/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/ps3-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 08:04:39,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 08:04:39,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 08:04:39,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 08:04:39,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 08:04:39,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 08:04:39,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 08:04:39,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 08:04:39,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 08:04:39,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 08:04:39,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 08:04:39,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 08:04:39,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 08:04:39,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 08:04:39,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 08:04:39,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 08:04:39,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 08:04:39,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 08:04:39,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 08:04:39,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 08:04:39,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 08:04:39,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 08:04:39,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 08:04:39,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 08:04:39,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 08:04:39,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 08:04:39,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 08:04:39,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 08:04:39,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 08:04:39,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 08:04:39,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 08:04:39,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 08:04:39,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 08:04:39,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 08:04:39,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 08:04:39,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 08:04:39,854 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 08:04:39,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 08:04:39,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 08:04:39,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 08:04:39,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 08:04:39,885 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 08:04:39,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 08:04:39,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 08:04:39,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 08:04:39,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 08:04:39,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 08:04:39,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 08:04:39,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 08:04:39,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 08:04:39,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 08:04:39,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 08:04:39,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 08:04:39,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 08:04:39,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:04:39,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 08:04:39,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 08:04:39,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 08:04:39,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 08:04:39,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 08:04:39,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 08:04:39,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 08:04:39,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 08:04:40,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 08:04:40,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 08:04:40,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 08:04:40,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 08:04:40,295 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 08:04:40,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound2.c [2020-12-23 08:04:40,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d4406e88e/e5bbe22df70a4a809922070f75929c3c/FLAG4d2cc53a6 [2020-12-23 08:04:41,023 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 08:04:41,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound2.c [2020-12-23 08:04:41,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d4406e88e/e5bbe22df70a4a809922070f75929c3c/FLAG4d2cc53a6 [2020-12-23 08:04:41,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d4406e88e/e5bbe22df70a4a809922070f75929c3c [2020-12-23 08:04:41,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 08:04:41,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 08:04:41,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 08:04:41,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 08:04:41,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 08:04:41,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:04:41" (1/1) ... [2020-12-23 08:04:41,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484a01f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41, skipping insertion in model container [2020-12-23 08:04:41,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:04:41" (1/1) ... [2020-12-23 08:04:41,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 08:04:41,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 08:04:41,702 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/ps3-ll_valuebound2.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,] [2020-12-23 08:04:41,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:04:41,745 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 08:04:41,761 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/ps3-ll_valuebound2.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,] [2020-12-23 08:04:41,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:04:41,792 INFO L208 MainTranslator]: Completed translation [2020-12-23 08:04:41,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41 WrapperNode [2020-12-23 08:04:41,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 08:04:41,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 08:04:41,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 08:04:41,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 08:04:41,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41" (1/1) ... [2020-12-23 08:04:41,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41" (1/1) ... [2020-12-23 08:04:41,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 08:04:41,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 08:04:41,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 08:04:41,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 08:04:41,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41" (1/1) ... [2020-12-23 08:04:41,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41" (1/1) ... [2020-12-23 08:04:41,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41" (1/1) ... [2020-12-23 08:04:41,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41" (1/1) ... [2020-12-23 08:04:41,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41" (1/1) ... [2020-12-23 08:04:41,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41" (1/1) ... [2020-12-23 08:04:41,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41" (1/1) ... [2020-12-23 08:04:41,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 08:04:41,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 08:04:41,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 08:04:41,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 08:04:41,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41" (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 08:04:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 08:04:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 08:04:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 08:04:41,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 08:04:42,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 08:04:42,357 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-23 08:04:42,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:04:42 BoogieIcfgContainer [2020-12-23 08:04:42,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 08:04:42,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 08:04:42,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 08:04:42,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 08:04:42,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:04:41" (1/3) ... [2020-12-23 08:04:42,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caeeff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:04:42, skipping insertion in model container [2020-12-23 08:04:42,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:41" (2/3) ... [2020-12-23 08:04:42,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caeeff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:04:42, skipping insertion in model container [2020-12-23 08:04:42,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:04:42" (3/3) ... [2020-12-23 08:04:42,404 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_valuebound2.c [2020-12-23 08:04:42,425 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 08:04:42,434 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 08:04:42,491 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 08:04:42,533 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 08:04:42,533 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 08:04:42,533 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 08:04:42,534 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 08:04:42,534 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 08:04:42,534 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 08:04:42,534 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 08:04:42,534 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 08:04:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-23 08:04:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 08:04:42,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:42,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:04:42,552 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:42,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-23 08:04:42,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:42,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975396023] [2020-12-23 08:04:42,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:04:42,731 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 08:04:42,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975396023] [2020-12-23 08:04:42,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:04:42,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 08:04:42,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510249453] [2020-12-23 08:04:42,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 08:04:42,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:04:42,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 08:04:42,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:04:42,758 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-12-23 08:04:42,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:04:42,777 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2020-12-23 08:04:42,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 08:04:42,778 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 08:04:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:04:42,788 INFO L225 Difference]: With dead ends: 31 [2020-12-23 08:04:42,788 INFO L226 Difference]: Without dead ends: 13 [2020-12-23 08:04:42,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:04:42,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-23 08:04:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-23 08:04:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-23 08:04:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-23 08:04:42,831 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-12-23 08:04:42,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:04:42,831 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-23 08:04:42,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 08:04:42,832 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-23 08:04:42,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 08:04:42,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:42,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:04:42,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 08:04:42,833 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:42,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:42,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-23 08:04:42,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:42,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113227788] [2020-12-23 08:04:42,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:42,855 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:04:42,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644454062] [2020-12-23 08:04:42,856 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 08:04:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:04:42,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 08:04:42,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:04:43,075 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 08:04:43,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113227788] [2020-12-23 08:04:43,076 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:04:43,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644454062] [2020-12-23 08:04:43,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:04:43,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 08:04:43,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761951599] [2020-12-23 08:04:43,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:04:43,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:04:43,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:04:43,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:04:43,080 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-12-23 08:04:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:04:43,411 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-12-23 08:04:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:04:43,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-23 08:04:43,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:04:43,413 INFO L225 Difference]: With dead ends: 23 [2020-12-23 08:04:43,413 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 08:04:43,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:04:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 08:04:43,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-12-23 08:04:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 08:04:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-23 08:04:43,420 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-12-23 08:04:43,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:04:43,420 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-23 08:04:43,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:04:43,421 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-23 08:04:43,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 08:04:43,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:43,421 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:04:43,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 08:04:43,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:43,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:43,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1864186656, now seen corresponding path program 1 times [2020-12-23 08:04:43,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:43,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110893655] [2020-12-23 08:04:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:43,652 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:04:43,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207448124] [2020-12-23 08:04:43,653 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 08:04:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:04:43,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 08:04:43,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:04:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:04:43,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110893655] [2020-12-23 08:04:43,759 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:04:43,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207448124] [2020-12-23 08:04:43,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:04:43,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:04:43,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890467462] [2020-12-23 08:04:43,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:04:43,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:04:43,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:04:43,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:04:43,762 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-12-23 08:04:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:04:43,881 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-12-23 08:04:43,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 08:04:43,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-23 08:04:43,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:04:43,883 INFO L225 Difference]: With dead ends: 26 [2020-12-23 08:04:43,883 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 08:04:43,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-23 08:04:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 08:04:43,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-12-23 08:04:43,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 08:04:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-23 08:04:43,899 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-12-23 08:04:43,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:04:43,900 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-23 08:04:43,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:04:43,900 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-23 08:04:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 08:04:43,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:43,901 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:04:44,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:04:44,115 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:44,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2052598129, now seen corresponding path program 2 times [2020-12-23 08:04:44,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:44,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390735196] [2020-12-23 08:04:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:44,136 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:04:44,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180332503] [2020-12-23 08:04:44,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:04:44,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:04:44,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:04:44,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 08:04:44,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:04:44,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390735196] [2020-12-23 08:04:44,290 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:04:44,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180332503] [2020-12-23 08:04:44,291 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 08:04:44,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:04:44,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 08:04:44,293 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 08:04:44,293 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 08:04:44,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:04:44,525 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 08:04:44,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:04:44 BoogieIcfgContainer [2020-12-23 08:04:44,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 08:04:44,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 08:04:44,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 08:04:44,527 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 08:04:44,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:04:42" (3/4) ... [2020-12-23 08:04:44,532 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 08:04:44,532 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 08:04:44,535 INFO L168 Benchmark]: Toolchain (without parser) took 3109.74 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 60.6 MB in the end (delta: 69.7 MB). Peak memory consumption was 70.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:44,538 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory was 127.9 MB in the beginning and 127.8 MB in the end (delta: 83.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:04:44,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.76 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 120.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:44,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.61 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 118.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:44,549 INFO L168 Benchmark]: Boogie Preprocessor took 24.12 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 117.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:44,550 INFO L168 Benchmark]: RCFGBuilder took 505.19 ms. Allocated memory is still 155.2 MB. Free memory was 117.8 MB in the beginning and 105.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:44,551 INFO L168 Benchmark]: TraceAbstraction took 2160.85 ms. Allocated memory is still 155.2 MB. Free memory was 105.3 MB in the beginning and 60.6 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.8 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:44,551 INFO L168 Benchmark]: Witness Printer took 5.40 ms. Allocated memory is still 155.2 MB. Free memory is still 60.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:04:44,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory was 127.9 MB in the beginning and 127.8 MB in the end (delta: 83.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 364.76 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 120.3 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 38.61 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 118.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.12 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 117.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 505.19 ms. Allocated memory is still 155.2 MB. Free memory was 117.8 MB in the beginning and 105.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2160.85 ms. Allocated memory is still 155.2 MB. Free memory was 105.3 MB in the beginning and 60.6 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.8 MB. Max. memory is 8.0 GB. * Witness Printer took 5.40 ms. Allocated memory is still 155.2 MB. Free memory is still 60.6 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: [L18] short k; [L19] long long y, x, c; [L20] k = __VERIFIER_nondet_short() [L7] COND FALSE !(!cond) [L23] y = 0 [L24] x = 0 [L25] c = 0 [L27] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y + x [L27] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y + x [L27] COND TRUE 1 [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 41 SDslu, 35 SDs, 0 SdLazy, 45 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 543 SizeOfPredicates, 12 NumberOfNonLiveVariables, 118 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...