/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/ps4-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:59:27,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:59:27,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:59:27,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:59:27,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:59:27,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:59:27,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:59:27,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:59:27,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:59:27,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:59:27,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:59:27,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:59:27,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:59:27,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:59:27,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:59:27,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:59:27,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:59:27,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:59:27,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:59:27,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:59:27,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:59:27,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:59:27,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:59:27,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:59:27,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:59:27,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:59:27,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:59:27,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:59:27,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:59:27,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:59:27,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:59:27,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:59:27,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:59:27,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:59:27,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:59:27,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:59:27,187 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 17:59:27,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:59:27,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:59:27,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:59:27,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:59:27,241 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:59:27,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:59:27,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:59:27,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:59:27,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:59:27,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:59:27,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:59:27,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:59:27,243 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:59:27,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:59:27,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:59:27,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:59:27,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:59:27,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:59:27,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:59:27,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:59:27,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:59:27,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:59:27,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:59:27,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:59:27,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:59:27,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:59:27,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:59:27,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:59:27,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:59:27,650 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:59:27,651 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:59:27,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound5.c [2021-01-06 17:59:27,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8448a993c/9b01c61a7bb444f484a78cc39e2aa696/FLAG142087d39 [2021-01-06 17:59:28,399 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:59:28,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound5.c [2021-01-06 17:59:28,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8448a993c/9b01c61a7bb444f484a78cc39e2aa696/FLAG142087d39 [2021-01-06 17:59:28,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8448a993c/9b01c61a7bb444f484a78cc39e2aa696 [2021-01-06 17:59:28,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:59:28,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:59:28,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:59:28,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:59:28,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:59:28,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:59:28" (1/1) ... [2021-01-06 17:59:28,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d40312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:28, skipping insertion in model container [2021-01-06 17:59:28,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:59:28" (1/1) ... [2021-01-06 17:59:28,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:59:28,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:59:28,945 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/ps4-ll_unwindbound5.c[458,471] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:59:28,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:59:28,974 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:59:28,988 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/ps4-ll_unwindbound5.c[458,471] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:59:28,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:59:29,017 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:59:29,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29 WrapperNode [2021-01-06 17:59:29,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:59:29,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:59:29,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:59:29,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:59:29,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29" (1/1) ... [2021-01-06 17:59:29,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29" (1/1) ... [2021-01-06 17:59:29,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:59:29,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:59:29,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:59:29,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:59:29,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29" (1/1) ... [2021-01-06 17:59:29,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29" (1/1) ... [2021-01-06 17:59:29,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29" (1/1) ... [2021-01-06 17:59:29,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29" (1/1) ... [2021-01-06 17:59:29,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29" (1/1) ... [2021-01-06 17:59:29,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29" (1/1) ... [2021-01-06 17:59:29,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29" (1/1) ... [2021-01-06 17:59:29,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:59:29,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:59:29,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:59:29,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:59:29,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29" (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 17:59:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:59:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:59:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:59:29,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:59:29,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:59:29,398 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-01-06 17:59:29,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:59:29 BoogieIcfgContainer [2021-01-06 17:59:29,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:59:29,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:59:29,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:59:29,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:59:29,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:59:28" (1/3) ... [2021-01-06 17:59:29,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8c25b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:59:29, skipping insertion in model container [2021-01-06 17:59:29,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:29" (2/3) ... [2021-01-06 17:59:29,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8c25b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:59:29, skipping insertion in model container [2021-01-06 17:59:29,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:59:29" (3/3) ... [2021-01-06 17:59:29,409 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound5.c [2021-01-06 17:59:29,419 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:59:29,424 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-01-06 17:59:29,447 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-06 17:59:29,488 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:59:29,488 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:59:29,488 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:59:29,489 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:59:29,489 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:59:29,489 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:59:29,489 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:59:29,490 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:59:29,508 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-01-06 17:59:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:59:29,515 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:29,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:59:29,517 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:29,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:29,525 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 17:59:29,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:29,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133897741] [2021-01-06 17:59:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:29,750 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:59:29,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601790095] [2021-01-06 17:59:29,751 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 17:59:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:59:29,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 17:59:29,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:59:29,948 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 17:59:29,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133897741] [2021-01-06 17:59:29,950 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:59:29,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601790095] [2021-01-06 17:59:29,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:59:29,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:59:29,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458798755] [2021-01-06 17:59:29,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:59:29,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:59:29,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:59:29,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:59:29,985 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2021-01-06 17:59:30,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:59:30,105 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2021-01-06 17:59:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:59:30,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-06 17:59:30,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:59:30,116 INFO L225 Difference]: With dead ends: 54 [2021-01-06 17:59:30,116 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:59:30,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:59:30,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:59:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-01-06 17:59:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:59:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-01-06 17:59:30,154 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2021-01-06 17:59:30,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:59:30,154 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-01-06 17:59:30,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:59:30,154 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-01-06 17:59:30,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:59:30,155 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:30,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:59:30,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-01-06 17:59:30,370 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:30,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:30,372 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-01-06 17:59:30,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:30,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102990209] [2021-01-06 17:59:30,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:30,390 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:59:30,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445575126] [2021-01-06 17:59:30,391 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 17:59:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:59:30,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:59:30,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:59:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:59:30,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102990209] [2021-01-06 17:59:30,538 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:59:30,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445575126] [2021-01-06 17:59:30,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:59:30,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:59:30,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653173299] [2021-01-06 17:59:30,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:59:30,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:59:30,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:59:30,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:59:30,542 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2021-01-06 17:59:30,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:59:30,600 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-01-06 17:59:30,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:59:30,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:59:30,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:59:30,602 INFO L225 Difference]: With dead ends: 37 [2021-01-06 17:59:30,602 INFO L226 Difference]: Without dead ends: 31 [2021-01-06 17:59:30,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:59:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-01-06 17:59:30,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2021-01-06 17:59:30,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-01-06 17:59:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-01-06 17:59:30,611 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2021-01-06 17:59:30,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:59:30,611 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-01-06 17:59:30,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:59:30,612 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-01-06 17:59:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:59:30,612 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:30,613 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:59:30,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:59:30,826 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:30,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:30,828 INFO L82 PathProgramCache]: Analyzing trace with hash 757648847, now seen corresponding path program 1 times [2021-01-06 17:59:30,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:30,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674419659] [2021-01-06 17:59:30,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:30,842 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:59:30,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992413432] [2021-01-06 17:59:30,843 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 [2021-01-06 17:59:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:59:30,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:59:30,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:59:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:59:30,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674419659] [2021-01-06 17:59:30,941 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:59:30,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992413432] [2021-01-06 17:59:30,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:59:30,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:59:30,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596190191] [2021-01-06 17:59:30,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:59:30,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:59:30,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:59:30,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:59:30,944 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2021-01-06 17:59:30,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:59:30,970 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-01-06 17:59:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:59:30,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 17:59:30,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:59:30,972 INFO L225 Difference]: With dead ends: 30 [2021-01-06 17:59:30,973 INFO L226 Difference]: Without dead ends: 26 [2021-01-06 17:59:30,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:59:30,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-06 17:59:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-01-06 17:59:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-01-06 17:59:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-01-06 17:59:30,986 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 11 [2021-01-06 17:59:30,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:59:30,986 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-01-06 17:59:30,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:59:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-01-06 17:59:30,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:59:30,989 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:30,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:59:31,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:59:31,204 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1997070616, now seen corresponding path program 1 times [2021-01-06 17:59:31,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:31,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670345485] [2021-01-06 17:59:31,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:31,224 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:59:31,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556659793] [2021-01-06 17:59:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:59:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:59:31,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 17:59:31,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:59:31,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670345485] [2021-01-06 17:59:31,322 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:59:31,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556659793] [2021-01-06 17:59:31,323 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:59:31,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:59:31,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:59:31,324 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:59:31,324 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:59:31,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:59:31,567 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:59:31,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:59:31 BoogieIcfgContainer [2021-01-06 17:59:31,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:59:31,569 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:59:31,570 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:59:31,570 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:59:31,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:59:29" (3/4) ... [2021-01-06 17:59:31,575 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:59:31,575 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:59:31,579 INFO L168 Benchmark]: Toolchain (without parser) took 2813.25 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 55.8 MB in the end (delta: 70.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. [2021-01-06 17:59:31,580 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:59:31,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.58 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:59:31,589 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:59:31,590 INFO L168 Benchmark]: Boogie Preprocessor took 22.39 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:59:31,591 INFO L168 Benchmark]: RCFGBuilder took 322.42 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 100.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:59:31,592 INFO L168 Benchmark]: TraceAbstraction took 2166.71 ms. Allocated memory is still 151.0 MB. Free memory was 100.3 MB in the beginning and 55.8 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:59:31,594 INFO L168 Benchmark]: Witness Printer took 6.35 ms. Allocated memory is still 151.0 MB. Free memory is still 55.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:59:31,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.58 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.39 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 322.42 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 100.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2166.71 ms. Allocated memory is still 151.0 MB. Free memory was 100.3 MB in the beginning and 55.8 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. * Witness Printer took 6.35 ms. Allocated memory is still 151.0 MB. Free memory is still 55.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 [L27] EXPR counter++ [L27] COND TRUE counter++<5 [L10] COND FALSE !(!(cond)) [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x [L27] EXPR counter++ [L27] COND TRUE counter++<5 [L10] COND FALSE !(!(cond)) [L30] COND TRUE !(c < k) [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 36 SDslu, 99 SDs, 0 SdLazy, 60 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 839 SizeOfPredicates, 9 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/5 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...