/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:52:14,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:52:14,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:52:14,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:52:14,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:52:14,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:52:14,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:52:14,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:52:14,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:52:14,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:52:14,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:52:14,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:52:14,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:52:14,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:52:14,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:52:14,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:52:14,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:52:14,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:52:14,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:52:14,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:52:14,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:52:14,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:52:14,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:52:15,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:52:15,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:52:15,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:52:15,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:52:15,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:52:15,029 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 07:52:15,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:52:15,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:52:15,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:52:15,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:52:15,083 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:52:15,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:52:15,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:52:15,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:52:15,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:52:15,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:52:15,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:52:15,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:52:15,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:52:15,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:52:15,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:52:15,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:52:15,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:52:15,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:52:15,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:52:15,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:52:15,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:52:15,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:52:15,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:52:15,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:52:15,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:52:15,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:52:15,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:52:15,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:52:15,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:52:15,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:52:15,523 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:52:15,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c [2020-12-23 07:52:15,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9e5167b3b/103c9512951e4fe18f9bc528cda389c3/FLAG35f2709c5 [2020-12-23 07:52:16,123 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:52:16,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c [2020-12-23 07:52:16,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9e5167b3b/103c9512951e4fe18f9bc528cda389c3/FLAG35f2709c5 [2020-12-23 07:52:16,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9e5167b3b/103c9512951e4fe18f9bc528cda389c3 [2020-12-23 07:52:16,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:52:16,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:52:16,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:52:16,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:52:16,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:52:16,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:52:16" (1/1) ... [2020-12-23 07:52:16,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388b2db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16, skipping insertion in model container [2020-12-23 07:52:16,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:52:16" (1/1) ... [2020-12-23 07:52:16,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:52:16,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:52:16,795 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c[538,551] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:52:16,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:52:16,856 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:52:16,877 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c[538,551] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:52:16,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:52:16,922 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:52:16,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16 WrapperNode [2020-12-23 07:52:16,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:52:16,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:52:16,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:52:16,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:52:16,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16" (1/1) ... [2020-12-23 07:52:16,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16" (1/1) ... [2020-12-23 07:52:16,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:52:16,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:52:16,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:52:16,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:52:16,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16" (1/1) ... [2020-12-23 07:52:16,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16" (1/1) ... [2020-12-23 07:52:16,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16" (1/1) ... [2020-12-23 07:52:16,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16" (1/1) ... [2020-12-23 07:52:16,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16" (1/1) ... [2020-12-23 07:52:16,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16" (1/1) ... [2020-12-23 07:52:16,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16" (1/1) ... [2020-12-23 07:52:16,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:52:16,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:52:16,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:52:16,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:52:16,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16" (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 07:52:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:52:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:52:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:52:17,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:52:17,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:52:17,531 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-23 07:52:17,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:52:17 BoogieIcfgContainer [2020-12-23 07:52:17,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:52:17,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:52:17,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:52:17,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:52:17,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:52:16" (1/3) ... [2020-12-23 07:52:17,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e26304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:52:17, skipping insertion in model container [2020-12-23 07:52:17,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:52:16" (2/3) ... [2020-12-23 07:52:17,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e26304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:52:17, skipping insertion in model container [2020-12-23 07:52:17,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:52:17" (3/3) ... [2020-12-23 07:52:17,555 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound10.c [2020-12-23 07:52:17,583 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:52:17,593 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:52:17,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:52:17,697 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:52:17,700 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:52:17,700 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:52:17,701 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:52:17,701 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:52:17,701 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:52:17,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:52:17,701 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:52:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-23 07:52:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:52:17,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:17,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:17,754 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:17,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:17,764 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 07:52:17,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:17,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578569281] [2020-12-23 07:52:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:18,001 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 07:52:18,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578569281] [2020-12-23 07:52:18,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:18,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:52:18,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896774577] [2020-12-23 07:52:18,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:52:18,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:18,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:52:18,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:52:18,033 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-23 07:52:18,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:18,067 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-23 07:52:18,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:52:18,068 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:52:18,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:18,080 INFO L225 Difference]: With dead ends: 83 [2020-12-23 07:52:18,081 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 07:52:18,085 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 07:52:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 07:52:18,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-23 07:52:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:52:18,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-23 07:52:18,123 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-23 07:52:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:18,123 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-23 07:52:18,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:52:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-23 07:52:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:52:18,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:18,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:18,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:52:18,125 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:18,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 07:52:18,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:18,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813965352] [2020-12-23 07:52:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:18,215 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 07:52:18,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813965352] [2020-12-23 07:52:18,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:18,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:52:18,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6258202] [2020-12-23 07:52:18,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:52:18,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:18,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:52:18,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:52:18,219 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-23 07:52:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:18,309 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-23 07:52:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:52:18,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 07:52:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:18,313 INFO L225 Difference]: With dead ends: 58 [2020-12-23 07:52:18,313 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:52:18,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:52:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:52:18,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-23 07:52:18,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:52:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 07:52:18,329 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-23 07:52:18,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:18,330 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 07:52:18,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:52:18,331 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 07:52:18,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:52:18,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:18,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:18,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:52:18,334 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:18,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-23 07:52:18,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:18,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25690667] [2020-12-23 07:52:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:18,484 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 07:52:18,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25690667] [2020-12-23 07:52:18,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:18,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:52:18,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105564524] [2020-12-23 07:52:18,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:52:18,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:18,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:52:18,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:52:18,496 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-23 07:52:18,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:18,628 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-23 07:52:18,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:52:18,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 07:52:18,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:18,630 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:52:18,630 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:52:18,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:52:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:52:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:52:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:52:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-23 07:52:18,647 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-23 07:52:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:18,648 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-23 07:52:18,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:52:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-23 07:52:18,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:52:18,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:18,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:18,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:52:18,652 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:18,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:18,654 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2020-12-23 07:52:18,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:18,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747376493] [2020-12-23 07:52:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:18,691 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:18,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766242002] [2020-12-23 07:52:18,692 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 07:52:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:18,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:52:18,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:18,908 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 07:52:18,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747376493] [2020-12-23 07:52:18,912 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:18,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766242002] [2020-12-23 07:52:18,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:18,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:52:18,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521472386] [2020-12-23 07:52:18,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:52:18,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:18,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:52:18,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:52:18,917 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2020-12-23 07:52:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:19,082 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-23 07:52:19,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:52:19,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:52:19,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:19,087 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:52:19,087 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:52:19,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:52:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:52:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-23 07:52:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:52:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-23 07:52:19,101 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-23 07:52:19,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:19,101 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-23 07:52:19,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:52:19,101 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-23 07:52:19,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:52:19,102 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:19,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:19,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:19,319 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:19,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:19,320 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2020-12-23 07:52:19,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:19,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426089989] [2020-12-23 07:52:19,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:19,354 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:19,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245104001] [2020-12-23 07:52:19,355 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 07:52:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:19,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:52:19,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:19,617 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 07:52:19,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426089989] [2020-12-23 07:52:19,618 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:19,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245104001] [2020-12-23 07:52:19,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:19,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 07:52:19,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915783374] [2020-12-23 07:52:19,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:52:19,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:19,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:52:19,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:52:19,620 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2020-12-23 07:52:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:19,895 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-12-23 07:52:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:52:19,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-23 07:52:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:19,896 INFO L225 Difference]: With dead ends: 67 [2020-12-23 07:52:19,896 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:52:19,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:52:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:52:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-23 07:52:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 07:52:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-23 07:52:19,907 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 18 [2020-12-23 07:52:19,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:19,908 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-23 07:52:19,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:52:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-23 07:52:19,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:52:19,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:19,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:20,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:20,124 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:20,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:20,126 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2020-12-23 07:52:20,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:20,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152226969] [2020-12-23 07:52:20,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:20,140 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:20,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600005171] [2020-12-23 07:52:20,141 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 07:52:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:20,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 07:52:20,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:20,347 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 07:52:20,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152226969] [2020-12-23 07:52:20,347 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:20,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600005171] [2020-12-23 07:52:20,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:20,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:52:20,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874638410] [2020-12-23 07:52:20,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:52:20,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:20,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:52:20,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:52:20,350 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 9 states. [2020-12-23 07:52:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:20,790 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2020-12-23 07:52:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:52:20,791 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-23 07:52:20,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:20,792 INFO L225 Difference]: With dead ends: 102 [2020-12-23 07:52:20,792 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 07:52:20,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:52:20,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 07:52:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-12-23 07:52:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:52:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-12-23 07:52:20,805 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 22 [2020-12-23 07:52:20,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:20,805 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-12-23 07:52:20,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:52:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-12-23 07:52:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:52:20,807 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:20,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:21,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:21,035 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:21,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:21,036 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2020-12-23 07:52:21,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:21,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752071654] [2020-12-23 07:52:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:21,059 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:21,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864442536] [2020-12-23 07:52:21,060 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 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 07:52:21,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:52:21,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:52:21,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:52:21,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:21,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752071654] [2020-12-23 07:52:21,512 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:21,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864442536] [2020-12-23 07:52:21,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:21,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:52:21,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713488665] [2020-12-23 07:52:21,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:52:21,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:21,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:52:21,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:52:21,515 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 12 states. [2020-12-23 07:52:23,873 WARN L197 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-23 07:52:24,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:24,654 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-12-23 07:52:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:52:24,655 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-12-23 07:52:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:24,658 INFO L225 Difference]: With dead ends: 127 [2020-12-23 07:52:24,658 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 07:52:24,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-12-23 07:52:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 07:52:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-12-23 07:52:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 07:52:24,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-12-23 07:52:24,678 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 29 [2020-12-23 07:52:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:24,679 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-12-23 07:52:24,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:52:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-12-23 07:52:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:52:24,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:24,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:24,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:24,896 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:24,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:24,897 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2020-12-23 07:52:24,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:24,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069389450] [2020-12-23 07:52:24,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:24,911 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:24,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965875710] [2020-12-23 07:52:24,912 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 07:52:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:25,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:52:25,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:25,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069389450] [2020-12-23 07:52:25,332 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:25,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965875710] [2020-12-23 07:52:25,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:25,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:52:25,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823745279] [2020-12-23 07:52:25,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:52:25,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:25,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:52:25,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:52:25,335 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 10 states. [2020-12-23 07:52:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:26,067 INFO L93 Difference]: Finished difference Result 125 states and 144 transitions. [2020-12-23 07:52:26,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:52:26,068 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 07:52:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:26,069 INFO L225 Difference]: With dead ends: 125 [2020-12-23 07:52:26,070 INFO L226 Difference]: Without dead ends: 123 [2020-12-23 07:52:26,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:52:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-23 07:52:26,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2020-12-23 07:52:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-23 07:52:26,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2020-12-23 07:52:26,089 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 31 [2020-12-23 07:52:26,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:26,089 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2020-12-23 07:52:26,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:52:26,089 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2020-12-23 07:52:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:52:26,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:26,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:26,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:26,304 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:26,306 INFO L82 PathProgramCache]: Analyzing trace with hash -684568005, now seen corresponding path program 1 times [2020-12-23 07:52:26,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:26,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736886318] [2020-12-23 07:52:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:26,318 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:26,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715451111] [2020-12-23 07:52:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:26,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:52:26,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:26,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736886318] [2020-12-23 07:52:26,697 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:26,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715451111] [2020-12-23 07:52:26,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:26,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:52:26,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965749132] [2020-12-23 07:52:26,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:52:26,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:26,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:52:26,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:52:26,702 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand 10 states. [2020-12-23 07:52:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:27,265 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2020-12-23 07:52:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:52:27,266 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-23 07:52:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:27,267 INFO L225 Difference]: With dead ends: 133 [2020-12-23 07:52:27,267 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 07:52:27,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:52:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 07:52:27,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2020-12-23 07:52:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-23 07:52:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-12-23 07:52:27,284 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 33 [2020-12-23 07:52:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:27,284 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-12-23 07:52:27,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:52:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-12-23 07:52:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:52:27,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:27,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:27,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:27,501 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:27,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:27,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1455744328, now seen corresponding path program 1 times [2020-12-23 07:52:27,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:27,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910588840] [2020-12-23 07:52:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:27,514 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:27,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497407126] [2020-12-23 07:52:27,515 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 07:52:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:27,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:52:27,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:27,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910588840] [2020-12-23 07:52:27,860 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:27,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497407126] [2020-12-23 07:52:27,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:27,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:52:27,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768129277] [2020-12-23 07:52:27,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:52:27,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:27,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:52:27,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:52:27,862 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 10 states. [2020-12-23 07:52:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:28,836 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2020-12-23 07:52:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:52:28,837 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-12-23 07:52:28,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:28,838 INFO L225 Difference]: With dead ends: 148 [2020-12-23 07:52:28,838 INFO L226 Difference]: Without dead ends: 133 [2020-12-23 07:52:28,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:52:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-23 07:52:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 104. [2020-12-23 07:52:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-23 07:52:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2020-12-23 07:52:28,853 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 36 [2020-12-23 07:52:28,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:28,854 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2020-12-23 07:52:28,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:52:28,854 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2020-12-23 07:52:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:52:28,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:28,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:29,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:52:29,069 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1277177884, now seen corresponding path program 3 times [2020-12-23 07:52:29,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:29,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996743331] [2020-12-23 07:52:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:29,091 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:29,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617761167] [2020-12-23 07:52:29,095 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 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 07:52:29,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:52:29,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:52:29,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:52:29,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-23 07:52:37,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996743331] [2020-12-23 07:52:37,792 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:37,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617761167] [2020-12-23 07:52:37,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:37,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:52:37,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113020234] [2020-12-23 07:52:37,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:52:37,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:37,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:52:37,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=47, Unknown=4, NotChecked=0, Total=72 [2020-12-23 07:52:37,795 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand 9 states. [2020-12-23 07:53:28,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:28,818 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2020-12-23 07:53:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:53:28,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-12-23 07:53:28,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:28,820 INFO L225 Difference]: With dead ends: 118 [2020-12-23 07:53:28,820 INFO L226 Difference]: Without dead ends: 114 [2020-12-23 07:53:28,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=40, Invalid=85, Unknown=7, NotChecked=0, Total=132 [2020-12-23 07:53:28,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-23 07:53:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2020-12-23 07:53:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-23 07:53:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2020-12-23 07:53:28,834 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 36 [2020-12-23 07:53:28,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:28,834 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2020-12-23 07:53:28,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:53:28,834 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2020-12-23 07:53:28,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:53:28,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:28,835 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:29,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 07:53:29,049 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:53:29,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:29,050 INFO L82 PathProgramCache]: Analyzing trace with hash -642892963, now seen corresponding path program 2 times [2020-12-23 07:53:29,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:29,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044499592] [2020-12-23 07:53:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:29,070 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:29,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367068011] [2020-12-23 07:53:29,071 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 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 07:53:29,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:53:29,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:29,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-23 07:53:29,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:29,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044499592] [2020-12-23 07:53:29,565 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:29,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367068011] [2020-12-23 07:53:29,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:29,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:53:29,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060909733] [2020-12-23 07:53:29,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:53:29,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:29,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:53:29,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:53:29,569 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand 11 states. [2020-12-23 07:53:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:30,531 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2020-12-23 07:53:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:53:30,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-12-23 07:53:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:30,533 INFO L225 Difference]: With dead ends: 161 [2020-12-23 07:53:30,533 INFO L226 Difference]: Without dead ends: 125 [2020-12-23 07:53:30,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:53:30,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-23 07:53:30,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 112. [2020-12-23 07:53:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-23 07:53:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2020-12-23 07:53:30,547 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 38 [2020-12-23 07:53:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:30,547 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2020-12-23 07:53:30,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:53:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2020-12-23 07:53:30,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:53:30,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:30,548 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:30,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:30,762 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:53:30,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:30,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1707275894, now seen corresponding path program 3 times [2020-12-23 07:53:30,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:30,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698173899] [2020-12-23 07:53:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:30,774 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:30,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315341253] [2020-12-23 07:53:30,774 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 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 07:53:30,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:53:30,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:30,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-23 07:53:30,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:31,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698173899] [2020-12-23 07:53:31,573 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:31,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315341253] [2020-12-23 07:53:31,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:31,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:53:31,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051756849] [2020-12-23 07:53:31,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:53:31,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:31,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:53:31,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:53:31,576 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand 15 states. [2020-12-23 07:53:33,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:33,061 INFO L93 Difference]: Finished difference Result 149 states and 173 transitions. [2020-12-23 07:53:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:53:33,062 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-12-23 07:53:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:33,063 INFO L225 Difference]: With dead ends: 149 [2020-12-23 07:53:33,063 INFO L226 Difference]: Without dead ends: 118 [2020-12-23 07:53:33,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2020-12-23 07:53:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-23 07:53:33,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2020-12-23 07:53:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-23 07:53:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2020-12-23 07:53:33,078 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 44 [2020-12-23 07:53:33,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:33,078 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2020-12-23 07:53:33,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:53:33,078 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2020-12-23 07:53:33,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:53:33,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:33,079 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:33,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:33,293 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:53:33,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:33,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2100302904, now seen corresponding path program 1 times [2020-12-23 07:53:33,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:33,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716083568] [2020-12-23 07:53:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:33,305 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:33,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62898926] [2020-12-23 07:53:33,306 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 [2020-12-23 07:53:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:53:33,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:53:33,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:33,441 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:53:33,444 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:53:33,450 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:53:33,466 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:53:33,470 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:53:33,475 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:53:33,479 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 07:53:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 07:53:33,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716083568] [2020-12-23 07:53:33,538 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:33,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62898926] [2020-12-23 07:53:33,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:53:33,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:53:33,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336686565] [2020-12-23 07:53:33,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:53:33,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:33,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:53:33,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:53:33,540 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 5 states. [2020-12-23 07:53:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:33,630 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2020-12-23 07:53:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:53:33,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-23 07:53:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:33,632 INFO L225 Difference]: With dead ends: 140 [2020-12-23 07:53:33,633 INFO L226 Difference]: Without dead ends: 98 [2020-12-23 07:53:33,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:53:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-23 07:53:33,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-12-23 07:53:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-23 07:53:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2020-12-23 07:53:33,646 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 44 [2020-12-23 07:53:33,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:33,646 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2020-12-23 07:53:33,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:53:33,646 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2020-12-23 07:53:33,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:53:33,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:33,647 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:33,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:53:33,862 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:53:33,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:33,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1027491960, now seen corresponding path program 4 times [2020-12-23 07:53:33,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:33,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235525377] [2020-12-23 07:53:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:33,871 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:33,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158919341] [2020-12-23 07:53:33,872 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:34,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:53:34,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:34,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:53:34,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:34,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235525377] [2020-12-23 07:53:34,550 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:34,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158919341] [2020-12-23 07:53:34,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:34,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:53:34,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160533603] [2020-12-23 07:53:34,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:53:34,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:34,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:53:34,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:53:34,553 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand 13 states. [2020-12-23 07:53:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:35,927 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2020-12-23 07:53:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:53:35,928 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-12-23 07:53:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:35,929 INFO L225 Difference]: With dead ends: 137 [2020-12-23 07:53:35,929 INFO L226 Difference]: Without dead ends: 129 [2020-12-23 07:53:35,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-12-23 07:53:35,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-12-23 07:53:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2020-12-23 07:53:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-23 07:53:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2020-12-23 07:53:35,945 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 45 [2020-12-23 07:53:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:35,945 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2020-12-23 07:53:35,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:53:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2020-12-23 07:53:35,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:53:35,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:35,946 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:36,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:53:36,162 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:53:36,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:36,163 INFO L82 PathProgramCache]: Analyzing trace with hash -14469331, now seen corresponding path program 2 times [2020-12-23 07:53:36,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:36,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834145989] [2020-12-23 07:53:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:36,176 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:36,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042068716] [2020-12-23 07:53:36,177 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:36,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:53:36,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:36,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-23 07:53:36,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:37,095 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 07:53:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:37,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834145989] [2020-12-23 07:53:37,319 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:37,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042068716] [2020-12-23 07:53:37,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:37,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 07:53:37,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570305235] [2020-12-23 07:53:37,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 07:53:37,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:37,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 07:53:37,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:53:37,321 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand 16 states. [2020-12-23 07:53:38,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:38,917 INFO L93 Difference]: Finished difference Result 134 states and 153 transitions. [2020-12-23 07:53:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:53:38,918 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-12-23 07:53:38,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:38,919 INFO L225 Difference]: With dead ends: 134 [2020-12-23 07:53:38,919 INFO L226 Difference]: Without dead ends: 91 [2020-12-23 07:53:38,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2020-12-23 07:53:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-23 07:53:38,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-12-23 07:53:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-23 07:53:38,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-12-23 07:53:38,930 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 46 [2020-12-23 07:53:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:38,931 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-12-23 07:53:38,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 07:53:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-12-23 07:53:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 07:53:38,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:38,931 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:39,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:53:39,135 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:53:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:39,136 INFO L82 PathProgramCache]: Analyzing trace with hash -422546789, now seen corresponding path program 3 times [2020-12-23 07:53:39,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:39,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441126623] [2020-12-23 07:53:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:39,154 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:39,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034124106] [2020-12-23 07:53:39,155 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:39,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:53:39,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:39,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-23 07:53:39,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:41,649 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-23 07:53:41,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441126623] [2020-12-23 07:53:41,795 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:41,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034124106] [2020-12-23 07:53:41,795 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:53:41,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:53:41,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:53:41,795 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:53:41,796 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:53:42,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:42,033 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:53:42,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:53:42 BoogieIcfgContainer [2020-12-23 07:53:42,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:53:42,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:53:42,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:53:42,035 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:53:42,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:52:17" (3/4) ... [2020-12-23 07:53:42,039 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:53:42,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:53:42,040 INFO L168 Benchmark]: Toolchain (without parser) took 85520.45 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 125.7 MB in the beginning and 112.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 83.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:42,041 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:53:42,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:42,042 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:42,043 INFO L168 Benchmark]: Boogie Preprocessor took 28.57 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:42,043 INFO L168 Benchmark]: RCFGBuilder took 536.84 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 95.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:42,044 INFO L168 Benchmark]: TraceAbstraction took 84495.67 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 95.3 MB in the beginning and 112.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:42,044 INFO L168 Benchmark]: Witness Printer took 4.53 ms. Allocated memory is still 219.2 MB. Free memory was 112.6 MB in the beginning and 112.1 MB in the end (delta: 539.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:53:42,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 399.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.57 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 536.84 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 95.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 84495.67 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 95.3 MB in the beginning and 112.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. * Witness Printer took 4.53 ms. Allocated memory is still 219.2 MB. Free memory was 112.6 MB in the beginning and 112.1 MB in the end (delta: 539.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: 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: [L23] unsigned int A, B; [L24] long long r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND TRUE !(r >= d) [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(p != 1)) [L52] d = d / 2 [L53] p = p / 2 [L54] COND TRUE r >= d [L55] r = r - d [L56] q = q + p [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 84.3s, OverallIterations: 17, TraceHistogramMax: 4, AutomataDifference: 63.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 439 SDtfs, 1526 SDslu, 1318 SDs, 0 SdLazy, 3087 SolverSat, 559 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 44.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 535 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 28.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 162 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 472 NumberOfCodeBlocks, 458 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 456 ConstructedInterpolants, 0 QuantifiedInterpolants, 243913 SizeOfPredicates, 140 NumberOfNonLiveVariables, 1627 ConjunctsInSsa, 449 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 55/260 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...