/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/dijkstra-u_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:31:02,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:31:02,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:31:02,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:31:02,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:31:02,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:31:02,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:31:02,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:31:02,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:31:02,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:31:02,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:31:02,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:31:02,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:31:02,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:31:02,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:31:02,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:31:02,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:31:02,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:31:02,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:31:02,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:31:02,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:31:02,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:31:02,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:31:02,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:31:02,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:31:02,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:31:02,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:31:02,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:31:02,109 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 07:31:02,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:31:02,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:31:02,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:31:02,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:31:02,162 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:31:02,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:31:02,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:31:02,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:31:02,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:31:02,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:31:02,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:31:02,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:31:02,165 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:31:02,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:31:02,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:31:02,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:31:02,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:31:02,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:31:02,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:31:02,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:31:02,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:31:02,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:31:02,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:31:02,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:31:02,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:31:02,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:31:02,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:31:02,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:31:02,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:31:02,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:31:02,593 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:31:02,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound50.c [2020-12-23 07:31:02,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8d1b347c9/2e767c1e612a43b9b2e1802f2fada0ac/FLAG5bfc9d979 [2020-12-23 07:31:03,246 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:31:03,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound50.c [2020-12-23 07:31:03,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8d1b347c9/2e767c1e612a43b9b2e1802f2fada0ac/FLAG5bfc9d979 [2020-12-23 07:31:03,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8d1b347c9/2e767c1e612a43b9b2e1802f2fada0ac [2020-12-23 07:31:03,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:31:03,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:31:03,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:31:03,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:31:03,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:31:03,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:31:03" (1/1) ... [2020-12-23 07:31:03,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e2b5324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03, skipping insertion in model container [2020-12-23 07:31:03,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:31:03" (1/1) ... [2020-12-23 07:31:03,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:31:03,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:31:03,801 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/dijkstra-u_valuebound50.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~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[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:31:03,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:31:03,866 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:31:03,887 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/dijkstra-u_valuebound50.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~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[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:31:03,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:31:03,966 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:31:03,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03 WrapperNode [2020-12-23 07:31:03,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:31:03,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:31:03,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:31:03,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:31:03,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03" (1/1) ... [2020-12-23 07:31:04,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03" (1/1) ... [2020-12-23 07:31:04,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:31:04,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:31:04,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:31:04,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:31:04,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03" (1/1) ... [2020-12-23 07:31:04,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03" (1/1) ... [2020-12-23 07:31:04,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03" (1/1) ... [2020-12-23 07:31:04,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03" (1/1) ... [2020-12-23 07:31:04,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03" (1/1) ... [2020-12-23 07:31:04,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03" (1/1) ... [2020-12-23 07:31:04,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03" (1/1) ... [2020-12-23 07:31:04,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:31:04,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:31:04,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:31:04,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:31:04,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03" (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 07:31:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:31:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:31:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:31:04,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:31:06,778 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:31:06,778 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-23 07:31:06,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:31:06 BoogieIcfgContainer [2020-12-23 07:31:06,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:31:06,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:31:06,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:31:06,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:31:06,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:31:03" (1/3) ... [2020-12-23 07:31:06,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b350a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:31:06, skipping insertion in model container [2020-12-23 07:31:06,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:03" (2/3) ... [2020-12-23 07:31:06,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b350a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:31:06, skipping insertion in model container [2020-12-23 07:31:06,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:31:06" (3/3) ... [2020-12-23 07:31:06,788 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound50.c [2020-12-23 07:31:06,795 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:31:06,800 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-23 07:31:06,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-23 07:31:06,844 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:31:06,844 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:31:06,844 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:31:06,844 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:31:06,845 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:31:06,845 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:31:06,845 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:31:06,845 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:31:06,862 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-23 07:31:06,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:31:06,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:06,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:06,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:06,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:06,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2020-12-23 07:31:06,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:06,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924394905] [2020-12-23 07:31:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:07,033 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 07:31:07,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924394905] [2020-12-23 07:31:07,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:31:07,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:31:07,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037706685] [2020-12-23 07:31:07,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:31:07,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:07,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:31:07,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:31:07,057 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-23 07:31:07,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:07,078 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2020-12-23 07:31:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:31:07,080 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 07:31:07,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:07,089 INFO L225 Difference]: With dead ends: 97 [2020-12-23 07:31:07,089 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 07:31:07,093 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 07:31:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 07:31:07,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-23 07:31:07,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 07:31:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-23 07:31:07,134 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2020-12-23 07:31:07,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:07,134 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-23 07:31:07,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:31:07,135 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-23 07:31:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:31:07,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:07,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:07,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:31:07,136 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:07,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:07,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2020-12-23 07:31:07,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:07,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207520349] [2020-12-23 07:31:07,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:07,516 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 07:31:07,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207520349] [2020-12-23 07:31:07,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:31:07,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:31:07,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712909345] [2020-12-23 07:31:07,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:31:07,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:07,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:31:07,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:31:07,520 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 5 states. [2020-12-23 07:31:17,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:17,760 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2020-12-23 07:31:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:31:17,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 07:31:17,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:17,763 INFO L225 Difference]: With dead ends: 110 [2020-12-23 07:31:17,764 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 07:31:17,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:31:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 07:31:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2020-12-23 07:31:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:31:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-23 07:31:17,780 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2020-12-23 07:31:17,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:17,780 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-23 07:31:17,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:31:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-23 07:31:17,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:31:17,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:17,781 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:17,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:31:17,782 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:17,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:17,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2020-12-23 07:31:17,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:17,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983346970] [2020-12-23 07:31:17,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:18,050 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 07:31:18,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983346970] [2020-12-23 07:31:18,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421610188] [2020-12-23 07:31:18,052 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 07:31:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:18,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 07:31:18,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:18,367 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:31:18,375 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:31:18,418 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 07:31:18,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:31:18,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-23 07:31:18,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629462604] [2020-12-23 07:31:18,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:31:18,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:18,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:31:18,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:31:18,422 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 9 states. [2020-12-23 07:31:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:45,886 INFO L93 Difference]: Finished difference Result 164 states and 187 transitions. [2020-12-23 07:31:45,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-23 07:31:45,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-23 07:31:45,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:45,899 INFO L225 Difference]: With dead ends: 164 [2020-12-23 07:31:45,899 INFO L226 Difference]: Without dead ends: 126 [2020-12-23 07:31:45,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:31:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-23 07:31:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2020-12-23 07:31:45,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-23 07:31:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2020-12-23 07:31:45,922 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 13 [2020-12-23 07:31:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:45,922 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2020-12-23 07:31:45,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:31:45,922 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2020-12-23 07:31:45,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:31:45,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:45,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:46,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 07:31:46,139 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:46,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:46,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2020-12-23 07:31:46,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:46,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089648637] [2020-12-23 07:31:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:46,168 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:46,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660732388] [2020-12-23 07:31:46,168 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 07:31:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:46,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:31:46,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:46,424 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 07:31:46,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089648637] [2020-12-23 07:31:46,425 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:46,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660732388] [2020-12-23 07:31:46,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:31:46,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:31:46,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861010845] [2020-12-23 07:31:46,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:31:46,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:46,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:31:46,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:31:46,429 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand 6 states. [2020-12-23 07:31:57,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:57,245 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-12-23 07:31:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:31:57,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:31:57,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:57,247 INFO L225 Difference]: With dead ends: 108 [2020-12-23 07:31:57,247 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 07:31:57,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:31:57,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 07:31:57,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-12-23 07:31:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-23 07:31:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2020-12-23 07:31:57,264 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 15 [2020-12-23 07:31:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:57,264 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2020-12-23 07:31:57,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:31:57,264 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2020-12-23 07:31:57,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:31:57,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:57,265 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:57,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:57,479 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:57,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2020-12-23 07:31:57,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:57,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064947673] [2020-12-23 07:31:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:57,511 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:57,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748445320] [2020-12-23 07:31:57,512 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 07:31:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:57,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:31:57,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 07:31:57,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064947673] [2020-12-23 07:31:57,808 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:57,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748445320] [2020-12-23 07:31:57,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:31:57,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:31:57,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759247907] [2020-12-23 07:31:57,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:31:57,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:57,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:31:57,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:31:57,816 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand 6 states. [2020-12-23 07:32:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:03,114 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2020-12-23 07:32:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:32:03,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 07:32:03,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:03,117 INFO L225 Difference]: With dead ends: 119 [2020-12-23 07:32:03,117 INFO L226 Difference]: Without dead ends: 96 [2020-12-23 07:32:03,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:32:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-23 07:32:03,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-12-23 07:32:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:32:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2020-12-23 07:32:03,134 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 17 [2020-12-23 07:32:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:03,135 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2020-12-23 07:32:03,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:32:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2020-12-23 07:32:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:32:03,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:03,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:03,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:03,342 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:03,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:03,344 INFO L82 PathProgramCache]: Analyzing trace with hash -957581047, now seen corresponding path program 1 times [2020-12-23 07:32:03,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:03,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402885270] [2020-12-23 07:32:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:03,358 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:03,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201547095] [2020-12-23 07:32:03,358 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 07:32:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:03,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:32:03,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:03,831 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:32:03,837 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:32:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:03,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402885270] [2020-12-23 07:32:03,871 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:03,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201547095] [2020-12-23 07:32:03,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:32:03,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:32:03,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917851954] [2020-12-23 07:32:03,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:32:03,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:03,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:32:03,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:32:03,874 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand 9 states. [2020-12-23 07:32:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:19,871 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2020-12-23 07:32:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:32:19,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-23 07:32:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:19,957 INFO L225 Difference]: With dead ends: 167 [2020-12-23 07:32:19,957 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 07:32:19,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:32:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 07:32:19,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2020-12-23 07:32:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:32:19,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2020-12-23 07:32:19,972 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 27 [2020-12-23 07:32:19,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:19,973 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2020-12-23 07:32:19,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:32:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2020-12-23 07:32:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:32:19,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:19,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:20,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:20,181 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:20,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:20,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1112228340, now seen corresponding path program 1 times [2020-12-23 07:32:20,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:20,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414569342] [2020-12-23 07:32:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:20,200 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:20,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615963746] [2020-12-23 07:32:20,201 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 07:32:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:20,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 07:32:20,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:32:20,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414569342] [2020-12-23 07:32:20,897 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:20,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615963746] [2020-12-23 07:32:20,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:32:20,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:32:20,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533261774] [2020-12-23 07:32:20,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:32:20,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:20,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:32:20,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:32:20,900 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand 10 states. [2020-12-23 07:32:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:27,069 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2020-12-23 07:32:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:32:27,072 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-12-23 07:32:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:27,073 INFO L225 Difference]: With dead ends: 116 [2020-12-23 07:32:27,073 INFO L226 Difference]: Without dead ends: 110 [2020-12-23 07:32:27,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:32:27,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-23 07:32:27,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2020-12-23 07:32:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 07:32:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-12-23 07:32:27,085 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 29 [2020-12-23 07:32:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:27,088 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-12-23 07:32:27,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:32:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-12-23 07:32:27,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:32:27,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:27,089 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:27,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:32:27,304 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:27,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:27,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1667347652, now seen corresponding path program 2 times [2020-12-23 07:32:27,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:27,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548249315] [2020-12-23 07:32:27,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:27,319 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:27,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211894294] [2020-12-23 07:32:27,320 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 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 07:32:27,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:32:27,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:32:27,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:32:27,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:27,675 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:32:27,680 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:32:27,714 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 07:32:27,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548249315] [2020-12-23 07:32:27,715 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:27,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211894294] [2020-12-23 07:32:27,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:32:27,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:32:27,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947327043] [2020-12-23 07:32:27,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:32:27,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:27,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:32:27,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:32:27,717 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 9 states. [2020-12-23 07:32:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:41,455 INFO L93 Difference]: Finished difference Result 179 states and 193 transitions. [2020-12-23 07:32:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:32:41,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-12-23 07:32:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:41,457 INFO L225 Difference]: With dead ends: 179 [2020-12-23 07:32:41,457 INFO L226 Difference]: Without dead ends: 137 [2020-12-23 07:32:41,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:32:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-23 07:32:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 127. [2020-12-23 07:32:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-23 07:32:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 141 transitions. [2020-12-23 07:32:41,474 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 141 transitions. Word has length 29 [2020-12-23 07:32:41,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:41,474 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 141 transitions. [2020-12-23 07:32:41,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:32:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 141 transitions. [2020-12-23 07:32:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:32:41,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:41,476 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:41,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:41,682 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:41,683 INFO L82 PathProgramCache]: Analyzing trace with hash 595578799, now seen corresponding path program 1 times [2020-12-23 07:32:41,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:41,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999845172] [2020-12-23 07:32:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:41,694 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:41,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526852330] [2020-12-23 07:32:41,695 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 07:32:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:32:42,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:32:42,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:42,480 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 07:32:42,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999845172] [2020-12-23 07:32:42,481 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:42,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526852330] [2020-12-23 07:32:42,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:32:42,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:32:42,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856672972] [2020-12-23 07:32:42,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:32:42,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:42,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:32:42,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:32:42,483 INFO L87 Difference]: Start difference. First operand 127 states and 141 transitions. Second operand 10 states. [2020-12-23 07:32:57,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:57,372 INFO L93 Difference]: Finished difference Result 139 states and 148 transitions. [2020-12-23 07:32:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:32:57,373 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 07:32:57,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:57,373 INFO L225 Difference]: With dead ends: 139 [2020-12-23 07:32:57,374 INFO L226 Difference]: Without dead ends: 120 [2020-12-23 07:32:57,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:32:57,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-23 07:32:57,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-12-23 07:32:57,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-23 07:32:57,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2020-12-23 07:32:57,384 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 31 [2020-12-23 07:32:57,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:57,385 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2020-12-23 07:32:57,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:32:57,385 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2020-12-23 07:32:57,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:32:57,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:57,386 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:32:57,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:57,596 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:32:57,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:57,597 INFO L82 PathProgramCache]: Analyzing trace with hash 298448647, now seen corresponding path program 2 times [2020-12-23 07:32:57,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:57,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231967512] [2020-12-23 07:32:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:57,609 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:57,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054709562] [2020-12-23 07:32:57,610 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:33:02,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:33:02,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:33:02,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:33:02,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:33:05,766 WARN L197 SmtUtils]: Spent 2.91 s on a formula simplification. DAG size of input: 44 DAG size of output: 19 [2020-12-23 07:33:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:33:06,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231967512] [2020-12-23 07:33:06,102 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:33:06,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054709562] [2020-12-23 07:33:06,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:33:06,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-23 07:33:06,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120188160] [2020-12-23 07:33:06,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 07:33:06,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:33:06,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 07:33:06,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:33:06,104 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand 14 states. [2020-12-23 07:33:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:33:21,682 INFO L93 Difference]: Finished difference Result 130 states and 136 transitions. [2020-12-23 07:33:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:33:21,683 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-12-23 07:33:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:33:21,685 INFO L225 Difference]: With dead ends: 130 [2020-12-23 07:33:21,685 INFO L226 Difference]: Without dead ends: 126 [2020-12-23 07:33:21,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:33:21,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-23 07:33:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 118. [2020-12-23 07:33:21,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-23 07:33:21,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2020-12-23 07:33:21,696 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 31 [2020-12-23 07:33:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:33:21,696 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2020-12-23 07:33:21,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 07:33:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2020-12-23 07:33:21,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:33:21,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:33:21,698 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:33:21,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:33:21,905 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:33:21,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:33:21,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1216942657, now seen corresponding path program 3 times [2020-12-23 07:33:21,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:33:21,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748717503] [2020-12-23 07:33:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:33:21,923 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:33:21,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248958726] [2020-12-23 07:33:21,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:33:22,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:33:22,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:33:22,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 07:33:22,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:33:22,667 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:33:22,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:33:22,916 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:33:23,064 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:23,136 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:23,220 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:23,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:23,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 19 disjuncts [2020-12-23 07:33:23,729 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:23,802 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:23,857 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:23,913 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:24,015 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:24,085 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:24,144 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:24,202 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:24,305 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 19 disjuncts [2020-12-23 07:33:24,643 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 21 disjuncts [2020-12-23 07:33:25,108 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:33:25,160 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:25,221 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:25,271 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:25,322 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:25,420 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:25,476 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:25,525 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:25,574 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:25,653 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 19 disjuncts [2020-12-23 07:33:25,933 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:25,986 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:26,036 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:26,084 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:26,175 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:26,221 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:26,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:26,323 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:33:26,395 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 19 disjuncts [2020-12-23 07:33:26,672 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 21 disjuncts [2020-12-23 07:33:27,050 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 22 disjuncts [2020-12-23 07:33:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 07:33:28,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748717503] [2020-12-23 07:33:28,098 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:33:28,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248958726] [2020-12-23 07:33:28,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:33:28,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:33:28,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903131783] [2020-12-23 07:33:28,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:33:28,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:33:28,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:33:28,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:33:28,101 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand 10 states. [2020-12-23 07:33:29,648 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-23 07:33:30,457 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-12-23 07:33:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:33:59,819 INFO L93 Difference]: Finished difference Result 220 states and 236 transitions. [2020-12-23 07:33:59,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:33:59,820 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 07:33:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:33:59,822 INFO L225 Difference]: With dead ends: 220 [2020-12-23 07:33:59,822 INFO L226 Difference]: Without dead ends: 192 [2020-12-23 07:33:59,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:33:59,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-12-23 07:33:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 139. [2020-12-23 07:33:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-12-23 07:33:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2020-12-23 07:33:59,834 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 31 [2020-12-23 07:33:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:33:59,835 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2020-12-23 07:33:59,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:33:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2020-12-23 07:33:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:33:59,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:33:59,836 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:34:00,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:00,043 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:34:00,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:34:00,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1216883075, now seen corresponding path program 1 times [2020-12-23 07:34:00,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:34:00,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238146246] [2020-12-23 07:34:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:34:00,055 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:34:00,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952800789] [2020-12-23 07:34:00,055 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:34:00,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:34:00,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:34:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:34:00,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238146246] [2020-12-23 07:34:00,331 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:34:00,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952800789] [2020-12-23 07:34:00,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:34:00,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:34:00,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773878371] [2020-12-23 07:34:00,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:34:00,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:34:00,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:34:00,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:34:00,335 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand 8 states. [2020-12-23 07:34:07,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:34:07,355 INFO L93 Difference]: Finished difference Result 215 states and 236 transitions. [2020-12-23 07:34:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:34:07,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:34:07,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:34:07,360 INFO L225 Difference]: With dead ends: 215 [2020-12-23 07:34:07,360 INFO L226 Difference]: Without dead ends: 155 [2020-12-23 07:34:07,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:34:07,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-23 07:34:07,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-12-23 07:34:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-23 07:34:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2020-12-23 07:34:07,373 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 31 [2020-12-23 07:34:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:34:07,373 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2020-12-23 07:34:07,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:34:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2020-12-23 07:34:07,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:34:07,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:34:07,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:34:07,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:07,589 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:34:07,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:34:07,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1120732658, now seen corresponding path program 1 times [2020-12-23 07:34:07,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:34:07,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223256711] [2020-12-23 07:34:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:34:07,606 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:34:07,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786383554] [2020-12-23 07:34:07,608 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true