/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_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:29:41,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:29:41,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:29:41,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:29:41,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:29:41,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:29:41,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:29:41,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:29:41,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:29:41,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:29:41,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:29:41,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:29:41,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:29:42,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:29:42,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:29:42,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:29:42,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:29:42,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:29:42,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:29:42,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:29:42,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:29:42,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:29:42,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:29:42,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:29:42,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:29:42,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:29:42,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:29:42,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:29:42,076 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 07:29:42,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:29:42,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:29:42,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:29:42,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:29:42,130 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:29:42,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:29:42,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:29:42,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:29:42,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:29:42,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:29:42,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:29:42,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:29:42,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:29:42,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:29:42,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:29:42,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:29:42,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:29:42,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:29:42,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:29:42,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:29:42,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:29:42,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:29:42,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:29:42,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:29:42,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:29:42,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:29:42,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:29:42,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:29:42,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:29:42,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:29:42,610 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:29:42,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound100.c [2020-12-23 07:29:42,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/915656e8d/daea77801ed84e24a9ca7a9f4e569ffd/FLAGa6a8dc03b [2020-12-23 07:29:43,299 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:29:43,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound100.c [2020-12-23 07:29:43,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/915656e8d/daea77801ed84e24a9ca7a9f4e569ffd/FLAGa6a8dc03b [2020-12-23 07:29:43,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/915656e8d/daea77801ed84e24a9ca7a9f4e569ffd [2020-12-23 07:29:43,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:29:43,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:29:43,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:29:43,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:29:43,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:29:43,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:29:43" (1/1) ... [2020-12-23 07:29:43,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fffc602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:43, skipping insertion in model container [2020-12-23 07:29:43,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:29:43" (1/1) ... [2020-12-23 07:29:43,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:29:43,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:29:43,860 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_valuebound100.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 07:29:43,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:29:43,923 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:29:43,943 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_valuebound100.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 07:29:43,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:29:44,014 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:29:44,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44 WrapperNode [2020-12-23 07:29:44,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:29:44,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:29:44,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:29:44,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:29:44,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44" (1/1) ... [2020-12-23 07:29:44,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44" (1/1) ... [2020-12-23 07:29:44,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:29:44,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:29:44,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:29:44,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:29:44,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44" (1/1) ... [2020-12-23 07:29:44,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44" (1/1) ... [2020-12-23 07:29:44,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44" (1/1) ... [2020-12-23 07:29:44,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44" (1/1) ... [2020-12-23 07:29:44,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44" (1/1) ... [2020-12-23 07:29:44,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44" (1/1) ... [2020-12-23 07:29:44,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44" (1/1) ... [2020-12-23 07:29:44,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:29:44,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:29:44,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:29:44,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:29:44,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44" (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 07:29:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:29:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:29:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:29:44,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:29:46,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:29:46,732 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-23 07:29:46,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:29:46 BoogieIcfgContainer [2020-12-23 07:29:46,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:29:46,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:29:46,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:29:46,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:29:46,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:29:43" (1/3) ... [2020-12-23 07:29:46,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10217daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:29:46, skipping insertion in model container [2020-12-23 07:29:46,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:44" (2/3) ... [2020-12-23 07:29:46,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10217daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:29:46, skipping insertion in model container [2020-12-23 07:29:46,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:29:46" (3/3) ... [2020-12-23 07:29:46,744 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound100.c [2020-12-23 07:29:46,750 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:29:46,756 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-23 07:29:46,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-23 07:29:46,803 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:29:46,804 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:29:46,804 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:29:46,804 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:29:46,804 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:29:46,804 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:29:46,805 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:29:46,805 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:29:46,823 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-23 07:29:46,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:29:46,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:46,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:46,831 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 07:29:46,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:46,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2020-12-23 07:29:46,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:46,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514554535] [2020-12-23 07:29:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:47,002 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 07:29:47,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514554535] [2020-12-23 07:29:47,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:47,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:29:47,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019968794] [2020-12-23 07:29:47,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:29:47,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:47,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:29:47,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:29:47,028 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-23 07:29:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:47,053 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2020-12-23 07:29:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:29:47,054 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 07:29:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:47,064 INFO L225 Difference]: With dead ends: 97 [2020-12-23 07:29:47,064 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 07:29:47,068 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 07:29:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 07:29:47,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-23 07:29:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 07:29:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-23 07:29:47,107 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2020-12-23 07:29:47,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:47,108 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-23 07:29:47,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:29:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-23 07:29:47,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:29:47,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:47,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:47,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:29:47,111 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 07:29:47,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:47,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2020-12-23 07:29:47,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:47,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276692771] [2020-12-23 07:29:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:47,492 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 07:29:47,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276692771] [2020-12-23 07:29:47,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:47,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:29:47,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035958250] [2020-12-23 07:29:47,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:29:47,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:47,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:29:47,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:29:47,497 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 5 states. [2020-12-23 07:30:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:30:05,205 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2020-12-23 07:30:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:30:05,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 07:30:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:30:05,208 INFO L225 Difference]: With dead ends: 110 [2020-12-23 07:30:05,209 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 07:30:05,210 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 07:30:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 07:30:05,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2020-12-23 07:30:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:30:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-23 07:30:05,231 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2020-12-23 07:30:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:30:05,232 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-23 07:30:05,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:30:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-23 07:30:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:30:05,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:30:05,236 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:30:05,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:30:05,236 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 07:30:05,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:30:05,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2020-12-23 07:30:05,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:30:05,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425216516] [2020-12-23 07:30:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:30:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:05,500 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 07:30:05,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425216516] [2020-12-23 07:30:05,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546166957] [2020-12-23 07:30:05,501 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 07:30:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:05,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 07:30:05,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:30:05,814 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:30:05,831 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:30:05,870 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 07:30:05,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:30:05,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-23 07:30:05,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648888672] [2020-12-23 07:30:05,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:30:05,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:30:05,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:30:05,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:30:05,874 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 9 states. [2020-12-23 07:30:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:30:36,759 INFO L93 Difference]: Finished difference Result 186 states and 211 transitions. [2020-12-23 07:30:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-23 07:30:36,760 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-23 07:30:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:30:36,762 INFO L225 Difference]: With dead ends: 186 [2020-12-23 07:30:36,763 INFO L226 Difference]: Without dead ends: 140 [2020-12-23 07:30:36,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:30:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-23 07:30:36,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 105. [2020-12-23 07:30:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-23 07:30:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-12-23 07:30:36,784 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 13 [2020-12-23 07:30:36,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:30:36,784 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-12-23 07:30:36,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:30:36,785 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-12-23 07:30:36,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:30:36,786 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:30:36,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:30:36,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 07:30:37,000 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 07:30:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:30:37,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2020-12-23 07:30:37,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:30:37,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162753780] [2020-12-23 07:30:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:30:37,038 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:30:37,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224199389] [2020-12-23 07:30:37,038 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 07:30:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:37,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:30:37,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:30:37,244 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 07:30:37,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162753780] [2020-12-23 07:30:37,245 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:30:37,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224199389] [2020-12-23 07:30:37,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:30:37,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:30:37,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407255026] [2020-12-23 07:30:37,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:30:37,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:30:37,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:30:37,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:30:37,248 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 6 states. [2020-12-23 07:30:49,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:30:49,808 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-12-23 07:30:49,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:30:49,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:30:49,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:30:49,812 INFO L225 Difference]: With dead ends: 118 [2020-12-23 07:30:49,812 INFO L226 Difference]: Without dead ends: 99 [2020-12-23 07:30:49,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 07:30:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-23 07:30:49,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-12-23 07:30:49,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-23 07:30:49,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2020-12-23 07:30:49,830 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 15 [2020-12-23 07:30:49,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:30:49,830 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2020-12-23 07:30:49,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:30:49,830 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2020-12-23 07:30:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:30:49,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:30:49,831 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:30:50,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:30:50,040 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 07:30:50,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:30:50,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2020-12-23 07:30:50,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:30:50,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073668345] [2020-12-23 07:30:50,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:30:50,056 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:30:50,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340751838] [2020-12-23 07:30:50,057 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 07:30:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:50,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:30:50,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:30:50,310 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 07:30:50,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073668345] [2020-12-23 07:30:50,311 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:30:50,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340751838] [2020-12-23 07:30:50,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:30:50,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:30:50,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324124131] [2020-12-23 07:30:50,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:30:50,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:30:50,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:30:50,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:30:50,313 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand 6 states. [2020-12-23 07:31:00,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:00,258 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-12-23 07:31:00,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:31:00,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 07:31:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:00,263 INFO L225 Difference]: With dead ends: 108 [2020-12-23 07:31:00,263 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 07:31:00,264 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 07:31:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 07:31:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 97. [2020-12-23 07:31:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-23 07:31:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2020-12-23 07:31:00,280 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 17 [2020-12-23 07:31:00,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:00,280 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2020-12-23 07:31:00,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:31:00,280 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2020-12-23 07:31:00,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:31:00,281 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:00,281 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 07:31:00,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:00,489 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 07:31:00,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:00,490 INFO L82 PathProgramCache]: Analyzing trace with hash -957581047, now seen corresponding path program 1 times [2020-12-23 07:31:00,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:00,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064535292] [2020-12-23 07:31:00,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:00,518 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:00,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841374726] [2020-12-23 07:31:00,525 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 07:31:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:00,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:31:00,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:01,027 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:31:01,035 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:31:01,079 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 07:31:01,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064535292] [2020-12-23 07:31:01,079 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:01,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841374726] [2020-12-23 07:31:01,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:31:01,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:31:01,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429821307] [2020-12-23 07:31:01,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:31:01,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:01,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:31:01,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:31:01,082 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand 9 states. [2020-12-23 07:31:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:08,353 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2020-12-23 07:31:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:31:08,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-23 07:31:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:08,354 INFO L225 Difference]: With dead ends: 170 [2020-12-23 07:31:08,354 INFO L226 Difference]: Without dead ends: 117 [2020-12-23 07:31:08,355 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 07:31:08,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-23 07:31:08,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 95. [2020-12-23 07:31:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-23 07:31:08,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-12-23 07:31:08,371 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 27 [2020-12-23 07:31:08,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:08,371 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-12-23 07:31:08,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:31:08,371 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-12-23 07:31:08,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:31:08,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:08,372 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 07:31:08,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:08,576 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 07:31:08,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:08,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1112228340, now seen corresponding path program 1 times [2020-12-23 07:31:08,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:08,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354975224] [2020-12-23 07:31:08,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:08,612 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:08,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226964683] [2020-12-23 07:31:08,613 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 07:31:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:09,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 07:31:09,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:09,484 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 07:31:09,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354975224] [2020-12-23 07:31:09,485 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:09,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226964683] [2020-12-23 07:31:09,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:31:09,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:31:09,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275221451] [2020-12-23 07:31:09,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:31:09,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:09,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:31:09,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:31:09,487 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 10 states. [2020-12-23 07:31:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:28,488 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-12-23 07:31:28,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:31:28,490 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-12-23 07:31:28,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:28,491 INFO L225 Difference]: With dead ends: 117 [2020-12-23 07:31:28,491 INFO L226 Difference]: Without dead ends: 111 [2020-12-23 07:31:28,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:31:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-23 07:31:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-12-23 07:31:28,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-23 07:31:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2020-12-23 07:31:28,510 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 29 [2020-12-23 07:31:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:28,511 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2020-12-23 07:31:28,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:31:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2020-12-23 07:31:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:31:28,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:28,515 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 07:31:28,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:31:28,720 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 07:31:28,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:28,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1667347652, now seen corresponding path program 2 times [2020-12-23 07:31:28,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:28,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84065164] [2020-12-23 07:31:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:28,736 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:28,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908050657] [2020-12-23 07:31:28,736 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 07:31:28,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:31:28,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:31:28,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:31:28,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:29,157 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:31:29,165 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:31:29,218 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 07:31:29,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84065164] [2020-12-23 07:31:29,219 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:29,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908050657] [2020-12-23 07:31:29,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:31:29,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:31:29,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725085153] [2020-12-23 07:31:29,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:31:29,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:29,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:31:29,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:31:29,224 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 9 states. [2020-12-23 07:31:44,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:44,187 INFO L93 Difference]: Finished difference Result 168 states and 182 transitions. [2020-12-23 07:31:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:31:44,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-12-23 07:31:44,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:44,189 INFO L225 Difference]: With dead ends: 168 [2020-12-23 07:31:44,189 INFO L226 Difference]: Without dead ends: 126 [2020-12-23 07:31:44,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:31:44,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-23 07:31:44,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 117. [2020-12-23 07:31:44,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-23 07:31:44,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2020-12-23 07:31:44,202 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 29 [2020-12-23 07:31:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:44,202 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2020-12-23 07:31:44,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:31:44,202 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2020-12-23 07:31:44,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:31:44,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:44,204 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 07:31:44,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:44,407 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 07:31:44,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:44,408 INFO L82 PathProgramCache]: Analyzing trace with hash 595578799, now seen corresponding path program 1 times [2020-12-23 07:31:44,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:44,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57656972] [2020-12-23 07:31:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:44,421 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:44,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585559451] [2020-12-23 07:31:44,422 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 07:31:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:44,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:31:44,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:45,226 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 07:31:45,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57656972] [2020-12-23 07:31:45,227 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:45,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585559451] [2020-12-23 07:31:45,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:31:45,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:31:45,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068981772] [2020-12-23 07:31:45,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:31:45,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:45,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:31:45,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:31:45,229 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand 10 states. [2020-12-23 07:31:49,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:49,620 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2020-12-23 07:31:49,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:31:49,621 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 07:31:49,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:49,622 INFO L225 Difference]: With dead ends: 129 [2020-12-23 07:31:49,622 INFO L226 Difference]: Without dead ends: 110 [2020-12-23 07:31:49,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:31:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-23 07:31:49,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-12-23 07:31:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-23 07:31:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 114 transitions. [2020-12-23 07:31:49,644 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 114 transitions. Word has length 31 [2020-12-23 07:31:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:49,644 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 114 transitions. [2020-12-23 07:31:49,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:31:49,647 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 114 transitions. [2020-12-23 07:31:49,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:31:49,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:49,649 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 07:31:49,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:49,858 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 07:31:49,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:49,858 INFO L82 PathProgramCache]: Analyzing trace with hash 298448647, now seen corresponding path program 2 times [2020-12-23 07:31:49,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:49,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165974394] [2020-12-23 07:31:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:49,886 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:49,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127760409] [2020-12-23 07:31:49,886 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 07:31:57,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:31:57,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:31:57,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 07:31:57,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:02,575 WARN L197 SmtUtils]: Spent 4.55 s on a formula simplification. DAG size of input: 44 DAG size of output: 19 [2020-12-23 07:32:02,980 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 07:32:02,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165974394] [2020-12-23 07:32:02,980 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:02,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127760409] [2020-12-23 07:32:02,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:32:02,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-23 07:32:02,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382032333] [2020-12-23 07:32:02,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 07:32:02,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:32:02,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 07:32:02,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:32:02,983 INFO L87 Difference]: Start difference. First operand 108 states and 114 transitions. Second operand 14 states. [2020-12-23 07:32:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:32:18,428 INFO L93 Difference]: Finished difference Result 143 states and 150 transitions. [2020-12-23 07:32:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:32:18,429 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-12-23 07:32:18,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:32:18,430 INFO L225 Difference]: With dead ends: 143 [2020-12-23 07:32:18,431 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 07:32:18,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:32:18,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 07:32:18,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-12-23 07:32:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-23 07:32:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 128 transitions. [2020-12-23 07:32:18,442 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 128 transitions. Word has length 31 [2020-12-23 07:32:18,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:32:18,443 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 128 transitions. [2020-12-23 07:32:18,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 07:32:18,443 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 128 transitions. [2020-12-23 07:32:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:32:18,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:32:18,444 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 07:32:18,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:32:18,653 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 07:32:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:32:18,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1216942657, now seen corresponding path program 3 times [2020-12-23 07:32:18,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:32:18,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001494380] [2020-12-23 07:32:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:32:18,668 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:32:18,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522602226] [2020-12-23 07:32:18,672 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 07:32:18,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:32:18,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:32:18,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:32:18,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:32:19,073 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:32:19,429 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-12-23 07:32:19,637 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:32:19,706 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:32:19,723 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:32:19,748 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:32:19,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001494380] [2020-12-23 07:32:19,753 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:32:19,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522602226] [2020-12-23 07:32:19,753 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-23 07:32:19,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:32:19,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:32:19,754 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:32:19,754 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:32:19,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:32:19,985 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:32:19,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:32:19 BoogieIcfgContainer [2020-12-23 07:32:19,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:32:19,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:32:19,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:32:19,987 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:32:19,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:29:46" (3/4) ... [2020-12-23 07:32:19,992 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:32:19,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:32:19,995 INFO L168 Benchmark]: Toolchain (without parser) took 156338.98 ms. Allocated memory was 160.4 MB in the beginning and 210.8 MB in the end (delta: 50.3 MB). Free memory was 136.0 MB in the beginning and 105.1 MB in the end (delta: 31.0 MB). Peak memory consumption was 82.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:19,995 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 160.4 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:32:20,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.06 ms. Allocated memory is still 160.4 MB. Free memory was 135.8 MB in the beginning and 124.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:20,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.47 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:20,010 INFO L168 Benchmark]: Boogie Preprocessor took 29.88 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 121.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:20,010 INFO L168 Benchmark]: RCFGBuilder took 2640.06 ms. Allocated memory is still 160.4 MB. Free memory was 121.7 MB in the beginning and 138.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:20,012 INFO L168 Benchmark]: TraceAbstraction took 153250.47 ms. Allocated memory was 160.4 MB in the beginning and 210.8 MB in the end (delta: 50.3 MB). Free memory was 137.8 MB in the beginning and 105.6 MB in the end (delta: 32.2 MB). Peak memory consumption was 83.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:32:20,013 INFO L168 Benchmark]: Witness Printer took 5.88 ms. Allocated memory is still 210.8 MB. Free memory was 105.6 MB in the beginning and 105.1 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:32:20,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 160.4 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 355.06 ms. Allocated memory is still 160.4 MB. Free memory was 135.8 MB in the beginning and 124.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.47 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.88 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 121.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2640.06 ms. Allocated memory is still 160.4 MB. Free memory was 121.7 MB in the beginning and 138.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 153250.47 ms. Allocated memory was 160.4 MB in the beginning and 210.8 MB in the end (delta: 50.3 MB). Free memory was 137.8 MB in the beginning and 105.6 MB in the end (delta: 32.2 MB). Peak memory consumption was 83.0 MB. Max. memory is 8.0 GB. * Witness Printer took 5.88 ms. Allocated memory is still 210.8 MB. Free memory was 105.6 MB in the beginning and 105.1 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] unsigned int n, p, q, r, h; [L22] n = __VERIFIER_nondet_uint() [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 [L30] COND TRUE 1 [L31] COND FALSE !(!(q <= n)) [L34] q = 4 * q [L30] COND TRUE 1 [L31] COND FALSE !(!(q <= n)) [L34] q = 4 * q [L30] COND TRUE 1 [L31] COND FALSE !(!(q <= n)) [L34] q = 4 * q [L30] COND TRUE 1 [L31] COND TRUE !(q <= n) [L38] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L46] COND FALSE !(!(q != 1)) [L49] q = q / 4 [L50] h = p + q [L51] p = p / 2 [L52] COND TRUE r >= h [L53] p = p + q [L54] r = r - h [L38] COND TRUE 1 [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 153.1s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 132.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 349 SDtfs, 963 SDslu, 1208 SDs, 0 SdLazy, 1661 SolverSat, 392 SolverUnsat, 53 SolverUnknown, 0 SolverNotchecked, 120.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 100 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 9.1s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 215 ConstructedInterpolants, 0 QuantifiedInterpolants, 71871 SizeOfPredicates, 67 NumberOfNonLiveVariables, 766 ConjunctsInSsa, 220 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 2/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...