/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/cohencu-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:22:19,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:22:19,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:22:19,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:22:19,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:22:19,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:22:19,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:22:19,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:22:19,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:22:19,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:22:19,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:22:19,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:22:19,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:22:19,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:22:19,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:22:19,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:22:19,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:22:19,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:22:19,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:22:19,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:22:19,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:22:19,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:22:19,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:22:19,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:22:19,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:22:19,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:22:19,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:22:19,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:22:19,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:22:19,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:22:19,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:22:19,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:22:19,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:22:19,623 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:22:19,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:22:19,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:22:19,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:22:19,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:22:19,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:22:19,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:22:19,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:22:19,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:22:19,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:22:19,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:22:19,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:22:19,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:22:19,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:22:19,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:22:19,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:22:19,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:22:19,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:22:19,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:22:19,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:22:19,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:22:19,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:22:20,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:22:20,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:22:20,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:22:20,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:22:20,109 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:22:20,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2020-12-23 07:22:20,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d939f507/7a2c39f100d64ea493b0e9e97ef5ba31/FLAGafd5d6e36 [2020-12-23 07:22:20,772 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:22:20,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2020-12-23 07:22:20,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d939f507/7a2c39f100d64ea493b0e9e97ef5ba31/FLAGafd5d6e36 [2020-12-23 07:22:21,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d939f507/7a2c39f100d64ea493b0e9e97ef5ba31 [2020-12-23 07:22:21,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:22:21,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:22:21,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:22:21,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:22:21,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:22:21,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:22:21" (1/1) ... [2020-12-23 07:22:21,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b6f1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21, skipping insertion in model container [2020-12-23 07:22:21,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:22:21" (1/1) ... [2020-12-23 07:22:21,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:22:21,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:22:21,335 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/cohencu-ll_unwindbound1.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~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[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~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[~z~0,] [2020-12-23 07:22:21,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:22:21,391 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:22:21,408 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/cohencu-ll_unwindbound1.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~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[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~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[~z~0,] [2020-12-23 07:22:21,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:22:21,467 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:22:21,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21 WrapperNode [2020-12-23 07:22:21,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:22:21,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:22:21,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:22:21,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:22:21,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21" (1/1) ... [2020-12-23 07:22:21,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21" (1/1) ... [2020-12-23 07:22:21,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:22:21,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:22:21,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:22:21,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:22:21,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21" (1/1) ... [2020-12-23 07:22:21,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21" (1/1) ... [2020-12-23 07:22:21,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21" (1/1) ... [2020-12-23 07:22:21,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21" (1/1) ... [2020-12-23 07:22:21,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21" (1/1) ... [2020-12-23 07:22:21,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21" (1/1) ... [2020-12-23 07:22:21,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21" (1/1) ... [2020-12-23 07:22:21,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:22:21,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:22:21,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:22:21,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:22:21,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:22:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:22:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:22:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:22:21,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:22:22,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:22:22,239 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-23 07:22:22,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:22:22 BoogieIcfgContainer [2020-12-23 07:22:22,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:22:22,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:22:22,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:22:22,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:22:22,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:22:21" (1/3) ... [2020-12-23 07:22:22,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edf2907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:22:22, skipping insertion in model container [2020-12-23 07:22:22,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:21" (2/3) ... [2020-12-23 07:22:22,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edf2907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:22:22, skipping insertion in model container [2020-12-23 07:22:22,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:22:22" (3/3) ... [2020-12-23 07:22:22,251 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound1.c [2020-12-23 07:22:22,260 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:22:22,265 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 07:22:22,288 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 07:22:22,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:22:22,317 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:22:22,318 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:22:22,318 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:22:22,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:22:22,318 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:22:22,318 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:22:22,318 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:22:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-12-23 07:22:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 07:22:22,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:22,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 07:22:22,347 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:22,354 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-23 07:22:22,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:22,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603593867] [2020-12-23 07:22:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:22,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603593867] [2020-12-23 07:22:22,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:22,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:22:22,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877833159] [2020-12-23 07:22:22,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:22:22,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:22,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:22:22,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:22:22,744 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-12-23 07:22:23,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:23,023 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2020-12-23 07:22:23,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:22:23,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 07:22:23,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:23,038 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:22:23,039 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 07:22:23,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:22:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 07:22:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-23 07:22:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 07:22:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-23 07:22:23,102 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2020-12-23 07:22:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:23,103 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-23 07:22:23,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:22:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-23 07:22:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:22:23,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:23,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:23,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:22:23,106 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:23,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:23,108 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-23 07:22:23,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:23,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644485205] [2020-12-23 07:22:23,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:23,135 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:23,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186400317] [2020-12-23 07:22:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:23,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:22:23,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:23,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644485205] [2020-12-23 07:22:23,281 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:23,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186400317] [2020-12-23 07:22:23,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:23,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:22:23,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739375641] [2020-12-23 07:22:23,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:22:23,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:23,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:22:23,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:23,288 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-12-23 07:22:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:23,535 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2020-12-23 07:22:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:22:23,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-23 07:22:23,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:23,540 INFO L225 Difference]: With dead ends: 90 [2020-12-23 07:22:23,541 INFO L226 Difference]: Without dead ends: 82 [2020-12-23 07:22:23,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:23,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-23 07:22:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2020-12-23 07:22:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:22:23,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-12-23 07:22:23,581 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 8 [2020-12-23 07:22:23,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:23,582 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-12-23 07:22:23,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:22:23,583 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-12-23 07:22:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:22:23,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:23,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:23,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:22:23,792 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:23,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2020-12-23 07:22:23,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:23,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637916839] [2020-12-23 07:22:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:23,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637916839] [2020-12-23 07:22:23,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:23,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:22:23,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226590743] [2020-12-23 07:22:23,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:22:23,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:23,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:22:23,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:22:23,873 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 4 states. [2020-12-23 07:22:23,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:23,909 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2020-12-23 07:22:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:22:23,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 07:22:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:23,911 INFO L225 Difference]: With dead ends: 84 [2020-12-23 07:22:23,911 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:22:23,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:22:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:22:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-23 07:22:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:22:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-12-23 07:22:23,928 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 9 [2020-12-23 07:22:23,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:23,929 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-12-23 07:22:23,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:22:23,929 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-12-23 07:22:23,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:22:23,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:23,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:23,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:22:23,931 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:23,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:23,931 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-23 07:22:23,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:23,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752524503] [2020-12-23 07:22:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:23,948 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:23,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022469844] [2020-12-23 07:22:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:23,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:22:23,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:24,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752524503] [2020-12-23 07:22:24,086 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:24,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022469844] [2020-12-23 07:22:24,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:24,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:22:24,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824925053] [2020-12-23 07:22:24,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:22:24,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:24,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:22:24,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:24,090 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 6 states. [2020-12-23 07:22:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:24,233 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2020-12-23 07:22:24,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:22:24,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-23 07:22:24,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:24,235 INFO L225 Difference]: With dead ends: 78 [2020-12-23 07:22:24,235 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 07:22:24,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 07:22:24,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-23 07:22:24,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:22:24,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-23 07:22:24,245 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 10 [2020-12-23 07:22:24,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:24,246 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-23 07:22:24,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:22:24,246 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-23 07:22:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:22:24,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:24,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:24,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:24,461 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:24,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:24,463 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2020-12-23 07:22:24,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:24,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724951940] [2020-12-23 07:22:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:24,479 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:24,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344935207] [2020-12-23 07:22:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:24,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:22:24,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:24,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724951940] [2020-12-23 07:22:24,622 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:24,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344935207] [2020-12-23 07:22:24,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:24,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:22:24,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346705834] [2020-12-23 07:22:24,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:22:24,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:24,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:22:24,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:24,625 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-12-23 07:22:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:24,763 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2020-12-23 07:22:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:22:24,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 07:22:24,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:24,764 INFO L225 Difference]: With dead ends: 77 [2020-12-23 07:22:24,764 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:22:24,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:24,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:22:24,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-12-23 07:22:24,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 07:22:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-12-23 07:22:24,772 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2020-12-23 07:22:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:24,772 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-12-23 07:22:24,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:22:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-12-23 07:22:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:22:24,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:24,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:24,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:24,989 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:24,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:24,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2020-12-23 07:22:24,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:24,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329050080] [2020-12-23 07:22:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:25,003 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:25,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220543784] [2020-12-23 07:22:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:25,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:22:25,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:25,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329050080] [2020-12-23 07:22:25,121 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:25,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220543784] [2020-12-23 07:22:25,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:25,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:22:25,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85236894] [2020-12-23 07:22:25,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:22:25,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:25,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:22:25,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:22:25,124 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 5 states. [2020-12-23 07:22:25,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:25,146 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2020-12-23 07:22:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:22:25,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-23 07:22:25,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:25,148 INFO L225 Difference]: With dead ends: 80 [2020-12-23 07:22:25,148 INFO L226 Difference]: Without dead ends: 38 [2020-12-23 07:22:25,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-23 07:22:25,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-23 07:22:25,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 07:22:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 37 transitions. [2020-12-23 07:22:25,154 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 37 transitions. Word has length 20 [2020-12-23 07:22:25,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:25,154 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 37 transitions. [2020-12-23 07:22:25,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:22:25,154 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2020-12-23 07:22:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 07:22:25,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:25,155 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:25,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:25,364 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:25,365 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2020-12-23 07:22:25,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:25,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078302991] [2020-12-23 07:22:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:25,378 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:25,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057662313] [2020-12-23 07:22:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:22:25,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:22:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:22:25,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:22:25,490 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 07:22:25,491 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:22:25,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:22:25,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:22:25 BoogieIcfgContainer [2020-12-23 07:22:25,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:22:25,742 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:22:25,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:22:25,743 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:22:25,743 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:22:22" (3/4) ... [2020-12-23 07:22:25,746 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 07:22:25,801 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c-witness.graphml [2020-12-23 07:22:25,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:22:25,805 INFO L168 Benchmark]: Toolchain (without parser) took 4655.43 ms. Allocated memory was 164.6 MB in the beginning and 212.9 MB in the end (delta: 48.2 MB). Free memory was 139.3 MB in the beginning and 100.5 MB in the end (delta: 38.8 MB). Peak memory consumption was 87.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:22:25,805 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 164.6 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:22:25,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.38 ms. Allocated memory is still 164.6 MB. Free memory was 139.1 MB in the beginning and 129.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:22:25,807 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.66 ms. Allocated memory is still 164.6 MB. Free memory was 128.8 MB in the beginning and 127.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:22:25,808 INFO L168 Benchmark]: Boogie Preprocessor took 27.54 ms. Allocated memory is still 164.6 MB. Free memory was 127.2 MB in the beginning and 125.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:22:25,808 INFO L168 Benchmark]: RCFGBuilder took 699.93 ms. Allocated memory is still 164.6 MB. Free memory was 125.9 MB in the beginning and 142.8 MB in the end (delta: -16.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:22:25,809 INFO L168 Benchmark]: TraceAbstraction took 3498.82 ms. Allocated memory was 164.6 MB in the beginning and 212.9 MB in the end (delta: 48.2 MB). Free memory was 142.3 MB in the beginning and 103.1 MB in the end (delta: 39.2 MB). Peak memory consumption was 88.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:22:25,810 INFO L168 Benchmark]: Witness Printer took 59.23 ms. Allocated memory is still 212.9 MB. Free memory was 103.1 MB in the beginning and 100.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:22:25,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 164.6 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 318.38 ms. Allocated memory is still 164.6 MB. Free memory was 139.1 MB in the beginning and 129.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.66 ms. Allocated memory is still 164.6 MB. Free memory was 128.8 MB in the beginning and 127.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.54 ms. Allocated memory is still 164.6 MB. Free memory was 127.2 MB in the beginning and 125.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 699.93 ms. Allocated memory is still 164.6 MB. Free memory was 125.9 MB in the beginning and 142.8 MB in the end (delta: -16.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3498.82 ms. Allocated memory was 164.6 MB in the beginning and 212.9 MB in the end (delta: 48.2 MB). Free memory was 142.3 MB in the beginning and 103.1 MB in the end (delta: 39.2 MB). Peak memory consumption was 88.5 MB. Max. memory is 8.0 GB. * Witness Printer took 59.23 ms. Allocated memory is still 212.9 MB. Free memory was 103.1 MB in the beginning and 100.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<1 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND TRUE !(cond) VAL [counter=2] [L17] reach_error() VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 194 SDtfs, 223 SDslu, 296 SDs, 0 SdLazy, 303 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 30 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 2975 SizeOfPredicates, 20 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 4/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...