/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_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:54:39,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:54:39,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:54:39,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:54:39,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:54:39,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:54:39,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:54:39,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:54:39,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:54:39,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:54:39,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:54:39,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:54:39,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:54:39,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:54:39,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:54:39,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:54:39,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:54:39,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:54:39,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:54:39,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:54:39,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:54:39,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:54:39,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:54:39,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:54:39,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:54:39,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:54:39,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:54:39,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:54:39,320 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 07:54:39,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:54:39,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:54:39,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:54:39,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:54:39,386 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:54:39,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:54:39,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:54:39,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:54:39,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:54:39,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:54:39,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:54:39,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:54:39,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:54:39,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:54:39,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:54:39,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:54:39,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:54:39,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:54:39,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:54:39,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:54:39,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:54:39,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:54:39,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:54:39,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:54:39,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:54:39,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:54:39,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:54:39,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:54:39,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:54:39,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:54:39,887 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:54:39,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c [2020-12-23 07:54:39,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/31c2f00f5/89b80a1df56c4c02ab503dd58ea73cfe/FLAGaceac2207 [2020-12-23 07:54:40,579 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:54:40,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c [2020-12-23 07:54:40,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/31c2f00f5/89b80a1df56c4c02ab503dd58ea73cfe/FLAGaceac2207 [2020-12-23 07:54:40,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/31c2f00f5/89b80a1df56c4c02ab503dd58ea73cfe [2020-12-23 07:54:40,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:54:40,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:54:40,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:54:40,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:54:40,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:54:40,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:40" (1/1) ... [2020-12-23 07:54:40,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176da77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:40, skipping insertion in model container [2020-12-23 07:54:40,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:40" (1/1) ... [2020-12-23 07:54:40,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:54:40,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:54:41,143 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_valuebound10.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 07:54:41,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:54:41,181 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:54:41,198 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_valuebound10.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 07:54:41,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:54:41,232 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:54:41,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41 WrapperNode [2020-12-23 07:54:41,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:54:41,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:54:41,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:54:41,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:54:41,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41" (1/1) ... [2020-12-23 07:54:41,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41" (1/1) ... [2020-12-23 07:54:41,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:54:41,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:54:41,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:54:41,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:54:41,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41" (1/1) ... [2020-12-23 07:54:41,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41" (1/1) ... [2020-12-23 07:54:41,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41" (1/1) ... [2020-12-23 07:54:41,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41" (1/1) ... [2020-12-23 07:54:41,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41" (1/1) ... [2020-12-23 07:54:41,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41" (1/1) ... [2020-12-23 07:54:41,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41" (1/1) ... [2020-12-23 07:54:41,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:54:41,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:54:41,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:54:41,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:54:41,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41" (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 07:54:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:54:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:54:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:54:41,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:54:41,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:54:41,929 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-23 07:54:41,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:41 BoogieIcfgContainer [2020-12-23 07:54:41,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:54:41,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:54:41,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:54:41,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:54:41,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:54:40" (1/3) ... [2020-12-23 07:54:41,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c17f251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:41, skipping insertion in model container [2020-12-23 07:54:41,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:41" (2/3) ... [2020-12-23 07:54:41,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c17f251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:41, skipping insertion in model container [2020-12-23 07:54:41,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:41" (3/3) ... [2020-12-23 07:54:41,969 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound10.c [2020-12-23 07:54:41,981 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:54:41,988 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:54:42,012 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:54:42,062 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:54:42,063 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:54:42,063 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:54:42,063 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:54:42,063 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:54:42,063 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:54:42,064 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:54:42,064 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:54:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-23 07:54:42,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:54:42,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:42,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:42,098 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 07:54:42,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:42,112 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 07:54:42,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:42,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229001716] [2020-12-23 07:54:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:42,376 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 07:54:42,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229001716] [2020-12-23 07:54:42,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:42,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:54:42,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522662770] [2020-12-23 07:54:42,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:54:42,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:42,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:54:42,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:54:42,411 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-23 07:54:42,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:42,444 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-23 07:54:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:54:42,446 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:54:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:42,478 INFO L225 Difference]: With dead ends: 83 [2020-12-23 07:54:42,478 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 07:54:42,484 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 07:54:42,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 07:54:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-23 07:54:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:54:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-23 07:54:42,539 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-23 07:54:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:42,539 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-23 07:54:42,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:54:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-23 07:54:42,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:54:42,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:42,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:42,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:54:42,545 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 07:54:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:42,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 07:54:42,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:42,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538886377] [2020-12-23 07:54:42,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:42,762 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 07:54:42,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538886377] [2020-12-23 07:54:42,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:42,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:54:42,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832053401] [2020-12-23 07:54:42,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:54:42,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:42,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:54:42,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:42,770 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-23 07:54:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:42,980 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-23 07:54:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:54:42,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 07:54:42,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:42,985 INFO L225 Difference]: With dead ends: 58 [2020-12-23 07:54:42,985 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:54:42,987 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 07:54:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:54:43,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-23 07:54:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:54:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 07:54:43,004 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-23 07:54:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:43,005 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 07:54:43,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:54:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 07:54:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:54:43,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:43,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:43,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:54:43,010 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 07:54:43,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:43,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-23 07:54:43,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:43,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923749950] [2020-12-23 07:54:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:43,180 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 07:54:43,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923749950] [2020-12-23 07:54:43,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:43,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:54:43,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215549138] [2020-12-23 07:54:43,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:54:43,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:43,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:54:43,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:43,184 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-23 07:54:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:43,315 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-23 07:54:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:54:43,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 07:54:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:43,317 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:54:43,318 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:54:43,318 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 07:54:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:54:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:54:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:54:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-23 07:54:43,326 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-23 07:54:43,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:43,326 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-23 07:54:43,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:54:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-23 07:54:43,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:54:43,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:43,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:43,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:54:43,328 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 07:54:43,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:43,329 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2020-12-23 07:54:43,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:43,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569580191] [2020-12-23 07:54:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:43,349 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:43,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442139747] [2020-12-23 07:54:43,349 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 07:54:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:43,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:54:43,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:43,649 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 07:54:43,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569580191] [2020-12-23 07:54:43,650 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:43,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442139747] [2020-12-23 07:54:43,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:43,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:54:43,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95478660] [2020-12-23 07:54:43,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:54:43,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:43,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:54:43,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:54:43,653 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 7 states. [2020-12-23 07:54:44,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:44,174 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-23 07:54:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:54:44,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-23 07:54:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:44,178 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:54:44,178 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:54:44,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:54:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:54:44,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-23 07:54:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:54:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-23 07:54:44,199 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-23 07:54:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:44,199 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-23 07:54:44,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:54:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-23 07:54:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:54:44,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:44,200 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 07:54:44,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:44,402 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 07:54:44,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:44,404 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2020-12-23 07:54:44,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:44,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50424008] [2020-12-23 07:54:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:44,421 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:44,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21058564] [2020-12-23 07:54:44,422 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 07:54:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:44,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:54:44,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:44,655 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 07:54:44,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50424008] [2020-12-23 07:54:44,656 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:44,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21058564] [2020-12-23 07:54:44,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:44,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:54:44,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509645114] [2020-12-23 07:54:44,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:54:44,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:44,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:54:44,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:44,659 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-12-23 07:54:44,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:44,859 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-12-23 07:54:44,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:54:44,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-23 07:54:44,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:44,861 INFO L225 Difference]: With dead ends: 67 [2020-12-23 07:54:44,861 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:54:44,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:54:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:54:44,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-23 07:54:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 07:54:44,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-23 07:54:44,872 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 18 [2020-12-23 07:54:44,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:44,873 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-23 07:54:44,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:54:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-23 07:54:44,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:54:44,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:44,874 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 07:54:45,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:45,092 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 07:54:45,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:45,094 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2020-12-23 07:54:45,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:45,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478031243] [2020-12-23 07:54:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:45,110 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:45,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001561069] [2020-12-23 07:54:45,111 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 07:54:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:45,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:54:45,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:45,882 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 07:54:45,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478031243] [2020-12-23 07:54:45,882 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:45,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001561069] [2020-12-23 07:54:45,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:45,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:54:45,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586760114] [2020-12-23 07:54:45,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:54:45,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:45,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:54:45,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:54:45,886 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 11 states. [2020-12-23 07:54:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:46,681 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-12-23 07:54:46,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:54:46,682 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-12-23 07:54:46,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:46,683 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:54:46,683 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:54:46,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:54:46,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:54:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-12-23 07:54:46,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 07:54:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-12-23 07:54:46,707 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 22 [2020-12-23 07:54:46,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:46,707 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-12-23 07:54:46,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:54:46,708 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-12-23 07:54:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:54:46,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:46,709 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 07:54:46,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:46,914 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 07:54:46,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:46,915 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2020-12-23 07:54:46,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:46,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483764658] [2020-12-23 07:54:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:46,930 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:46,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300315264] [2020-12-23 07:54:46,930 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 07:54:47,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:54:47,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:47,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-23 07:54:47,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:48,069 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:48,361 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:54:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:48,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483764658] [2020-12-23 07:54:48,704 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:48,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300315264] [2020-12-23 07:54:48,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:48,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:54:48,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875286473] [2020-12-23 07:54:48,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:54:48,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:48,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:54:48,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:54:48,707 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 15 states. [2020-12-23 07:54:49,677 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-12-23 07:54:49,890 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-12-23 07:54:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:51,241 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-12-23 07:54:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:54:51,242 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-12-23 07:54:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:51,244 INFO L225 Difference]: With dead ends: 88 [2020-12-23 07:54:51,244 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 07:54:51,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:54:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 07:54:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2020-12-23 07:54:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-23 07:54:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-12-23 07:54:51,256 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 29 [2020-12-23 07:54:51,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:51,257 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-12-23 07:54:51,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:54:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-12-23 07:54:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:54:51,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:51,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:51,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:51,466 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:51,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:51,466 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2020-12-23 07:54:51,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:51,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288347780] [2020-12-23 07:54:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:51,505 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:51,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112175983] [2020-12-23 07:54:51,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:52,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 07:54:52,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:52,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:54:52,769 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:54:52,784 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:54:52,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288347780] [2020-12-23 07:54:52,799 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:52,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112175983] [2020-12-23 07:54:52,800 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-23 07:54:52,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:52,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:54:52,800 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:54:52,800 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:54:53,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:53,037 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:54:53,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:54:53 BoogieIcfgContainer [2020-12-23 07:54:53,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:54:53,039 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:54:53,039 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:54:53,039 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:54:53,040 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:41" (3/4) ... [2020-12-23 07:54:53,044 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:54:53,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:54:53,047 INFO L168 Benchmark]: Toolchain (without parser) took 12116.53 ms. Allocated memory was 164.6 MB in the beginning and 201.3 MB in the end (delta: 36.7 MB). Free memory was 140.9 MB in the beginning and 165.0 MB in the end (delta: -24.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:53,047 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 164.6 MB. Free memory is still 141.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:54:53,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.31 ms. Allocated memory is still 164.6 MB. Free memory was 140.6 MB in the beginning and 130.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:53,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.22 ms. Allocated memory is still 164.6 MB. Free memory was 130.3 MB in the beginning and 128.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:53,055 INFO L168 Benchmark]: Boogie Preprocessor took 28.08 ms. Allocated memory is still 164.6 MB. Free memory was 128.4 MB in the beginning and 127.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:53,059 INFO L168 Benchmark]: RCFGBuilder took 619.74 ms. Allocated memory is still 164.6 MB. Free memory was 127.1 MB in the beginning and 145.2 MB in the end (delta: -18.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:53,063 INFO L168 Benchmark]: TraceAbstraction took 11104.62 ms. Allocated memory was 164.6 MB in the beginning and 201.3 MB in the end (delta: 36.7 MB). Free memory was 145.2 MB in the beginning and 165.0 MB in the end (delta: -19.9 MB). Peak memory consumption was 116.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:53,064 INFO L168 Benchmark]: Witness Printer took 6.16 ms. Allocated memory is still 201.3 MB. Free memory is still 165.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:54:53,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 164.6 MB. Free memory is still 141.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 302.31 ms. Allocated memory is still 164.6 MB. Free memory was 140.6 MB in the beginning and 130.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.22 ms. Allocated memory is still 164.6 MB. Free memory was 130.3 MB in the beginning and 128.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.08 ms. Allocated memory is still 164.6 MB. Free memory was 128.4 MB in the beginning and 127.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 619.74 ms. Allocated memory is still 164.6 MB. Free memory was 127.1 MB in the beginning and 145.2 MB in the end (delta: -18.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11104.62 ms. Allocated memory was 164.6 MB in the beginning and 201.3 MB in the end (delta: 36.7 MB). Free memory was 145.2 MB in the beginning and 165.0 MB in the end (delta: -19.9 MB). Peak memory consumption was 116.1 MB. Max. memory is 8.0 GB. * Witness Printer took 6.16 ms. Allocated memory is still 201.3 MB. Free memory is still 165.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] unsigned int A, B; [L24] unsigned int r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND TRUE !(r >= d) [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(p != 1)) [L52] d = d / 2 [L53] p = p / 2 [L54] COND TRUE r >= d [L55] r = r - d [L56] q = q + p [L46] COND TRUE 1 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 10.9s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 203 SDtfs, 917 SDslu, 316 SDs, 0 SdLazy, 538 SolverSat, 166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 62 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 34691 SizeOfPredicates, 44 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 0/25 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...