,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:50:43,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:50:43,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:50:43,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:50:43,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:50:43,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:50:43,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:50:43,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:50:43,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:50:43,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:50:43,924 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 07:50:43,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:50:43,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:50:43,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:50:43,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:50:43,953 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:50:43,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:50:43,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:50:43,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:50:43,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:50:43,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:50:43,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:50:43,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:50:43,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:50:43,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:50:43,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:50:43,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:50:43,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:50:43,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:50:43,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:50:43,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:50:43,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:50:43,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:50:43,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:50:43,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:50:43,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:50:43,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:50:44,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:50:44,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:50:44,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:50:44,425 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:50:44,426 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:50:44,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound5.c [2020-12-23 07:50:44,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1fa3fd414/f2b425b76adf482d8dc20fd9acb5d328/FLAG6a705e5a2 [2020-12-23 07:50:45,098 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:50:45,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound5.c [2020-12-23 07:50:45,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1fa3fd414/f2b425b76adf482d8dc20fd9acb5d328/FLAG6a705e5a2 [2020-12-23 07:50:45,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1fa3fd414/f2b425b76adf482d8dc20fd9acb5d328 [2020-12-23 07:50:45,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:50:45,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:50:45,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:50:45,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:50:45,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:50:45,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:50:45" (1/1) ... [2020-12-23 07:50:45,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d45929d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45, skipping insertion in model container [2020-12-23 07:50:45,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:50:45" (1/1) ... [2020-12-23 07:50:45,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:50:45,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:50:45,654 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_valuebound5.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 07:50:45,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:50:45,684 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:50:45,698 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_valuebound5.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 07:50:45,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:50:45,722 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:50:45,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45 WrapperNode [2020-12-23 07:50:45,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:50:45,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:50:45,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:50:45,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:50:45,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45" (1/1) ... [2020-12-23 07:50:45,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45" (1/1) ... [2020-12-23 07:50:45,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:50:45,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:50:45,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:50:45,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:50:45,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45" (1/1) ... [2020-12-23 07:50:45,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45" (1/1) ... [2020-12-23 07:50:45,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45" (1/1) ... [2020-12-23 07:50:45,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45" (1/1) ... [2020-12-23 07:50:45,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45" (1/1) ... [2020-12-23 07:50:45,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45" (1/1) ... [2020-12-23 07:50:45,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45" (1/1) ... [2020-12-23 07:50:45,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:50:45,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:50:45,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:50:45,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:50:45,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:50:45,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:50:45,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:50:45,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:50:45,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:50:46,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:50:46,203 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-23 07:50:46,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:50:46 BoogieIcfgContainer [2020-12-23 07:50:46,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:50:46,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:50:46,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:50:46,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:50:46,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:50:45" (1/3) ... [2020-12-23 07:50:46,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123d3446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:50:46, skipping insertion in model container [2020-12-23 07:50:46,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:45" (2/3) ... [2020-12-23 07:50:46,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123d3446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:50:46, skipping insertion in model container [2020-12-23 07:50:46,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:50:46" (3/3) ... [2020-12-23 07:50:46,226 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound5.c [2020-12-23 07:50:46,241 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:50:46,251 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:50:46,297 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:50:46,353 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:50:46,353 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:50:46,353 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:50:46,353 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:50:46,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:50:46,354 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:50:46,354 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:50:46,354 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:50:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-23 07:50:46,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:50:46,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:46,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:50:46,377 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:46,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:46,383 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 07:50:46,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:46,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700610302] [2020-12-23 07:50:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:50:46,564 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 07:50:46,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700610302] [2020-12-23 07:50:46,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:50:46,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:50:46,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041190113] [2020-12-23 07:50:46,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:50:46,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:46,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:50:46,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:50:46,591 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-23 07:50:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:50:46,610 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-12-23 07:50:46,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:50:46,612 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:50:46,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:50:46,622 INFO L225 Difference]: With dead ends: 39 [2020-12-23 07:50:46,622 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 07:50:46,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:50:46,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 07:50:46,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 07:50:46,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 07:50:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-23 07:50:46,662 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-12-23 07:50:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:50:46,663 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-23 07:50:46,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:50:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-23 07:50:46,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:50:46,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:46,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:50:46,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:50:46,664 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:46,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:46,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 07:50:46,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:46,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232722174] [2020-12-23 07:50:46,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:46,691 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:50:46,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403155226] [2020-12-23 07:50:46,692 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 07:50:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:50:46,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:50:46,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:50:46,964 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 07:50:46,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232722174] [2020-12-23 07:50:46,965 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:50:46,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403155226] [2020-12-23 07:50:46,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:50:46,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:50:46,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096564760] [2020-12-23 07:50:46,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:50:46,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:46,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:50:46,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:50:46,969 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-12-23 07:50:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:50:47,080 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-12-23 07:50:47,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:50:47,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 07:50:47,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:50:47,081 INFO L225 Difference]: With dead ends: 27 [2020-12-23 07:50:47,081 INFO L226 Difference]: Without dead ends: 21 [2020-12-23 07:50:47,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:50:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-23 07:50:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-12-23 07:50:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:50:47,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-23 07:50:47,089 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2020-12-23 07:50:47,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:50:47,090 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-23 07:50:47,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:50:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-23 07:50:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:50:47,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:47,091 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:50:47,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:50:47,303 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:47,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:47,304 INFO L82 PathProgramCache]: Analyzing trace with hash -937492348, now seen corresponding path program 1 times [2020-12-23 07:50:47,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:47,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464127621] [2020-12-23 07:50:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:47,333 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:50:47,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780194416] [2020-12-23 07:50:47,334 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 07:50:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:50:47,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 07:50:47,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:50:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:50:47,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464127621] [2020-12-23 07:50:47,624 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:50:47,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780194416] [2020-12-23 07:50:47,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:50:47,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:50:47,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315180906] [2020-12-23 07:50:47,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:50:47,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:47,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:50:47,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:50:47,627 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2020-12-23 07:50:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:50:47,992 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-12-23 07:50:47,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:50:47,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-23 07:50:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:50:47,994 INFO L225 Difference]: With dead ends: 30 [2020-12-23 07:50:47,994 INFO L226 Difference]: Without dead ends: 24 [2020-12-23 07:50:47,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:50:47,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-23 07:50:48,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-12-23 07:50:48,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 07:50:48,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-23 07:50:48,002 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2020-12-23 07:50:48,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:50:48,002 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-23 07:50:48,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:50:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-23 07:50:48,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:50:48,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:48,004 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:50:48,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:48,218 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:48,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:48,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1342734009, now seen corresponding path program 2 times [2020-12-23 07:50:48,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:48,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221922245] [2020-12-23 07:50:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:48,246 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:50:48,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670209593] [2020-12-23 07:50:48,250 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 07:50:48,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:50:48,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:50:48,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:50:48,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:10,046 WARN L197 SmtUtils]: Spent 20.40 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-23 07:51:18,163 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 16 [2020-12-23 07:51:24,293 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-23 07:51:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:26,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221922245] [2020-12-23 07:51:26,334 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:26,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670209593] [2020-12-23 07:51:26,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:26,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:51:26,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884322824] [2020-12-23 07:51:26,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:51:26,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:26,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:51:26,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=49, Unknown=4, NotChecked=0, Total=72 [2020-12-23 07:51:26,337 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-12-23 07:51:50,739 WARN L197 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2020-12-23 07:51:52,796 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-23 07:52:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:06,500 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-12-23 07:52:06,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:52:06,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-23 07:52:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:06,503 INFO L225 Difference]: With dead ends: 33 [2020-12-23 07:52:06,503 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 07:52:06,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 51.1s TimeCoverageRelationStatistics Valid=34, Invalid=91, Unknown=7, NotChecked=0, Total=132 [2020-12-23 07:52:06,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 07:52:06,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2020-12-23 07:52:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 07:52:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-12-23 07:52:06,510 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 17 [2020-12-23 07:52:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:06,510 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-12-23 07:52:06,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:52:06,511 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-12-23 07:52:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:52:06,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:06,512 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:06,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:06,713 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:06,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:06,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1931626151, now seen corresponding path program 1 times [2020-12-23 07:52:06,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:06,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237505934] [2020-12-23 07:52:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:06,732 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:06,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096481323] [2020-12-23 07:52:06,733 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 07:52:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:06,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:52:06,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 07:52:06,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237505934] [2020-12-23 07:52:06,862 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:06,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096481323] [2020-12-23 07:52:06,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:06,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:52:06,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711969000] [2020-12-23 07:52:06,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:52:06,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:06,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:52:06,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:52:06,864 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 5 states. [2020-12-23 07:52:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:10,945 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-12-23 07:52:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:52:10,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-23 07:52:10,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:10,947 INFO L225 Difference]: With dead ends: 25 [2020-12-23 07:52:10,948 INFO L226 Difference]: Without dead ends: 21 [2020-12-23 07:52:10,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 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 07:52:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-23 07:52:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-23 07:52:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-23 07:52:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-12-23 07:52:10,954 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 20 [2020-12-23 07:52:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:10,955 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-12-23 07:52:10,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:52:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-12-23 07:52:10,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:52:10,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:10,956 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:11,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:11,158 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:11,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:11,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1931585436, now seen corresponding path program 3 times [2020-12-23 07:52:11,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:11,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970447081] [2020-12-23 07:52:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:11,193 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:11,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964751012] [2020-12-23 07:52:11,194 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 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 07:52:14,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:52:14,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:52:14,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-23 07:52:14,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:14,570 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-23 07:52:14,821 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-12-23 07:52:21,037 WARN L197 SmtUtils]: Spent 6.12 s on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2020-12-23 07:52:22,647 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-23 07:52:22,705 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,709 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,727 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,749 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,764 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,780 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:52:22,786 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,798 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:52:22,828 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:52:22,869 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,871 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,884 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,895 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:52:22,900 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,911 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:52:22,926 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:22,938 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:52:22,951 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:52:25,045 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:25,060 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:25,070 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:52:25,107 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:52:25,132 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:52:25,148 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:52:42,439 WARN L197 SmtUtils]: Spent 10.47 s on a formula simplification that was a NOOP. DAG size: 42 [2020-12-23 07:52:48,531 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 Int) (ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (let ((.cse0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse2 (+ (* ULTIMATE.start_main_~a~0 (- 1)) ULTIMATE.start_main_~x~0))) (and (<= 0 ULTIMATE.start_main_~z~0) (not (= (+ (* ULTIMATE.start_main_~a~0 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) ULTIMATE.start_main_~a~0))) (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (not (= ULTIMATE.start_main_~z~0 0)) (<= 0 ULTIMATE.start_main_~a~0) (let ((.cse1 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ (* .cse1 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0) (+ .cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0 .cse0)))) (<= ULTIMATE.start_main_~z~0 5) (<= ULTIMATE.start_main_~a~0 5) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0)))) is different from false [2020-12-23 07:52:50,541 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 Int) (ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (let ((.cse0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse2 (+ (* ULTIMATE.start_main_~a~0 (- 1)) ULTIMATE.start_main_~x~0))) (and (<= 0 ULTIMATE.start_main_~z~0) (not (= (+ (* ULTIMATE.start_main_~a~0 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) ULTIMATE.start_main_~a~0))) (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (not (= ULTIMATE.start_main_~z~0 0)) (<= 0 ULTIMATE.start_main_~a~0) (let ((.cse1 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ (* .cse1 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0) (+ .cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0 .cse0)))) (<= ULTIMATE.start_main_~z~0 5) (<= ULTIMATE.start_main_~a~0 5) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0)))) is different from true [2020-12-23 07:52:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 07:52:50,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970447081] [2020-12-23 07:52:50,547 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:50,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964751012] [2020-12-23 07:52:50,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:50,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-23 07:52:50,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310475760] [2020-12-23 07:52:50,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:52:50,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:50,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:52:50,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=131, Unknown=3, NotChecked=24, Total=210 [2020-12-23 07:52:50,552 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 15 states. [2020-12-23 07:53:05,610 WARN L197 SmtUtils]: Spent 14.42 s on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-12-23 07:53:16,099 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-23 07:55:04,009 WARN L197 SmtUtils]: Spent 1.56 m on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-12-23 07:55:21,172 WARN L197 SmtUtils]: Spent 13.07 s on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-12-23 07:55:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:27,252 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-12-23 07:55:27,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:55:27,263 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 20 [2020-12-23 07:55:27,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:27,263 INFO L225 Difference]: With dead ends: 21 [2020-12-23 07:55:27,264 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:55:27,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 167.2s TimeCoverageRelationStatistics Valid=113, Invalid=298, Unknown=13, NotChecked=38, Total=462 [2020-12-23 07:55:27,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:55:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:55:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:55:27,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:55:27,265 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-23 07:55:27,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:27,266 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:55:27,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:55:27,266 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:55:27,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:55:27,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:55:27,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.