/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:55:11,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:55:11,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:55:11,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:55:11,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:55:11,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:55:11,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:55:11,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:55:11,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:55:11,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:55:11,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:55:11,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:55:11,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:55:11,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:55:11,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:55:11,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:55:11,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:55:11,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:55:11,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:55:11,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:55:11,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:55:11,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:55:11,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:55:11,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:55:11,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:55:11,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:55:11,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:55:11,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:55:11,347 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 07:55:11,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:55:11,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:55:11,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:55:11,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:55:11,410 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:55:11,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:55:11,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:55:11,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:55:11,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:55:11,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:55:11,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:55:11,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:55:11,413 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:55:11,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:55:11,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:55:11,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:55:11,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:55:11,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:55:11,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:55:11,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:55:11,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:55:11,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:55:11,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:55:11,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:55:11,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:55:11,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:55:11,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:55:11,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:55:11,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:55:11,883 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:55:11,884 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:55:11,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound20.c [2020-12-23 07:55:11,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2058377e4/ec1139e8b4c04e3dbe33cd34d0d49479/FLAG1ad696750 [2020-12-23 07:55:12,545 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:55:12,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound20.c [2020-12-23 07:55:12,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2058377e4/ec1139e8b4c04e3dbe33cd34d0d49479/FLAG1ad696750 [2020-12-23 07:55:12,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2058377e4/ec1139e8b4c04e3dbe33cd34d0d49479 [2020-12-23 07:55:12,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:55:12,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:55:12,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:55:12,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:55:12,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:55:12,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:55:12" (1/1) ... [2020-12-23 07:55:12,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9041c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:12, skipping insertion in model container [2020-12-23 07:55:12,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:55:12" (1/1) ... [2020-12-23 07:55:12,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:55:12,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:55:13,108 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound20.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:55:13,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:55:13,142 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:55:13,156 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound20.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:55:13,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:55:13,185 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:55:13,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13 WrapperNode [2020-12-23 07:55:13,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:55:13,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:55:13,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:55:13,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:55:13,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13" (1/1) ... [2020-12-23 07:55:13,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13" (1/1) ... [2020-12-23 07:55:13,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:55:13,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:55:13,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:55:13,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:55:13,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13" (1/1) ... [2020-12-23 07:55:13,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13" (1/1) ... [2020-12-23 07:55:13,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13" (1/1) ... [2020-12-23 07:55:13,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13" (1/1) ... [2020-12-23 07:55:13,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13" (1/1) ... [2020-12-23 07:55:13,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13" (1/1) ... [2020-12-23 07:55:13,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13" (1/1) ... [2020-12-23 07:55:13,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:55:13,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:55:13,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:55:13,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:55:13,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13" (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 07:55:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:55:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:55:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:55:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:55:13,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:55:13,906 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-23 07:55:13,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:13 BoogieIcfgContainer [2020-12-23 07:55:13,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:55:13,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:55:13,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:55:13,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:55:13,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:55:12" (1/3) ... [2020-12-23 07:55:13,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6411e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:55:13, skipping insertion in model container [2020-12-23 07:55:13,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:13" (2/3) ... [2020-12-23 07:55:13,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6411e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:55:13, skipping insertion in model container [2020-12-23 07:55:13,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:13" (3/3) ... [2020-12-23 07:55:13,919 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound20.c [2020-12-23 07:55:13,927 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:55:13,932 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:55:13,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:55:13,988 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:55:13,988 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:55:13,988 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:55:13,988 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:55:13,988 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:55:13,989 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:55:13,989 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:55:13,989 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:55:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-23 07:55:14,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:55:14,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:14,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:14,017 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:14,024 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 07:55:14,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:14,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129252798] [2020-12-23 07:55:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:14,211 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 07:55:14,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129252798] [2020-12-23 07:55:14,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:14,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:55:14,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094542166] [2020-12-23 07:55:14,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:55:14,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:14,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:55:14,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:55:14,241 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-23 07:55:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:14,266 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-23 07:55:14,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:55:14,267 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:55:14,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:14,278 INFO L225 Difference]: With dead ends: 83 [2020-12-23 07:55:14,278 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 07:55:14,282 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 07:55:14,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 07:55:14,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-23 07:55:14,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:55:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-23 07:55:14,327 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-23 07:55:14,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:14,328 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-23 07:55:14,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:55:14,328 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-23 07:55:14,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:55:14,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:14,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:14,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:55:14,330 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 07:55:14,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:14,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137948819] [2020-12-23 07:55:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:14,514 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 07:55:14,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137948819] [2020-12-23 07:55:14,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:14,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:14,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973915758] [2020-12-23 07:55:14,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:14,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:14,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:14,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:14,519 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-23 07:55:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:14,631 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-23 07:55:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:14,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 07:55:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:14,633 INFO L225 Difference]: With dead ends: 58 [2020-12-23 07:55:14,633 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:55:14,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:14,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:55:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-23 07:55:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:55:14,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 07:55:14,643 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-23 07:55:14,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:14,644 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 07:55:14,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:14,644 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 07:55:14,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:55:14,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:14,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:14,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:55:14,645 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:14,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:14,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-23 07:55:14,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:14,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702211173] [2020-12-23 07:55:14,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:14,813 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 07:55:14,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702211173] [2020-12-23 07:55:14,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:14,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:14,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892403193] [2020-12-23 07:55:14,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:14,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:14,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:14,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:14,817 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-23 07:55:14,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:14,895 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-23 07:55:14,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:14,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 07:55:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:14,897 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:55:14,898 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:55:14,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 07:55:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:55:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:55:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:55:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-23 07:55:14,907 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-23 07:55:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:14,907 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-23 07:55:14,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-23 07:55:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:55:14,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:14,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:14,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:55:14,909 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:14,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:14,910 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2020-12-23 07:55:14,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:14,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298039039] [2020-12-23 07:55:14,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:14,933 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:14,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955391026] [2020-12-23 07:55:14,934 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 07:55:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:15,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:55:15,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:15,151 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 07:55:15,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298039039] [2020-12-23 07:55:15,152 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:15,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955391026] [2020-12-23 07:55:15,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:15,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:55:15,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746302129] [2020-12-23 07:55:15,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:15,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:15,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:15,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:15,155 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 7 states. [2020-12-23 07:55:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:15,462 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-23 07:55:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:55:15,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-23 07:55:15,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:15,465 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:55:15,465 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:55:15,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:55:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:55:15,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-23 07:55:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:55:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-23 07:55:15,478 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-23 07:55:15,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:15,479 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-23 07:55:15,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:15,479 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-23 07:55:15,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:55:15,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:15,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:15,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:15,695 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:15,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:15,697 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2020-12-23 07:55:15,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:15,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459560866] [2020-12-23 07:55:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:15,725 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:15,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706166991] [2020-12-23 07:55:15,726 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 07:55:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:15,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:55:15,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:15,914 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 07:55:15,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459560866] [2020-12-23 07:55:15,915 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:15,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706166991] [2020-12-23 07:55:15,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:15,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:55:15,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423502863] [2020-12-23 07:55:15,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:15,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:15,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:15,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:15,918 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-12-23 07:55:16,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:16,058 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-12-23 07:55:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:55:16,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-23 07:55:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:16,060 INFO L225 Difference]: With dead ends: 67 [2020-12-23 07:55:16,060 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:55:16,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:55:16,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-23 07:55:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 07:55:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-23 07:55:16,076 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 18 [2020-12-23 07:55:16,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:16,077 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-23 07:55:16,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:16,080 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-23 07:55:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:55:16,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:16,081 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:16,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:16,283 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:16,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:16,284 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2020-12-23 07:55:16,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:16,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85262410] [2020-12-23 07:55:16,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:16,312 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:16,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406804402] [2020-12-23 07:55:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:16,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:55:16,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:16,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85262410] [2020-12-23 07:55:16,771 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:16,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406804402] [2020-12-23 07:55:16,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:16,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:55:16,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412429454] [2020-12-23 07:55:16,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:55:16,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:55:16,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:16,774 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 11 states. [2020-12-23 07:55:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:17,489 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-12-23 07:55:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:55:17,489 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-12-23 07:55:17,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:17,491 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:55:17,491 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:55:17,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:55:17,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:55:17,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-12-23 07:55:17,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 07:55:17,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-12-23 07:55:17,503 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 22 [2020-12-23 07:55:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:17,503 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-12-23 07:55:17,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:55:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-12-23 07:55:17,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:55:17,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:17,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:17,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:17,713 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:17,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:17,714 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2020-12-23 07:55:17,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:17,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400383496] [2020-12-23 07:55:17,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:17,732 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:17,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028655510] [2020-12-23 07:55:17,732 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 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 07:55:18,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:18,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:18,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-23 07:55:18,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:19,290 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:55:19,643 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug.