/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:43:47,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:43:47,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:43:47,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:43:47,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:43:47,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:43:47,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:43:47,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:43:47,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:43:47,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:43:47,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:43:47,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:43:47,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:43:47,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:43:47,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:43:47,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:43:47,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:43:47,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:43:47,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:43:47,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:43:47,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:43:47,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:43:47,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:43:47,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:43:47,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:43:47,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:43:47,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:43:47,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:43:47,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:43:47,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:43:47,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:43:47,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:43:47,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:43:47,448 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:43:47,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:43:47,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:43:47,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:43:47,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:43:47,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:43:47,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:43:47,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:43:47,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:43:47,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:43:47,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:43:47,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:43:47,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:43:47,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:43:47,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:43:47,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:43:47,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:43:47,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:43:47,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:43:47,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:43:47,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:43:47,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:43:47,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:43:47,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:43:47,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:43:47,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:43:47,970 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:43:47,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound20.c [2021-01-06 17:43:48,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7481ddc18/16bf24e618f8407789ebd1e8f1dc0874/FLAGc01024fb2 [2021-01-06 17:43:48,732 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:43:48,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound20.c [2021-01-06 17:43:48,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7481ddc18/16bf24e618f8407789ebd1e8f1dc0874/FLAGc01024fb2 [2021-01-06 17:43:49,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7481ddc18/16bf24e618f8407789ebd1e8f1dc0874 [2021-01-06 17:43:49,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:43:49,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:43:49,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:43:49,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:43:49,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:43:49,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:43:49" (1/1) ... [2021-01-06 17:43:49,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f7da07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49, skipping insertion in model container [2021-01-06 17:43:49,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:43:49" (1/1) ... [2021-01-06 17:43:49,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:43:49,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:43:49,306 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound20.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~az~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2021-01-06 17:43:49,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:43:49,342 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:43:49,359 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound20.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~az~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2021-01-06 17:43:49,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:43:49,389 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:43:49,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49 WrapperNode [2021-01-06 17:43:49,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:43:49,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:43:49,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:43:49,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:43:49,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49" (1/1) ... [2021-01-06 17:43:49,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49" (1/1) ... [2021-01-06 17:43:49,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:43:49,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:43:49,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:43:49,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:43:49,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49" (1/1) ... [2021-01-06 17:43:49,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49" (1/1) ... [2021-01-06 17:43:49,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49" (1/1) ... [2021-01-06 17:43:49,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49" (1/1) ... [2021-01-06 17:43:49,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49" (1/1) ... [2021-01-06 17:43:49,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49" (1/1) ... [2021-01-06 17:43:49,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49" (1/1) ... [2021-01-06 17:43:49,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:43:49,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:43:49,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:43:49,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:43:49,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:43:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:43:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:43:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:43:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:43:50,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:43:50,037 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-06 17:43:50,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:43:50 BoogieIcfgContainer [2021-01-06 17:43:50,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:43:50,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:43:50,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:43:50,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:43:50,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:43:49" (1/3) ... [2021-01-06 17:43:50,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350635bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:43:50, skipping insertion in model container [2021-01-06 17:43:50,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:49" (2/3) ... [2021-01-06 17:43:50,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350635bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:43:50, skipping insertion in model container [2021-01-06 17:43:50,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:43:50" (3/3) ... [2021-01-06 17:43:50,070 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound20.c [2021-01-06 17:43:50,092 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:43:50,103 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:43:50,149 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:43:50,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:43:50,202 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:43:50,203 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:43:50,203 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:43:50,205 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:43:50,205 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:43:50,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:43:50,206 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:43:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-01-06 17:43:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:43:50,237 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:43:50,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:43:50,238 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:43:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:43:50,250 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 17:43:50,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:43:50,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939474309] [2021-01-06 17:43:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:43:50,436 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:43:50,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104723273] [2021-01-06 17:43:50,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:43:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:43:50,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 17:43:50,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:43:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:43:50,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939474309] [2021-01-06 17:43:50,723 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:43:50,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104723273] [2021-01-06 17:43:50,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:43:50,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:43:50,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748660586] [2021-01-06 17:43:50,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:43:50,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:43:50,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:43:50,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:43:50,761 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2021-01-06 17:43:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:43:50,941 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-01-06 17:43:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:43:50,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-06 17:43:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:43:50,954 INFO L225 Difference]: With dead ends: 44 [2021-01-06 17:43:50,955 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 17:43:50,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:43:50,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 17:43:50,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-01-06 17:43:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 17:43:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-01-06 17:43:51,000 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2021-01-06 17:43:51,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:43:51,001 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-01-06 17:43:51,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:43:51,001 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-01-06 17:43:51,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:43:51,002 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:43:51,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:43:51,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-01-06 17:43:51,218 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:43:51,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:43:51,220 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-01-06 17:43:51,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:43:51,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903557848] [2021-01-06 17:43:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:43:51,233 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:43:51,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311669965] [2021-01-06 17:43:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:43:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:43:51,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:43:51,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:43:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:43:51,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903557848] [2021-01-06 17:43:51,547 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:43:51,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311669965] [2021-01-06 17:43:51,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:43:51,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:43:51,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106065947] [2021-01-06 17:43:51,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:43:51,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:43:51,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:43:51,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:43:51,553 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 7 states. [2021-01-06 17:43:51,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:43:51,845 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-01-06 17:43:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:43:51,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-01-06 17:43:51,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:43:51,848 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:43:51,848 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:43:51,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:43:51,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:43:51,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-01-06 17:43:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:43:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-01-06 17:43:51,869 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-01-06 17:43:51,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:43:51,870 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-01-06 17:43:51,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:43:51,870 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-01-06 17:43:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:43:51,871 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:43:51,873 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2021-01-06 17:43:52,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:43:52,075 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:43:52,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:43:52,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1778536670, now seen corresponding path program 2 times [2021-01-06 17:43:52,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:43:52,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353985178] [2021-01-06 17:43:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:43:52,089 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:43:52,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307934133] [2021-01-06 17:43:52,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:43:52,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:43:52,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:43:52,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:43:52,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:44:11,373 WARN L197 SmtUtils]: Spent 18.70 s on a formula simplification that was a NOOP. DAG size: 25 [2021-01-06 17:44:19,616 WARN L197 SmtUtils]: Spent 4.11 s on a formula simplification that was a NOOP. DAG size: 16 [2021-01-06 17:44:24,232 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 15 [2021-01-06 17:44:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:44:26,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353985178] [2021-01-06 17:44:26,293 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:44:26,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307934133] [2021-01-06 17:44:26,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:44:26,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:44:26,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483465262] [2021-01-06 17:44:26,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:44:26,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:44:26,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:44:26,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=49, Unknown=4, NotChecked=0, Total=72 [2021-01-06 17:44:26,296 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2021-01-06 17:44:55,276 WARN L197 SmtUtils]: Spent 6.37 s on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2021-01-06 17:44:59,412 WARN L197 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 18 [2021-01-06 17:45:04,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:04,739 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-01-06 17:45:04,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:45:04,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2021-01-06 17:45:04,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:04,742 INFO L225 Difference]: With dead ends: 33 [2021-01-06 17:45:04,742 INFO L226 Difference]: Without dead ends: 31 [2021-01-06 17:45:04,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 50.7s TimeCoverageRelationStatistics Valid=34, Invalid=90, Unknown=8, NotChecked=0, Total=132 [2021-01-06 17:45:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-01-06 17:45:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-01-06 17:45:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:45:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-01-06 17:45:04,750 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2021-01-06 17:45:04,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:04,750 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-01-06 17:45:04,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:45:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-01-06 17:45:04,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:45:04,751 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:04,751 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:04,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:04,953 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:04,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:04,954 INFO L82 PathProgramCache]: Analyzing trace with hash 699894435, now seen corresponding path program 1 times [2021-01-06 17:45:04,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:04,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396825332] [2021-01-06 17:45:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:04,966 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:04,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397171863] [2021-01-06 17:45:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:05,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:45:05,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:05,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:05,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396825332] [2021-01-06 17:45:05,113 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:05,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397171863] [2021-01-06 17:45:05,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:05,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:45:05,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004805778] [2021-01-06 17:45:05,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:45:05,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:05,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:45:05,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:45:05,117 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2021-01-06 17:45:05,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:05,179 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-01-06 17:45:05,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:45:05,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:45:05,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:05,182 INFO L225 Difference]: With dead ends: 27 [2021-01-06 17:45:05,182 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:45:05,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:45:05,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:45:05,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 17:45:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:45:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-01-06 17:45:05,190 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2021-01-06 17:45:05,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:05,191 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-01-06 17:45:05,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:45:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-01-06 17:45:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:45:05,192 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:05,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:05,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:05,406 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:05,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:05,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1664485700, now seen corresponding path program 1 times [2021-01-06 17:45:05,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:05,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29835092] [2021-01-06 17:45:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:05,423 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:05,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283376630] [2021-01-06 17:45:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:05,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:45:05,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 17:45:05,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29835092] [2021-01-06 17:45:05,613 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:05,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283376630] [2021-01-06 17:45:05,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:05,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:45:05,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928527392] [2021-01-06 17:45:05,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:45:05,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:05,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:45:05,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:45:05,616 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2021-01-06 17:45:09,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:09,706 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-01-06 17:45:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:45:09,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-01-06 17:45:09,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:09,708 INFO L225 Difference]: With dead ends: 27 [2021-01-06 17:45:09,708 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:45:09,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:45:09,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:45:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 17:45:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:45:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-01-06 17:45:09,716 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2021-01-06 17:45:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:09,716 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-01-06 17:45:09,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:45:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-01-06 17:45:09,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:45:09,718 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:09,718 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2021-01-06 17:45:09,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:09,934 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:09,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:09,935 INFO L82 PathProgramCache]: Analyzing trace with hash -58338866, now seen corresponding path program 3 times [2021-01-06 17:45:09,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:09,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444154585] [2021-01-06 17:45:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:09,948 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:09,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711995149] [2021-01-06 17:45:09,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:10,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:45:10,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:45:10,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:45:10,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:10,426 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:45:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 17:45:10,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444154585] [2021-01-06 17:45:10,483 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:10,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711995149] [2021-01-06 17:45:10,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:10,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:45:10,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636342888] [2021-01-06 17:45:10,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:45:10,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:10,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:45:10,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:45:10,486 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2021-01-06 17:45:30,912 WARN L197 SmtUtils]: Spent 14.14 s on a formula simplification that was a NOOP. DAG size: 40 [2021-01-06 17:45:39,101 WARN L197 SmtUtils]: Spent 8.17 s on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-01-06 17:45:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:44,965 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-01-06 17:45:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:45:44,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-01-06 17:45:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:44,973 INFO L225 Difference]: With dead ends: 23 [2021-01-06 17:45:44,973 INFO L226 Difference]: Without dead ends: 21 [2021-01-06 17:45:44,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:45:44,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-06 17:45:44,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-01-06 17:45:44,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:45:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-01-06 17:45:44,981 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2021-01-06 17:45:44,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:44,982 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-01-06 17:45:44,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:45:44,982 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-01-06 17:45:44,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:45:44,984 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:44,984 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:45,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:45,187 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:45,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:45,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1808548489, now seen corresponding path program 2 times [2021-01-06 17:45:45,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:45,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964647336] [2021-01-06 17:45:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:45,199 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:45,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684882885] [2021-01-06 17:45:45,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:45,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:45:45,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:45:45,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:45:45,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:45,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964647336] [2021-01-06 17:45:45,394 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:45,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684882885] [2021-01-06 17:45:45,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:45,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:45:45,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192429113] [2021-01-06 17:45:45,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:45:45,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:45,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:45:45,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:45:45,399 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2021-01-06 17:45:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:45,510 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-01-06 17:45:45,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:45:45,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2021-01-06 17:45:45,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:45,514 INFO L225 Difference]: With dead ends: 28 [2021-01-06 17:45:45,514 INFO L226 Difference]: Without dead ends: 24 [2021-01-06 17:45:45,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:45:45,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-06 17:45:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-01-06 17:45:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 17:45:45,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-01-06 17:45:45,533 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 19 [2021-01-06 17:45:45,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:45,533 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-01-06 17:45:45,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:45:45,534 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-01-06 17:45:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:45:45,535 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:45,535 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:45,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:45,750 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:45,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:45,751 INFO L82 PathProgramCache]: Analyzing trace with hash 754083403, now seen corresponding path program 3 times [2021-01-06 17:45:45,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:45,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255252900] [2021-01-06 17:45:45,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:45,763 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:45,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428944359] [2021-01-06 17:45:45,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:45,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:45:45,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:45:45,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:45:45,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:46,159 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:45:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-01-06 17:45:46,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255252900] [2021-01-06 17:45:46,740 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:46,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428944359] [2021-01-06 17:45:46,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:46,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:45:46,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233899386] [2021-01-06 17:45:46,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:45:46,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:46,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:45:46,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:45:46,747 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2021-01-06 17:46:05,771 WARN L197 SmtUtils]: Spent 14.86 s on a formula simplification that was a NOOP. DAG size: 40 [2021-01-06 17:46:20,068 WARN L197 SmtUtils]: Spent 14.28 s on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-01-06 17:46:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:46:20,098 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-01-06 17:46:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:46:20,100 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-01-06 17:46:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:46:20,101 INFO L225 Difference]: With dead ends: 24 [2021-01-06 17:46:20,101 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:46:20,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:46:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:46:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:46:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:46:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:46:20,103 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-01-06 17:46:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:46:20,103 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:46:20,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:46:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:46:20,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:46:20,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-01-06 17:46:20,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:46:20,819 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2021-01-06 17:46:31,241 WARN L197 SmtUtils]: Spent 10.41 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-06 17:46:31,247 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:46:31,248 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:46:31,248 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:46:31,248 INFO L185 CegarLoopUtils]: At program point L15-2(lines 37 38) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (<= ~counter~0 1) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~az~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0))) (and .cse0 (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~a~0) (+ (* ULTIMATE.start_main_~az~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) (let ((.cse3 (= ULTIMATE.start_main_~z~0 0))) (or (let ((.cse2 (+ (* ULTIMATE.start_main_~a~0 (- 1)) ULTIMATE.start_main_~x~0))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (let ((.cse1 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ .cse1 (* ULTIMATE.start_main_~az~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (+ (* .cse1 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0))) (not .cse3) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0))) (and (= ULTIMATE.start_main_~y~0 0) .cse3)))))) [2021-01-06 17:46:31,248 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:46:31,249 INFO L192 CegarLoopUtils]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-01-06 17:46:31,249 INFO L189 CegarLoopUtils]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2021-01-06 17:46:31,249 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:46:31,249 INFO L185 CegarLoopUtils]: At program point L34-3(lines 34 43) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0))) (or (let ((.cse2 (= ULTIMATE.start_main_~z~0 0))) (let ((.cse1 (let ((.cse4 (+ (* ULTIMATE.start_main_~a~0 (- 1)) ULTIMATE.start_main_~x~0))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (let ((.cse3 (div .cse4 ULTIMATE.start_main_~z~0))) (= (+ .cse3 (* ULTIMATE.start_main_~az~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (+ (* .cse3 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0))) (not .cse2) (= (mod .cse4 ULTIMATE.start_main_~z~0) 0))))) (and (or .cse0 .cse1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or .cse1 (and (= ULTIMATE.start_main_~y~0 0) .cse2))))) (and .cse0 (<= ~counter~0 0) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~az~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0))))) [2021-01-06 17:46:31,249 INFO L189 CegarLoopUtils]: For program point L34-4(lines 34 43) no Hoare annotation was computed. [2021-01-06 17:46:31,249 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:46:31,249 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:46:31,249 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:46:31,249 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:46:31,250 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:46:31,250 INFO L192 CegarLoopUtils]: At program point L45(lines 22 46) the Hoare annotation is: true [2021-01-06 17:46:31,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:46:31 BoogieIcfgContainer [2021-01-06 17:46:31,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:46:31,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:46:31,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:46:31,279 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:46:31,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:43:50" (3/4) ... [2021-01-06 17:46:31,283 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:46:31,301 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-06 17:46:31,301 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:46:31,302 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:46:31,303 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:46:31,383 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo3-ll_unwindbound20.c-witness.graphml [2021-01-06 17:46:31,384 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:46:31,385 INFO L168 Benchmark]: Toolchain (without parser) took 162285.45 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 127.2 MB in the beginning and 102.0 MB in the end (delta: 25.3 MB). Peak memory consumption was 66.9 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:31,386 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 122.9 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:46:31,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.48 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:31,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:31,387 INFO L168 Benchmark]: Boogie Preprocessor took 31.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 114.1 MB in the end (delta: 954.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:31,388 INFO L168 Benchmark]: RCFGBuilder took 567.35 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 134.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:31,389 INFO L168 Benchmark]: TraceAbstraction took 161233.58 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 133.8 MB in the beginning and 104.6 MB in the end (delta: 29.3 MB). Peak memory consumption was 70.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:31,389 INFO L168 Benchmark]: Witness Printer took 105.21 ms. Allocated memory is still 191.9 MB. Free memory was 104.6 MB in the beginning and 102.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:31,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 122.9 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.48 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.6 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 48.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 114.1 MB in the end (delta: 954.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 567.35 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 134.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 161233.58 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 133.8 MB in the beginning and 104.6 MB in the end (delta: 29.3 MB). Peak memory consumption was 70.1 MB. Max. memory is 8.0 GB. * Witness Printer took 105.21 ms. Allocated memory is still 191.9 MB. Free memory was 104.6 MB in the beginning and 102.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((a == x || (((y % z == 0 && (a * -1 + x) / z + az * (y / z) == (a * -1 + x) / z * z + a) && !(z == 0)) && (a * -1 + x) % z == 0)) && 1 == cond) && ((((y % z == 0 && (a * -1 + x) / z + az * (y / z) == (a * -1 + x) / z * z + a) && !(z == 0)) && (a * -1 + x) % z == 0) || (y == 0 && z == 0))) || (((a == x && counter <= 0) && y == 1) && az == a * z) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((counter <= 1 && a == x) && 1 == cond) && y == 1) && az == a * z) || ((1 == cond && z * x + a == az * y + x) && ((((y % z == 0 && (a * -1 + x) / z + az * (y / z) == (a * -1 + x) / z * z + a) && !(z == 0)) && (a * -1 + x) % z == 0) || (y == 0 && z == 0))) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 150.1s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 111.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 92 SDslu, 194 SDs, 0 SdLazy, 181 SolverSat, 41 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 41.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 103.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 208 HoareAnnotationTreeSize, 4 FomulaSimplifications, 56 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 686 FormulaSimplificationTreeSizeReductionInter, 10.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 36.1s InterpolantComputationTime, 122 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 14194 SizeOfPredicates, 58 NumberOfNonLiveVariables, 730 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 64/104 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...