/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_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:43:51,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:43:51,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:43:51,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:43:51,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:43:51,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:43:51,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:43:51,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:43:51,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:43:51,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:43:51,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:43:51,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:43:51,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:43:51,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:43:51,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:43:51,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:43:51,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:43:51,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:43:51,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:43:51,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:43:51,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:43:51,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:43:51,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:43:51,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:43:51,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:43:51,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:43:51,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:43:51,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:43:51,547 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 17:43:51,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:43:51,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:43:51,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:43:51,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:43:51,597 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:43:51,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:43:51,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:43:51,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:43:51,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:43:51,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:43:51,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:43:51,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:43:51,600 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:43:51,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:43:51,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:43:51,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:43:51,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:43:51,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:43:51,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:43:51,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:43:51,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:43:51,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:43:51,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:43:51,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:43:51,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:43:51,603 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:43:52,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:43:52,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:43:52,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:43:52,087 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:43:52,088 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:43:52,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound50.c [2021-01-06 17:43:52,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b9cd94cfe/8a8e33b4df394797b360bf1a175c9af2/FLAG0cbb39645 [2021-01-06 17:43:52,712 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:43:52,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound50.c [2021-01-06 17:43:52,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b9cd94cfe/8a8e33b4df394797b360bf1a175c9af2/FLAG0cbb39645 [2021-01-06 17:43:53,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b9cd94cfe/8a8e33b4df394797b360bf1a175c9af2 [2021-01-06 17:43:53,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:43:53,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:43:53,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:43:53,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:43:53,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:43:53,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:43:53" (1/1) ... [2021-01-06 17:43:53,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7440b7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53, skipping insertion in model container [2021-01-06 17:43:53,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:43:53" (1/1) ... [2021-01-06 17:43:53,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:43:53,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:43:53,280 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_unwindbound50.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 17:43:53,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:43:53,313 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:43:53,328 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_unwindbound50.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 17:43:53,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:43:53,351 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:43:53,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53 WrapperNode [2021-01-06 17:43:53,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:43:53,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:43:53,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:43:53,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:43:53,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53" (1/1) ... [2021-01-06 17:43:53,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53" (1/1) ... [2021-01-06 17:43:53,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:43:53,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:43:53,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:43:53,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:43:53,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53" (1/1) ... [2021-01-06 17:43:53,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53" (1/1) ... [2021-01-06 17:43:53,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53" (1/1) ... [2021-01-06 17:43:53,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53" (1/1) ... [2021-01-06 17:43:53,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53" (1/1) ... [2021-01-06 17:43:53,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53" (1/1) ... [2021-01-06 17:43:53,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53" (1/1) ... [2021-01-06 17:43:53,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:43:53,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:43:53,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:43:53,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:43:53,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53" (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 17:43:53,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:43:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:43:53,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:43:53,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:43:53,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:43:53,818 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-06 17:43:53,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:43:53 BoogieIcfgContainer [2021-01-06 17:43:53,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:43:53,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:43:53,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:43:53,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:43:53,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:43:53" (1/3) ... [2021-01-06 17:43:53,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cdf217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:43:53, skipping insertion in model container [2021-01-06 17:43:53,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:43:53" (2/3) ... [2021-01-06 17:43:53,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cdf217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:43:53, skipping insertion in model container [2021-01-06 17:43:53,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:43:53" (3/3) ... [2021-01-06 17:43:53,870 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound50.c [2021-01-06 17:43:53,904 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:43:53,909 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:43:53,931 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:43:53,960 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:43:53,961 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:43:53,961 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:43:53,961 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:43:53,961 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:43:53,961 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:43:53,962 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:43:53,962 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:43:53,977 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-01-06 17:43:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:43:53,983 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:43:53,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:43:53,984 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:43:53,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:43:53,991 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 17:43:54,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:43:54,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937493519] [2021-01-06 17:43:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:43:54,145 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:43:54,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404641665] [2021-01-06 17:43:54,147 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 17:43:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:43:54,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 17:43:54,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:43:54,382 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 17:43:54,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937493519] [2021-01-06 17:43:54,383 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:43:54,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404641665] [2021-01-06 17:43:54,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:43:54,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:43:54,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263315313] [2021-01-06 17:43:54,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:43:54,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:43:54,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:43:54,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:43:54,408 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2021-01-06 17:43:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:43:54,509 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-01-06 17:43:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:43:54,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-06 17:43:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:43:54,520 INFO L225 Difference]: With dead ends: 44 [2021-01-06 17:43:54,520 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 17:43:54,523 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 17:43:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 17:43:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-01-06 17:43:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 17:43:54,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-01-06 17:43:54,556 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2021-01-06 17:43:54,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:43:54,556 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-01-06 17:43:54,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:43:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-01-06 17:43:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:43:54,557 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:43:54,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:43:54,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-01-06 17:43:54,770 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:43:54,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:43:54,772 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-01-06 17:43:54,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:43:54,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712532076] [2021-01-06 17:43:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:43:54,788 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:43:54,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903079973] [2021-01-06 17:43:54,789 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 17:43:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:43:54,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:43:54,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:43:55,134 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 17:43:55,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712532076] [2021-01-06 17:43:55,135 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:43:55,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903079973] [2021-01-06 17:43:55,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:43:55,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:43:55,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067800375] [2021-01-06 17:43:55,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:43:55,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:43:55,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:43:55,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:43:55,141 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 7 states. [2021-01-06 17:43:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:43:55,357 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-01-06 17:43:55,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:43:55,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-01-06 17:43:55,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:43:55,360 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:43:55,360 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:43:55,361 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 17:43:55,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:43:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-01-06 17:43:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:43:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-01-06 17:43:55,369 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-01-06 17:43:55,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:43:55,369 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-01-06 17:43:55,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:43:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-01-06 17:43:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:43:55,370 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:43:55,371 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2021-01-06 17:43:55,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:43:55,586 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:43:55,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:43:55,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1778536670, now seen corresponding path program 2 times [2021-01-06 17:43:55,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:43:55,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182519839] [2021-01-06 17:43:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:43:55,601 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:43:55,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067861180] [2021-01-06 17:43:55,601 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 17:43:55,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:43:55,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:43:55,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:43:55,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:44:14,230 WARN L197 SmtUtils]: Spent 18.12 s on a formula simplification that was a NOOP. DAG size: 25 [2021-01-06 17:44:22,368 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 16 [2021-01-06 17:44:26,614 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 15 [2021-01-06 17:44:28,669 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 17:44:28,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182519839] [2021-01-06 17:44:28,670 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:44:28,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067861180] [2021-01-06 17:44:28,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:44:28,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:44:28,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081799686] [2021-01-06 17:44:28,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:44:28,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:44:28,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:44:28,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=49, Unknown=4, NotChecked=0, Total=72 [2021-01-06 17:44:28,673 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2021-01-06 17:44:57,558 WARN L197 SmtUtils]: Spent 8.47 s on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2021-01-06 17:44:59,692 WARN L197 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 18 [2021-01-06 17:45:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:04,307 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-01-06 17:45:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:45:04,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2021-01-06 17:45:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:04,310 INFO L225 Difference]: With dead ends: 33 [2021-01-06 17:45:04,311 INFO L226 Difference]: Without dead ends: 31 [2021-01-06 17:45:04,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=34, Invalid=91, Unknown=7, NotChecked=0, Total=132 [2021-01-06 17:45:04,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-01-06 17:45:04,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-01-06 17:45:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:45:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-01-06 17:45:04,324 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2021-01-06 17:45:04,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:04,325 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-01-06 17:45:04,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:45:04,325 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-01-06 17:45:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:45:04,326 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:04,326 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:04,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:04,527 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:04,529 INFO L82 PathProgramCache]: Analyzing trace with hash 699894435, now seen corresponding path program 1 times [2021-01-06 17:45:04,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:04,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924230670] [2021-01-06 17:45:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:04,541 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:04,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416158735] [2021-01-06 17:45:04,542 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 17:45:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:04,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:45:04,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:04,667 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 17:45:04,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924230670] [2021-01-06 17:45:04,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:04,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416158735] [2021-01-06 17:45:04,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:04,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:45:04,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071345964] [2021-01-06 17:45:04,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:45:04,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:04,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:45:04,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:45:04,670 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2021-01-06 17:45:04,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:04,726 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-01-06 17:45:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:45:04,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:45:04,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:04,729 INFO L225 Difference]: With dead ends: 27 [2021-01-06 17:45:04,730 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:45:04,732 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 17:45:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:45:04,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 17:45:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:45:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-01-06 17:45:04,741 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2021-01-06 17:45:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:04,741 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-01-06 17:45:04,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:45:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-01-06 17:45:04,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:45:04,742 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:04,742 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:04,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:04,944 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:04,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1664485700, now seen corresponding path program 1 times [2021-01-06 17:45:04,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:04,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61979556] [2021-01-06 17:45:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:04,973 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:04,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300863330] [2021-01-06 17:45:04,974 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 17:45:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:05,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:45:05,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:05,127 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 17:45:05,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61979556] [2021-01-06 17:45:05,128 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:05,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300863330] [2021-01-06 17:45:05,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:05,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:45:05,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167260076] [2021-01-06 17:45:05,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:45:05,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:05,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:45:05,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:45:05,131 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2021-01-06 17:45:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:09,214 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-01-06 17:45:09,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:45:09,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-01-06 17:45:09,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:09,215 INFO L225 Difference]: With dead ends: 27 [2021-01-06 17:45:09,216 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:45:09,216 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 17:45:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:45:09,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 17:45:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:45:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-01-06 17:45:09,222 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2021-01-06 17:45:09,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:09,222 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-01-06 17:45:09,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:45:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-01-06 17:45:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:45:09,223 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:09,223 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2021-01-06 17:45:09,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:09,438 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:09,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:09,439 INFO L82 PathProgramCache]: Analyzing trace with hash -58338866, now seen corresponding path program 3 times [2021-01-06 17:45:09,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:09,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142558027] [2021-01-06 17:45:09,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:09,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:09,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021861195] [2021-01-06 17:45:09,453 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 17:45:09,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:45:09,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:45:09,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:45:09,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:09,704 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:45:09,748 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 17:45:09,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142558027] [2021-01-06 17:45:09,748 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:09,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021861195] [2021-01-06 17:45:09,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:09,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:45:09,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260395563] [2021-01-06 17:45:09,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:45:09,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:09,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:45:09,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:45:09,750 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2021-01-06 17:45:30,944 WARN L197 SmtUtils]: Spent 16.80 s on a formula simplification that was a NOOP. DAG size: 40 [2021-01-06 17:45:39,194 WARN L197 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-01-06 17:45:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:43,280 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-01-06 17:45:43,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:45:43,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-01-06 17:45:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:43,282 INFO L225 Difference]: With dead ends: 23 [2021-01-06 17:45:43,282 INFO L226 Difference]: Without dead ends: 21 [2021-01-06 17:45:43,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:45:43,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-06 17:45:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-01-06 17:45:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:45:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-01-06 17:45:43,289 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2021-01-06 17:45:43,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:43,289 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-01-06 17:45:43,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:45:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-01-06 17:45:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:45:43,290 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:43,290 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:43,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:43,492 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:43,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:43,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1808548489, now seen corresponding path program 2 times [2021-01-06 17:45:43,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:43,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137841328] [2021-01-06 17:45:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:43,502 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:43,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905206885] [2021-01-06 17:45:43,502 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 17:45:43,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:45:43,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:45:43,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:45:43,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:43,656 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 17:45:43,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137841328] [2021-01-06 17:45:43,656 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:43,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905206885] [2021-01-06 17:45:43,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:43,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:45:43,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957901119] [2021-01-06 17:45:43,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:45:43,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:43,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:45:43,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:45:43,658 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2021-01-06 17:45:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:43,734 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-01-06 17:45:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:45:43,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2021-01-06 17:45:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:43,735 INFO L225 Difference]: With dead ends: 28 [2021-01-06 17:45:43,736 INFO L226 Difference]: Without dead ends: 24 [2021-01-06 17:45:43,736 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 17:45:43,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-06 17:45:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-01-06 17:45:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 17:45:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-01-06 17:45:43,744 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 19 [2021-01-06 17:45:43,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:43,744 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-01-06 17:45:43,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:45:43,744 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-01-06 17:45:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:45:43,745 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:43,745 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:43,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:43,947 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash 754083403, now seen corresponding path program 3 times [2021-01-06 17:45:43,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:43,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620667336] [2021-01-06 17:45:43,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:43,968 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:43,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959040229] [2021-01-06 17:45:43,969 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 17:45:44,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:45:44,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:45:44,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:45:44,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:46,940 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:45:46,983 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 17:45:46,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620667336] [2021-01-06 17:45:46,983 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:46,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959040229] [2021-01-06 17:45:46,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:46,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:45:46,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59310090] [2021-01-06 17:45:46,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:45:46,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:46,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:45:46,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2021-01-06 17:45:46,993 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2021-01-06 17:46:01,465 WARN L197 SmtUtils]: Spent 10.37 s on a formula simplification that was a NOOP. DAG size: 40 [2021-01-06 17:46:15,507 WARN L197 SmtUtils]: Spent 14.03 s on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-01-06 17:46:16,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:46:16,046 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-01-06 17:46:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:46:16,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-01-06 17:46:16,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:46:16,051 INFO L225 Difference]: With dead ends: 24 [2021-01-06 17:46:16,051 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:46:16,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=28, Invalid=43, Unknown=1, NotChecked=0, Total=72 [2021-01-06 17:46:16,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:46:16,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:46:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:46:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:46:16,055 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-01-06 17:46:16,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:46:16,055 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:46:16,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:46:16,055 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:46:16,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:46:16,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-01-06 17:46:16,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:46:16,993 WARN L197 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2021-01-06 17:46:27,432 WARN L197 SmtUtils]: Spent 10.43 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-06 17:46:27,434 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:46:27,435 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:46:27,435 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:46:27,435 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 17:46:27,435 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:46:27,435 INFO L192 CegarLoopUtils]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-01-06 17:46:27,436 INFO L189 CegarLoopUtils]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2021-01-06 17:46:27,436 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:46:27,436 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 17:46:27,436 INFO L189 CegarLoopUtils]: For program point L34-4(lines 34 43) no Hoare annotation was computed. [2021-01-06 17:46:27,436 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:46:27,436 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:46:27,437 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:46:27,437 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:46:27,437 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:46:27,437 INFO L192 CegarLoopUtils]: At program point L45(lines 22 46) the Hoare annotation is: true [2021-01-06 17:46:27,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:46:27 BoogieIcfgContainer [2021-01-06 17:46:27,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:46:27,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:46:27,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:46:27,471 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:46:27,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:43:53" (3/4) ... [2021-01-06 17:46:27,478 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:46:27,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-06 17:46:27,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:46:27,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:46:27,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:46:27,565 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo3-ll_unwindbound50.c-witness.graphml [2021-01-06 17:46:27,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:46:27,569 INFO L168 Benchmark]: Toolchain (without parser) took 154475.33 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 72.4 MB in the end (delta: 56.9 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:27,572 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:46:27,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.72 ms. Allocated memory is still 154.1 MB. Free memory was 129.1 MB in the beginning and 119.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:27,573 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.14 ms. Allocated memory is still 154.1 MB. Free memory was 119.4 MB in the beginning and 118.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:27,574 INFO L168 Benchmark]: Boogie Preprocessor took 24.82 ms. Allocated memory is still 154.1 MB. Free memory was 117.8 MB in the beginning and 116.9 MB in the end (delta: 856.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:27,574 INFO L168 Benchmark]: RCFGBuilder took 400.90 ms. Allocated memory is still 154.1 MB. Free memory was 116.7 MB in the beginning and 104.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:27,575 INFO L168 Benchmark]: TraceAbstraction took 153618.43 ms. Allocated memory is still 154.1 MB. Free memory was 137.2 MB in the beginning and 75.0 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:27,575 INFO L168 Benchmark]: Witness Printer took 93.89 ms. Allocated memory is still 154.1 MB. Free memory was 75.0 MB in the beginning and 72.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:27,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.72 ms. Allocated memory is still 154.1 MB. Free memory was 129.1 MB in the beginning and 119.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.14 ms. Allocated memory is still 154.1 MB. Free memory was 119.4 MB in the beginning and 118.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.82 ms. Allocated memory is still 154.1 MB. Free memory was 117.8 MB in the beginning and 116.9 MB in the end (delta: 856.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 400.90 ms. Allocated memory is still 154.1 MB. Free memory was 116.7 MB in the beginning and 104.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 153618.43 ms. Allocated memory is still 154.1 MB. Free memory was 137.2 MB in the beginning and 75.0 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.7 MB. Max. memory is 8.0 GB. * Witness Printer took 93.89 ms. Allocated memory is still 154.1 MB. Free memory was 75.0 MB in the beginning and 72.4 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: 142.3s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 102.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 11.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 92 SDslu, 195 SDs, 0 SdLazy, 182 SolverSat, 41 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 35.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 102.6s 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, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 686 FormulaSimplificationTreeSizeReductionInter, 11.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 36.7s 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! Received shutdown request...