/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/lcm1_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:50:28,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:50:28,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:50:28,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:50:28,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:50:28,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:50:28,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:50:28,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:50:28,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:50:28,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:50:28,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:50:28,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:50:28,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:50:28,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:50:28,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:50:28,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:50:28,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:50:28,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:50:28,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:50:28,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:50:28,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:50:28,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:50:28,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:50:28,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:50:28,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:50:28,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:50:28,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:50:28,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:50:28,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:50:28,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:50:28,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:50:28,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:50:28,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:50:28,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:50:28,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:50:28,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:50:28,535 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 17:50:28,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:50:28,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:50:28,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:50:28,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:50:28,588 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:50:28,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:50:28,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:50:28,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:50:28,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:50:28,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:50:28,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:50:28,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:50:28,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:50:28,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:50:28,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:50:28,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:50:28,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:50:28,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:50:28,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:50:28,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:50:28,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:50:28,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:50:28,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:50:28,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:50:28,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:50:28,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:50:28,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:50:29,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:50:29,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:50:29,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:50:29,008 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:50:29,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound50.c [2021-01-06 17:50:29,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/316deea30/fce297275d5747b180f12bbfe23488f2/FLAGe2bb41045 [2021-01-06 17:50:29,810 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:50:29,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound50.c [2021-01-06 17:50:29,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/316deea30/fce297275d5747b180f12bbfe23488f2/FLAGe2bb41045 [2021-01-06 17:50:30,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/316deea30/fce297275d5747b180f12bbfe23488f2 [2021-01-06 17:50:30,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:50:30,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:50:30,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:50:30,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:50:30,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:50:30,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:50:30" (1/1) ... [2021-01-06 17:50:30,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcd8567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30, skipping insertion in model container [2021-01-06 17:50:30,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:50:30" (1/1) ... [2021-01-06 17:50:30,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:50:30,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:50:30,383 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/lcm1_unwindbound50.c[552,565] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] [2021-01-06 17:50:30,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:50:30,418 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:50:30,433 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/lcm1_unwindbound50.c[552,565] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] [2021-01-06 17:50:30,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:50:30,461 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:50:30,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30 WrapperNode [2021-01-06 17:50:30,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:50:30,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:50:30,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:50:30,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:50:30,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30" (1/1) ... [2021-01-06 17:50:30,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30" (1/1) ... [2021-01-06 17:50:30,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:50:30,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:50:30,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:50:30,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:50:30,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30" (1/1) ... [2021-01-06 17:50:30,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30" (1/1) ... [2021-01-06 17:50:30,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30" (1/1) ... [2021-01-06 17:50:30,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30" (1/1) ... [2021-01-06 17:50:30,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30" (1/1) ... [2021-01-06 17:50:30,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30" (1/1) ... [2021-01-06 17:50:30,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30" (1/1) ... [2021-01-06 17:50:30,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:50:30,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:50:30,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:50:30,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:50:30,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30" (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 17:50:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:50:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:50:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:50:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:50:31,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:50:31,117 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-01-06 17:50:31,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:31 BoogieIcfgContainer [2021-01-06 17:50:31,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:50:31,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:50:31,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:50:31,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:50:31,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:50:30" (1/3) ... [2021-01-06 17:50:31,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cabb0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:50:31, skipping insertion in model container [2021-01-06 17:50:31,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:30" (2/3) ... [2021-01-06 17:50:31,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cabb0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:50:31, skipping insertion in model container [2021-01-06 17:50:31,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:31" (3/3) ... [2021-01-06 17:50:31,130 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound50.c [2021-01-06 17:50:31,138 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:50:31,144 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-01-06 17:50:31,168 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 17:50:31,197 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:50:31,198 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:50:31,198 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:50:31,198 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:50:31,198 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:50:31,198 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:50:31,198 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:50:31,199 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:50:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-01-06 17:50:31,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:50:31,225 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:31,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:31,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:31,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:31,234 INFO L82 PathProgramCache]: Analyzing trace with hash -172276425, now seen corresponding path program 1 times [2021-01-06 17:50:31,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:31,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906019179] [2021-01-06 17:50:31,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:31,424 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 17:50:31,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906019179] [2021-01-06 17:50:31,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:31,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:50:31,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206309780] [2021-01-06 17:50:31,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:50:31,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:31,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:50:31,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:50:31,451 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2021-01-06 17:50:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:31,476 INFO L93 Difference]: Finished difference Result 77 states and 110 transitions. [2021-01-06 17:50:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:50:31,478 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2021-01-06 17:50:31,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:31,490 INFO L225 Difference]: With dead ends: 77 [2021-01-06 17:50:31,491 INFO L226 Difference]: Without dead ends: 36 [2021-01-06 17:50:31,494 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 17:50:31,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-01-06 17:50:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-01-06 17:50:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-01-06 17:50:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-01-06 17:50:31,540 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 14 [2021-01-06 17:50:31,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:31,540 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-01-06 17:50:31,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:50:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-01-06 17:50:31,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:50:31,542 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:31,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:31,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:50:31,543 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:31,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1061593710, now seen corresponding path program 1 times [2021-01-06 17:50:31,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:31,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732988593] [2021-01-06 17:50:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:31,587 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:31,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545406612] [2021-01-06 17:50:31,588 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 17:50:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:31,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:50:31,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:31,988 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 17:50:31,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732988593] [2021-01-06 17:50:31,989 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:31,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545406612] [2021-01-06 17:50:31,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:31,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:50:31,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807980066] [2021-01-06 17:50:31,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:50:31,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:31,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:50:31,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:50:31,993 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 6 states. [2021-01-06 17:50:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:32,327 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2021-01-06 17:50:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:50:32,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 17:50:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:32,332 INFO L225 Difference]: With dead ends: 72 [2021-01-06 17:50:32,332 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:50:32,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:32,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:50:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2021-01-06 17:50:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 17:50:32,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2021-01-06 17:50:32,349 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 14 [2021-01-06 17:50:32,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:32,350 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2021-01-06 17:50:32,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:50:32,350 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2021-01-06 17:50:32,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:50:32,351 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:32,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:32,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:50:32,567 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:32,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:32,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1450344358, now seen corresponding path program 1 times [2021-01-06 17:50:32,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:32,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362683746] [2021-01-06 17:50:32,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:32,589 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:32,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081626613] [2021-01-06 17:50:32,590 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 17:50:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:32,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:50:32,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:32,688 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 17:50:32,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362683746] [2021-01-06 17:50:32,689 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:32,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081626613] [2021-01-06 17:50:32,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:32,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:50:32,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169158481] [2021-01-06 17:50:32,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:50:32,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:32,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:50:32,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:50:32,692 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 4 states. [2021-01-06 17:50:32,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:32,713 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2021-01-06 17:50:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:50:32,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-01-06 17:50:32,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:32,716 INFO L225 Difference]: With dead ends: 58 [2021-01-06 17:50:32,716 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:50:32,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:50:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:50:32,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-01-06 17:50:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 17:50:32,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2021-01-06 17:50:32,727 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 15 [2021-01-06 17:50:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:32,727 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2021-01-06 17:50:32,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:50:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2021-01-06 17:50:32,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:50:32,728 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:32,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:32,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:32,944 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:32,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2089044929, now seen corresponding path program 1 times [2021-01-06 17:50:32,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:32,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052189778] [2021-01-06 17:50:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:32,977 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:32,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075082365] [2021-01-06 17:50:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true