/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/hard-u_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:54:06,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:54:06,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:54:06,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:54:06,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:54:06,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:54:06,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:54:06,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:54:06,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:54:06,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:54:06,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:54:06,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:54:06,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:54:06,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:54:06,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:54:06,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:54:06,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:54:06,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:54:06,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:54:06,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:54:06,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:54:06,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:54:06,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:54:06,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:54:06,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:54:06,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:54:06,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:54:06,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:54:06,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:54:07,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:54:07,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:54:07,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:54:07,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:54:07,020 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:54:07,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:54:07,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:54:07,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:54:07,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:54:07,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:54:07,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:54:07,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:54:07,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:54:07,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:54:07,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:54:07,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:54:07,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:54:07,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:54:07,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:54:07,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:54:07,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:54:07,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:54:07,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:54:07,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:54:07,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:54:07,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:54:07,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:54:07,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:54:07,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:54:07,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:54:07,548 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:54:07,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c [2020-12-23 07:54:07,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e24fb2cfe/2cf649972fd541388be5c2f14cf63cb9/FLAG96f1b7ea3 [2020-12-23 07:54:08,236 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:54:08,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c [2020-12-23 07:54:08,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e24fb2cfe/2cf649972fd541388be5c2f14cf63cb9/FLAG96f1b7ea3 [2020-12-23 07:54:08,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e24fb2cfe/2cf649972fd541388be5c2f14cf63cb9 [2020-12-23 07:54:08,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:54:08,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:54:08,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:54:08,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:54:08,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:54:08,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21741559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08, skipping insertion in model container [2020-12-23 07:54:08,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:54:08,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:54:08,815 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/hard-u_unwindbound2.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:54:08,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:54:08,879 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:54:08,900 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/hard-u_unwindbound2.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:54:08,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:54:08,955 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:54:08,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08 WrapperNode [2020-12-23 07:54:08,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:54:08,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:54:08,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:54:08,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:54:08,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:08,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:09,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:54:09,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:54:09,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:54:09,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:54:09,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:09,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:09,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:09,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:09,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:09,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:09,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... [2020-12-23 07:54:09,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:54:09,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:54:09,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:54:09,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:54:09,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:54:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:54:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:54:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:54:09,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:54:09,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:54:09,835 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-23 07:54:09,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:09 BoogieIcfgContainer [2020-12-23 07:54:09,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:54:09,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:54:09,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:54:09,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:54:09,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:54:08" (1/3) ... [2020-12-23 07:54:09,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c98151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:09, skipping insertion in model container [2020-12-23 07:54:09,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:08" (2/3) ... [2020-12-23 07:54:09,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c98151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:09, skipping insertion in model container [2020-12-23 07:54:09,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:09" (3/3) ... [2020-12-23 07:54:09,856 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound2.c [2020-12-23 07:54:09,865 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:54:09,871 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:54:09,899 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:54:09,949 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:54:09,949 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:54:09,949 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:54:09,949 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:54:09,949 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:54:09,950 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:54:09,950 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:54:09,950 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:54:09,973 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 07:54:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:54:09,981 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:09,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:09,982 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:09,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:09,991 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-23 07:54:10,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:10,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911490490] [2020-12-23 07:54:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:10,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911490490] [2020-12-23 07:54:10,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:10,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:54:10,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551405865] [2020-12-23 07:54:10,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:54:10,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:10,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:54:10,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:54:10,272 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 07:54:10,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:10,295 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-23 07:54:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:54:10,297 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 07:54:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:10,309 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:54:10,310 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:54:10,313 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 07:54:10,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:54:10,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:54:10,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:54:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 07:54:10,355 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-23 07:54:10,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:10,356 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 07:54:10,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:54:10,356 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 07:54:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:54:10,357 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:10,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:10,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:54:10,358 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:10,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:10,359 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-23 07:54:10,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:10,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574477344] [2020-12-23 07:54:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:10,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574477344] [2020-12-23 07:54:10,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:10,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:54:10,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198741081] [2020-12-23 07:54:10,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:54:10,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:10,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:54:10,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:10,503 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-23 07:54:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:10,629 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-23 07:54:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:54:10,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 07:54:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:10,632 INFO L225 Difference]: With dead ends: 61 [2020-12-23 07:54:10,632 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:54:10,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:54:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:54:10,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-23 07:54:10,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:54:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:54:10,642 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-23 07:54:10,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:10,642 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:54:10,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:54:10,642 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:54:10,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:54:10,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:10,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:10,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:54:10,644 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:10,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:10,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-23 07:54:10,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:10,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114709210] [2020-12-23 07:54:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:10,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114709210] [2020-12-23 07:54:10,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:10,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:54:10,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45645657] [2020-12-23 07:54:10,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:54:10,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:10,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:54:10,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:10,724 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-23 07:54:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:10,747 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-23 07:54:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:54:10,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 07:54:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:10,749 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:54:10,749 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:54:10,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:54:10,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:54:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:54:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 07:54:10,759 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-23 07:54:10,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:10,759 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 07:54:10,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:54:10,760 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 07:54:10,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:54:10,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:10,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:10,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:54:10,761 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:10,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-23 07:54:10,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:10,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661408903] [2020-12-23 07:54:10,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:10,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661408903] [2020-12-23 07:54:10,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:10,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:54:10,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376392186] [2020-12-23 07:54:10,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:54:10,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:10,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:54:10,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:54:10,880 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-23 07:54:11,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:11,044 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-23 07:54:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:54:11,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 07:54:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:11,047 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:54:11,047 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:54:11,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:54:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:54:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:54:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:54:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:54:11,058 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-23 07:54:11,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:11,058 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:54:11,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:54:11,058 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:54:11,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:54:11,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:11,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:11,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 07:54:11,060 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:11,061 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-23 07:54:11,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:11,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724643944] [2020-12-23 07:54:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:11,080 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:11,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080624488] [2020-12-23 07:54:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:11,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:54:11,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:11,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724643944] [2020-12-23 07:54:11,358 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:11,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080624488] [2020-12-23 07:54:11,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:11,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:54:11,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940508400] [2020-12-23 07:54:11,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:54:11,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:11,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:54:11,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:11,366 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-23 07:54:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:11,733 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-23 07:54:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:54:11,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 07:54:11,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:11,739 INFO L225 Difference]: With dead ends: 81 [2020-12-23 07:54:11,740 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 07:54:11,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:54:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 07:54:11,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-23 07:54:11,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:54:11,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-23 07:54:11,759 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-23 07:54:11,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:11,760 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-23 07:54:11,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:54:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-23 07:54:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:54:11,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:11,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:11,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:11,978 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:11,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:11,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-23 07:54:11,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:11,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270299218] [2020-12-23 07:54:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:12,001 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:12,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562826282] [2020-12-23 07:54:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:12,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:54:12,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:12,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270299218] [2020-12-23 07:54:12,250 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:12,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562826282] [2020-12-23 07:54:12,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:12,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:54:12,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304285816] [2020-12-23 07:54:12,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:54:12,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:12,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:54:12,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:54:12,253 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-23 07:54:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:12,590 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-23 07:54:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:54:12,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-23 07:54:12,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:12,592 INFO L225 Difference]: With dead ends: 53 [2020-12-23 07:54:12,592 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 07:54:12,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:54:12,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 07:54:12,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-23 07:54:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 07:54:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-23 07:54:12,600 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-23 07:54:12,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:12,600 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-23 07:54:12,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:54:12,600 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-23 07:54:12,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:54:12,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:12,601 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:12,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:12,815 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:12,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:12,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-23 07:54:12,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:12,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914460437] [2020-12-23 07:54:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:12,846 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:12,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820672614] [2020-12-23 07:54:12,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:12,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:54:12,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:12,954 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 07:54:12,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914460437] [2020-12-23 07:54:12,954 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:12,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820672614] [2020-12-23 07:54:12,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:12,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:54:12,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281800821] [2020-12-23 07:54:12,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:54:12,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:12,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:54:12,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:54:12,963 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-23 07:54:13,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:13,005 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-23 07:54:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:54:13,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 07:54:13,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:13,006 INFO L225 Difference]: With dead ends: 62 [2020-12-23 07:54:13,007 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 07:54:13,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:13,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 07:54:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-23 07:54:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 07:54:13,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-23 07:54:13,030 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-23 07:54:13,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:13,030 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-23 07:54:13,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:54:13,030 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-23 07:54:13,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:54:13,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:13,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:13,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:13,250 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:13,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:13,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-23 07:54:13,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:13,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515660597] [2020-12-23 07:54:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:13,272 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:13,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959433068] [2020-12-23 07:54:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:13,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:54:13,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:13,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515660597] [2020-12-23 07:54:13,632 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:13,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959433068] [2020-12-23 07:54:13,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:13,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:54:13,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980320331] [2020-12-23 07:54:13,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:54:13,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:54:13,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:54:13,635 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-12-23 07:54:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:14,079 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-12-23 07:54:14,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:54:14,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-23 07:54:14,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:14,081 INFO L225 Difference]: With dead ends: 83 [2020-12-23 07:54:14,081 INFO L226 Difference]: Without dead ends: 71 [2020-12-23 07:54:14,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:54:14,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-23 07:54:14,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2020-12-23 07:54:14,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 07:54:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-23 07:54:14,091 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-12-23 07:54:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:14,091 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-23 07:54:14,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:54:14,091 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-23 07:54:14,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 07:54:14,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:14,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:14,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:14,301 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:14,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:14,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-23 07:54:14,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:14,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424431884] [2020-12-23 07:54:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:14,321 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:14,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562935206] [2020-12-23 07:54:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:14,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:54:14,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:14,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424431884] [2020-12-23 07:54:14,440 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:14,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562935206] [2020-12-23 07:54:14,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:14,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:54:14,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447045429] [2020-12-23 07:54:14,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:54:14,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:14,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:54:14,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:14,442 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 6 states. [2020-12-23 07:54:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:14,470 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-12-23 07:54:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:54:14,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-12-23 07:54:14,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:14,471 INFO L225 Difference]: With dead ends: 65 [2020-12-23 07:54:14,471 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 07:54:14,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:54:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 07:54:14,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-12-23 07:54:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:54:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-12-23 07:54:14,478 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 24 [2020-12-23 07:54:14,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:14,479 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-12-23 07:54:14,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:54:14,479 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-12-23 07:54:14,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 07:54:14,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:14,480 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:14,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:14,696 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:14,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:14,697 INFO L82 PathProgramCache]: Analyzing trace with hash 596513120, now seen corresponding path program 1 times [2020-12-23 07:54:14,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:14,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116261444] [2020-12-23 07:54:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:14,710 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:14,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322309652] [2020-12-23 07:54:14,710 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:14,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:54:14,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:15,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116261444] [2020-12-23 07:54:15,068 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:15,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322309652] [2020-12-23 07:54:15,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:15,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:54:15,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678916201] [2020-12-23 07:54:15,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:54:15,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:15,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:54:15,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:54:15,079 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 8 states. [2020-12-23 07:54:15,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:15,477 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-12-23 07:54:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:54:15,477 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-23 07:54:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:15,478 INFO L225 Difference]: With dead ends: 47 [2020-12-23 07:54:15,478 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 07:54:15,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:54:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 07:54:15,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2020-12-23 07:54:15,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:54:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-12-23 07:54:15,485 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 25 [2020-12-23 07:54:15,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:15,486 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-12-23 07:54:15,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:54:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-12-23 07:54:15,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:54:15,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:15,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:15,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:15,702 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-23 07:54:15,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:15,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415682765] [2020-12-23 07:54:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:15,717 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:15,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247680782] [2020-12-23 07:54:15,717 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:54:15,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:54:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:54:15,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:54:15,855 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 07:54:15,855 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:54:16,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:16,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:54:16 BoogieIcfgContainer [2020-12-23 07:54:16,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:54:16,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:54:16,117 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:54:16,117 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:54:16,118 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:09" (3/4) ... [2020-12-23 07:54:16,123 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 07:54:16,184 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/hard-u_unwindbound2.c-witness.graphml [2020-12-23 07:54:16,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:54:16,187 INFO L168 Benchmark]: Toolchain (without parser) took 7561.86 ms. Allocated memory was 163.6 MB in the beginning and 205.5 MB in the end (delta: 41.9 MB). Free memory was 139.2 MB in the beginning and 112.7 MB in the end (delta: 26.5 MB). Peak memory consumption was 69.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:16,188 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory is still 137.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:54:16,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.77 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 129.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:16,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.98 ms. Allocated memory is still 163.6 MB. Free memory was 128.9 MB in the beginning and 127.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:16,189 INFO L168 Benchmark]: Boogie Preprocessor took 62.86 ms. Allocated memory is still 163.6 MB. Free memory was 127.3 MB in the beginning and 126.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:16,190 INFO L168 Benchmark]: RCFGBuilder took 726.38 ms. Allocated memory is still 163.6 MB. Free memory was 126.1 MB in the beginning and 144.2 MB in the end (delta: -18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:16,191 INFO L168 Benchmark]: TraceAbstraction took 6275.46 ms. Allocated memory was 163.6 MB in the beginning and 205.5 MB in the end (delta: 41.9 MB). Free memory was 144.2 MB in the beginning and 115.9 MB in the end (delta: 28.4 MB). Peak memory consumption was 71.9 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:16,192 INFO L168 Benchmark]: Witness Printer took 67.84 ms. Allocated memory is still 205.5 MB. Free memory was 115.3 MB in the beginning and 112.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:16,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory is still 137.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.77 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 129.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 84.98 ms. Allocated memory is still 163.6 MB. Free memory was 128.9 MB in the beginning and 127.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.86 ms. Allocated memory is still 163.6 MB. Free memory was 127.3 MB in the beginning and 126.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 726.38 ms. Allocated memory is still 163.6 MB. Free memory was 126.1 MB in the beginning and 144.2 MB in the end (delta: -18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6275.46 ms. Allocated memory was 163.6 MB in the beginning and 205.5 MB in the end (delta: 41.9 MB). Free memory was 144.2 MB in the beginning and 115.9 MB in the end (delta: 28.4 MB). Peak memory consumption was 71.9 MB. Max. memory is 8.0 GB. * Witness Printer took 67.84 ms. Allocated memory is still 205.5 MB. Free memory was 115.3 MB in the beginning and 112.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) VAL [counter=0] [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND TRUE !(r >= d) VAL [counter=2] [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.1s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 308 SDtfs, 609 SDslu, 438 SDs, 0 SdLazy, 349 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 79 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 18774 SizeOfPredicates, 33 NumberOfNonLiveVariables, 560 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 8/25 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...