/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/ps2-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:58:41,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:58:41,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:58:41,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:58:41,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:58:41,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:58:41,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:58:41,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:58:41,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:58:41,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:58:41,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:58:41,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:58:41,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:58:41,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:58:41,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:58:41,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:58:41,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:58:41,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:58:41,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:58:41,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:58:41,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:58:41,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:58:41,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:58:41,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:58:41,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:58:41,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:58:41,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:58:41,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:58:41,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:58:41,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:58:41,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:58:41,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:58:41,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:58:41,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:58:41,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:58:41,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:58:41,530 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 17:58:41,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:58:41,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:58:41,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:58:41,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:58:41,586 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:58:41,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:58:41,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:58:41,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:58:41,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:58:41,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:58:41,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:58:41,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:58:41,589 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:58:41,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:58:41,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:58:41,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:58:41,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:58:41,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:58:41,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:58:41,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:58:41,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:58:41,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:58:41,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:58:41,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:58:41,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:58:41,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:58:42,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:58:42,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:58:42,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:58:42,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:58:42,044 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:58:42,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound100.c [2021-01-06 17:58:42,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5ed157652/26acf0cb9c1349289bc499d2a9f79390/FLAG1d60dbe55 [2021-01-06 17:58:42,669 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:58:42,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound100.c [2021-01-06 17:58:42,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5ed157652/26acf0cb9c1349289bc499d2a9f79390/FLAG1d60dbe55 [2021-01-06 17:58:43,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5ed157652/26acf0cb9c1349289bc499d2a9f79390 [2021-01-06 17:58:43,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:58:43,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:58:43,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:58:43,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:58:43,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:58:43,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:58:43" (1/1) ... [2021-01-06 17:58:43,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11caf58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43, skipping insertion in model container [2021-01-06 17:58:43,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:58:43" (1/1) ... [2021-01-06 17:58:43,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:58:43,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:58:43,328 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/ps2-ll_valuebound100.c[454,467] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:58:43,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:58:43,364 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:58:43,380 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/ps2-ll_valuebound100.c[454,467] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:58:43,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:58:43,418 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:58:43,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43 WrapperNode [2021-01-06 17:58:43,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:58:43,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:58:43,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:58:43,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:58:43,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43" (1/1) ... [2021-01-06 17:58:43,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43" (1/1) ... [2021-01-06 17:58:43,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:58:43,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:58:43,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:58:43,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:58:43,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43" (1/1) ... [2021-01-06 17:58:43,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43" (1/1) ... [2021-01-06 17:58:43,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43" (1/1) ... [2021-01-06 17:58:43,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43" (1/1) ... [2021-01-06 17:58:43,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43" (1/1) ... [2021-01-06 17:58:43,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43" (1/1) ... [2021-01-06 17:58:43,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43" (1/1) ... [2021-01-06 17:58:43,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:58:43,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:58:43,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:58:43,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:58:43,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43" (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 17:58:43,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:58:43,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:58:43,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:58:43,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:58:43,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:58:43,819 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-01-06 17:58:43,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:58:43 BoogieIcfgContainer [2021-01-06 17:58:43,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:58:43,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:58:43,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:58:43,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:58:43,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:58:43" (1/3) ... [2021-01-06 17:58:43,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab77669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:58:43, skipping insertion in model container [2021-01-06 17:58:43,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:43" (2/3) ... [2021-01-06 17:58:43,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab77669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:58:43, skipping insertion in model container [2021-01-06 17:58:43,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:58:43" (3/3) ... [2021-01-06 17:58:43,832 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_valuebound100.c [2021-01-06 17:58:43,839 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:58:43,843 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:58:43,892 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:58:43,952 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:58:43,952 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:58:43,953 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:58:43,953 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:58:43,955 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:58:43,955 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:58:43,955 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:58:43,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:58:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2021-01-06 17:58:44,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:58:44,004 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:44,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:58:44,005 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:44,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-01-06 17:58:44,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:44,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976876663] [2021-01-06 17:58:44,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:58:44,225 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 17:58:44,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976876663] [2021-01-06 17:58:44,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:58:44,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:58:44,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564009056] [2021-01-06 17:58:44,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:58:44,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:58:44,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:58:44,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:58:44,253 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2021-01-06 17:58:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:58:44,271 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2021-01-06 17:58:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:58:44,273 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:58:44,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:58:44,283 INFO L225 Difference]: With dead ends: 31 [2021-01-06 17:58:44,284 INFO L226 Difference]: Without dead ends: 13 [2021-01-06 17:58:44,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:58:44,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-01-06 17:58:44,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-01-06 17:58:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-01-06 17:58:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-01-06 17:58:44,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-01-06 17:58:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:58:44,324 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-01-06 17:58:44,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:58:44,325 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-01-06 17:58:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:58:44,325 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:44,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:58:44,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:58:44,326 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:44,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:44,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-01-06 17:58:44,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:44,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845313269] [2021-01-06 17:58:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:44,346 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:58:44,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071789314] [2021-01-06 17:58:44,347 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 17:58:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:58:44,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:58:44,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:58:44,586 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 17:58:44,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845313269] [2021-01-06 17:58:44,587 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:58:44,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071789314] [2021-01-06 17:58:44,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:58:44,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:58:44,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357039616] [2021-01-06 17:58:44,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:58:44,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:58:44,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:58:44,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:58:44,595 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2021-01-06 17:58:44,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:58:44,699 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-01-06 17:58:44,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:58:44,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-01-06 17:58:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:58:44,701 INFO L225 Difference]: With dead ends: 23 [2021-01-06 17:58:44,701 INFO L226 Difference]: Without dead ends: 17 [2021-01-06 17:58:44,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:58:44,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-01-06 17:58:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-01-06 17:58:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 17:58:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-01-06 17:58:44,715 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-01-06 17:58:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:58:44,716 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-01-06 17:58:44,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:58:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-01-06 17:58:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:58:44,717 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:44,717 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:58:44,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:58:44,934 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:44,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:44,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1864186656, now seen corresponding path program 1 times [2021-01-06 17:58:44,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:44,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617742865] [2021-01-06 17:58:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:44,951 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:58:44,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932071027] [2021-01-06 17:58:44,951 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 17:58:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:58:45,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:58:45,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:58:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:58:45,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617742865] [2021-01-06 17:58:45,070 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:58:45,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932071027] [2021-01-06 17:58:45,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:58:45,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:58:45,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183277197] [2021-01-06 17:58:45,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:58:45,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:58:45,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:58:45,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:58:45,073 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2021-01-06 17:58:45,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:58:45,181 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-01-06 17:58:45,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:58:45,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:58:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:58:45,183 INFO L225 Difference]: With dead ends: 26 [2021-01-06 17:58:45,183 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 17:58:45,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:58:45,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 17:58:45,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-01-06 17:58:45,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 17:58:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-01-06 17:58:45,194 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2021-01-06 17:58:45,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:58:45,196 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-01-06 17:58:45,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:58:45,196 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-01-06 17:58:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:58:45,197 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:45,197 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:58:45,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:58:45,411 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:45,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:45,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2052598129, now seen corresponding path program 2 times [2021-01-06 17:58:45,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:45,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505679110] [2021-01-06 17:58:45,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:45,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:58:45,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237713623] [2021-01-06 17:58:45,443 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 17:58:45,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:58:45,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:58:45,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:58:45,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:58:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:58:45,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505679110] [2021-01-06 17:58:45,591 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:58:45,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237713623] [2021-01-06 17:58:45,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:58:45,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:58:45,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325871079] [2021-01-06 17:58:45,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:58:45,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:58:45,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:58:45,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:58:45,594 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2021-01-06 17:58:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:58:45,680 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-01-06 17:58:45,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:58:45,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-01-06 17:58:45,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:58:45,681 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:58:45,682 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:58:45,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:58:45,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:58:45,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-01-06 17:58:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 17:58:45,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-01-06 17:58:45,689 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2021-01-06 17:58:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:58:45,689 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-01-06 17:58:45,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:58:45,689 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-01-06 17:58:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:58:45,690 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:45,690 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:58:45,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:58:45,905 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:45,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:45,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1496534400, now seen corresponding path program 3 times [2021-01-06 17:58:45,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:45,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296807438] [2021-01-06 17:58:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:45,935 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:58:45,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290932506] [2021-01-06 17:58:45,935 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 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 17:58:45,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:58:45,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:58:45,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:58:45,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:58:46,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296807438] [2021-01-06 17:58:46,069 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:58:46,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290932506] [2021-01-06 17:58:46,070 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:58:46,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:58:46,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:58:46,071 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:58:46,071 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:58:46,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:58:46,309 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:58:46,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:58:46 BoogieIcfgContainer [2021-01-06 17:58:46,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:58:46,310 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:58:46,310 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:58:46,310 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:58:46,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:58:43" (3/4) ... [2021-01-06 17:58:46,314 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:58:46,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:58:46,317 INFO L168 Benchmark]: Toolchain (without parser) took 3252.07 ms. Allocated memory was 169.9 MB in the beginning and 210.8 MB in the end (delta: 40.9 MB). Free memory was 144.3 MB in the beginning and 176.5 MB in the end (delta: -32.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:46,317 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 169.9 MB. Free memory is still 140.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:58:46,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.36 ms. Allocated memory is still 169.9 MB. Free memory was 144.1 MB in the beginning and 134.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:46,319 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.70 ms. Allocated memory is still 169.9 MB. Free memory was 134.4 MB in the beginning and 133.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:46,320 INFO L168 Benchmark]: Boogie Preprocessor took 22.28 ms. Allocated memory is still 169.9 MB. Free memory was 133.1 MB in the beginning and 132.1 MB in the end (delta: 999.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:46,321 INFO L168 Benchmark]: RCFGBuilder took 340.95 ms. Allocated memory is still 169.9 MB. Free memory was 131.9 MB in the beginning and 119.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:46,321 INFO L168 Benchmark]: TraceAbstraction took 2485.86 ms. Allocated memory was 169.9 MB in the beginning and 210.8 MB in the end (delta: 40.9 MB). Free memory was 119.4 MB in the beginning and 177.0 MB in the end (delta: -57.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:58:46,322 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 210.8 MB. Free memory was 177.0 MB in the beginning and 176.5 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:46,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 169.9 MB. Free memory is still 140.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 350.36 ms. Allocated memory is still 169.9 MB. Free memory was 144.1 MB in the beginning and 134.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.70 ms. Allocated memory is still 169.9 MB. Free memory was 134.4 MB in the beginning and 133.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.28 ms. Allocated memory is still 169.9 MB. Free memory was 133.1 MB in the beginning and 132.1 MB in the end (delta: 999.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 340.95 ms. Allocated memory is still 169.9 MB. Free memory was 131.9 MB in the beginning and 119.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2485.86 ms. Allocated memory was 169.9 MB in the beginning and 210.8 MB in the end (delta: 40.9 MB). Free memory was 119.4 MB in the beginning and 177.0 MB in the end (delta: -57.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 4.55 ms. Allocated memory is still 210.8 MB. Free memory was 177.0 MB in the beginning and 176.5 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L18] int k; [L19] long long y, x, c; [L20] k = __VERIFIER_nondet_int() [L7] COND FALSE !(!cond) [L23] y = 0 [L24] x = 0 [L25] c = 0 [L27] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y + x [L27] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y + x [L27] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y + x [L27] COND TRUE 1 [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 49 SDslu, 64 SDs, 0 SdLazy, 87 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=4, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1305 SizeOfPredicates, 20 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...