/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/cohencu-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:17:03,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:17:03,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:17:03,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:17:03,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:17:03,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:17:03,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:17:03,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:17:03,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:17:03,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:17:03,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:17:03,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:17:03,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:17:03,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:17:03,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:17:03,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:17:03,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:17:03,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:17:03,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:17:03,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:17:03,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:17:03,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:17:03,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:17:03,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:17:03,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:17:03,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:17:03,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:17:03,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:17:03,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:17:03,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:17:03,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:17:03,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:17:03,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:17:03,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:17:03,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:17:03,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:17:03,124 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 07:17:03,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:17:03,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:17:03,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:17:03,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:17:03,180 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:17:03,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:17:03,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:17:03,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:17:03,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:17:03,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:17:03,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:17:03,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:17:03,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:17:03,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:17:03,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:17:03,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:17:03,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:17:03,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:17:03,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:17:03,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:17:03,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:17:03,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:17:03,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:17:03,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:17:03,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:17:03,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:17:03,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:17:03,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:17:03,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:17:03,645 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:17:03,646 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:17:03,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/cohencu-ll.c [2020-12-23 07:17:03,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dcdef865d/c32ee3c9c8004cfb98cf5cec2c7fd00d/FLAG51fe9853a [2020-12-23 07:17:04,352 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:17:04,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench/cohencu-ll.c [2020-12-23 07:17:04,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dcdef865d/c32ee3c9c8004cfb98cf5cec2c7fd00d/FLAG51fe9853a [2020-12-23 07:17:04,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dcdef865d/c32ee3c9c8004cfb98cf5cec2c7fd00d [2020-12-23 07:17:04,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:17:04,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:17:04,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:17:04,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:17:04,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:17:04,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:17:04" (1/1) ... [2020-12-23 07:17:04,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77cc42de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:04, skipping insertion in model container [2020-12-23 07:17:04,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:17:04" (1/1) ... [2020-12-23 07:17:04,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:17:04,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:17:04,998 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/cohencu-ll.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2020-12-23 07:17:05,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:17:05,041 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:17:05,065 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/cohencu-ll.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2020-12-23 07:17:05,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:17:05,095 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:17:05,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05 WrapperNode [2020-12-23 07:17:05,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:17:05,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:17:05,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:17:05,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:17:05,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05" (1/1) ... [2020-12-23 07:17:05,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05" (1/1) ... [2020-12-23 07:17:05,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:17:05,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:17:05,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:17:05,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:17:05,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05" (1/1) ... [2020-12-23 07:17:05,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05" (1/1) ... [2020-12-23 07:17:05,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05" (1/1) ... [2020-12-23 07:17:05,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05" (1/1) ... [2020-12-23 07:17:05,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05" (1/1) ... [2020-12-23 07:17:05,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05" (1/1) ... [2020-12-23 07:17:05,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05" (1/1) ... [2020-12-23 07:17:05,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:17:05,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:17:05,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:17:05,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:17:05,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05" (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 07:17:05,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:17:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:17:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:17:05,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:17:05,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:17:05,766 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-23 07:17:05,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:17:05 BoogieIcfgContainer [2020-12-23 07:17:05,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:17:05,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:17:05,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:17:05,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:17:05,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:17:04" (1/3) ... [2020-12-23 07:17:05,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2967241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:17:05, skipping insertion in model container [2020-12-23 07:17:05,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:05" (2/3) ... [2020-12-23 07:17:05,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2967241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:17:05, skipping insertion in model container [2020-12-23 07:17:05,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:17:05" (3/3) ... [2020-12-23 07:17:05,778 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2020-12-23 07:17:05,785 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:17:05,790 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 07:17:05,813 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 07:17:05,843 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:17:05,843 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:17:05,844 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:17:05,844 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:17:05,844 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:17:05,844 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:17:05,844 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:17:05,845 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:17:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-12-23 07:17:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 07:17:05,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:05,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 07:17:05,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:05,877 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-12-23 07:17:05,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:05,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728979752] [2020-12-23 07:17:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:06,218 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 07:17:06,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728979752] [2020-12-23 07:17:06,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:17:06,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:17:06,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229578848] [2020-12-23 07:17:06,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:17:06,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:06,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:17:06,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:17:06,255 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-12-23 07:17:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:06,491 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2020-12-23 07:17:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:17:06,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-23 07:17:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:06,503 INFO L225 Difference]: With dead ends: 97 [2020-12-23 07:17:06,503 INFO L226 Difference]: Without dead ends: 44 [2020-12-23 07:17:06,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:17:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-23 07:17:06,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-12-23 07:17:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 07:17:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-12-23 07:17:06,547 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 5 [2020-12-23 07:17:06,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:06,547 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-12-23 07:17:06,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:17:06,547 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-12-23 07:17:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:17:06,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:06,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:06,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:17:06,549 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:06,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:06,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2020-12-23 07:17:06,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:06,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001057948] [2020-12-23 07:17:06,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:06,580 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:06,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187042914] [2020-12-23 07:17:06,581 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 07:17:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:06,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:17:06,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:06,747 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 07:17:06,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001057948] [2020-12-23 07:17:06,748 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:06,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187042914] [2020-12-23 07:17:06,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:17:06,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:17:06,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135514750] [2020-12-23 07:17:06,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:17:06,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:06,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:17:06,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:17:06,752 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-12-23 07:17:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:06,898 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2020-12-23 07:17:06,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:17:06,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-23 07:17:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:06,900 INFO L225 Difference]: With dead ends: 85 [2020-12-23 07:17:06,900 INFO L226 Difference]: Without dead ends: 77 [2020-12-23 07:17:06,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:17:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-23 07:17:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2020-12-23 07:17:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 07:17:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2020-12-23 07:17:06,931 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 7 [2020-12-23 07:17:06,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:06,931 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2020-12-23 07:17:06,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:17:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2020-12-23 07:17:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:17:06,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:06,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:07,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:17:07,150 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:07,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:07,152 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2020-12-23 07:17:07,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:07,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332719490] [2020-12-23 07:17:07,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:07,168 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:07,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394126104] [2020-12-23 07:17:07,169 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 07:17:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:07,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:17:07,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:07,282 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 07:17:07,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332719490] [2020-12-23 07:17:07,282 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:07,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394126104] [2020-12-23 07:17:07,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:17:07,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:17:07,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703427159] [2020-12-23 07:17:07,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:17:07,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:07,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:17:07,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:17:07,285 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 6 states. [2020-12-23 07:17:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:07,439 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2020-12-23 07:17:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:17:07,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-23 07:17:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:07,441 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:17:07,441 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 07:17:07,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 07:17:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 07:17:07,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-12-23 07:17:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 07:17:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-12-23 07:17:07,455 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 9 [2020-12-23 07:17:07,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:07,455 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-12-23 07:17:07,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:17:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-12-23 07:17:07,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:17:07,456 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:07,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:07,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:07,672 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:07,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:07,673 INFO L82 PathProgramCache]: Analyzing trace with hash -976588461, now seen corresponding path program 1 times [2020-12-23 07:17:07,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:07,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121158398] [2020-12-23 07:17:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:07,688 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:07,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972864939] [2020-12-23 07:17:07,689 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 07:17:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:07,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:17:07,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:07,797 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 07:17:07,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121158398] [2020-12-23 07:17:07,798 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:07,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972864939] [2020-12-23 07:17:07,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:17:07,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:17:07,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709799524] [2020-12-23 07:17:07,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:17:07,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:07,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:17:07,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:17:07,801 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 6 states. [2020-12-23 07:17:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:07,968 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-12-23 07:17:07,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:17:07,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 07:17:07,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:07,970 INFO L225 Difference]: With dead ends: 73 [2020-12-23 07:17:07,971 INFO L226 Difference]: Without dead ends: 55 [2020-12-23 07:17:07,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 07:17:07,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-23 07:17:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-12-23 07:17:07,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:17:07,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-12-23 07:17:07,981 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 11 [2020-12-23 07:17:07,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:07,982 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-12-23 07:17:07,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:17:07,982 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-12-23 07:17:07,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:17:07,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:07,983 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:08,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:08,197 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:08,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:08,199 INFO L82 PathProgramCache]: Analyzing trace with hash -417136811, now seen corresponding path program 1 times [2020-12-23 07:17:08,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:08,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545848324] [2020-12-23 07:17:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:08,220 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:08,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44569958] [2020-12-23 07:17:08,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:08,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:17:08,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:17:08,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545848324] [2020-12-23 07:17:08,366 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:08,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44569958] [2020-12-23 07:17:08,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:08,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:17:08,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102281116] [2020-12-23 07:17:08,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:17:08,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:08,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:17:08,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:17:08,369 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 7 states. [2020-12-23 07:17:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:08,572 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2020-12-23 07:17:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:17:08,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 07:17:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:08,575 INFO L225 Difference]: With dead ends: 96 [2020-12-23 07:17:08,575 INFO L226 Difference]: Without dead ends: 90 [2020-12-23 07:17:08,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:17:08,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-23 07:17:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-12-23 07:17:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:17:08,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2020-12-23 07:17:08,590 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 18 [2020-12-23 07:17:08,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:08,590 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2020-12-23 07:17:08,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:17:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2020-12-23 07:17:08,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:17:08,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:08,591 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:08,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:08,806 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:08,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:08,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1436360968, now seen corresponding path program 1 times [2020-12-23 07:17:08,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:08,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571171484] [2020-12-23 07:17:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:08,823 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:08,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527036107] [2020-12-23 07:17:08,826 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 07:17:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:08,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:17:08,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:09,022 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 07:17:09,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571171484] [2020-12-23 07:17:09,023 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:09,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527036107] [2020-12-23 07:17:09,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:09,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:17:09,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350167995] [2020-12-23 07:17:09,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:17:09,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:09,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:17:09,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:17:09,026 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 7 states. [2020-12-23 07:17:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:09,197 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2020-12-23 07:17:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:17:09,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-23 07:17:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:09,198 INFO L225 Difference]: With dead ends: 89 [2020-12-23 07:17:09,198 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:17:09,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:17:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:17:09,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-12-23 07:17:09,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 07:17:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-12-23 07:17:09,209 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 20 [2020-12-23 07:17:09,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:09,209 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-12-23 07:17:09,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:17:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-12-23 07:17:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:17:09,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:09,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:09,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:17:09,429 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:09,430 INFO L82 PathProgramCache]: Analyzing trace with hash -914405458, now seen corresponding path program 1 times [2020-12-23 07:17:09,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:09,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366954785] [2020-12-23 07:17:09,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:09,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:09,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145324021] [2020-12-23 07:17:09,443 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 07:17:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:09,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:17:09,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:09,794 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:17:09,820 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 07:17:09,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366954785] [2020-12-23 07:17:09,821 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:09,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145324021] [2020-12-23 07:17:09,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:09,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:17:09,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088967067] [2020-12-23 07:17:09,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:17:09,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:09,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:17:09,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:17:09,823 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 8 states. [2020-12-23 07:17:10,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:10,121 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-12-23 07:17:10,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:17:10,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-23 07:17:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:10,122 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:17:10,122 INFO L226 Difference]: Without dead ends: 77 [2020-12-23 07:17:10,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:17:10,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-23 07:17:10,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-12-23 07:17:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 07:17:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-12-23 07:17:10,134 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 29 [2020-12-23 07:17:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:10,135 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-12-23 07:17:10,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:17:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-12-23 07:17:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:17:10,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:10,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 07:17:10,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:10,350 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:10,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:10,351 INFO L82 PathProgramCache]: Analyzing trace with hash -917268371, now seen corresponding path program 2 times [2020-12-23 07:17:10,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:10,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470583382] [2020-12-23 07:17:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:10,365 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:10,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104178564] [2020-12-23 07:17:10,366 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 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 07:17:10,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:17:10,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:17:10,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:17:10,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:10,528 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 07:17:10,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470583382] [2020-12-23 07:17:10,529 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:10,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104178564] [2020-12-23 07:17:10,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:10,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:17:10,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482955739] [2020-12-23 07:17:10,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:17:10,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:10,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:17:10,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:17:10,531 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 7 states. [2020-12-23 07:17:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:10,865 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2020-12-23 07:17:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:17:10,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-23 07:17:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:10,868 INFO L225 Difference]: With dead ends: 118 [2020-12-23 07:17:10,868 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 07:17:10,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:17:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 07:17:10,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 77. [2020-12-23 07:17:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-23 07:17:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-12-23 07:17:10,895 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 29 [2020-12-23 07:17:10,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:10,898 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-12-23 07:17:10,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:17:10,898 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-12-23 07:17:10,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:17:10,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:10,899 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] [2020-12-23 07:17:11,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:11,100 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:11,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:11,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1724808433, now seen corresponding path program 1 times [2020-12-23 07:17:11,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:11,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450409640] [2020-12-23 07:17:11,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:11,113 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:11,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213322120] [2020-12-23 07:17:11,114 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 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 07:17:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:11,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:17:11,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:11,298 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:17:11,318 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 07:17:11,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450409640] [2020-12-23 07:17:11,320 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:11,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213322120] [2020-12-23 07:17:11,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:11,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:17:11,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070836652] [2020-12-23 07:17:11,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:17:11,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:11,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:17:11,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:17:11,329 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 8 states. [2020-12-23 07:17:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:11,581 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-12-23 07:17:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:17:11,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:17:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:11,583 INFO L225 Difference]: With dead ends: 81 [2020-12-23 07:17:11,583 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:17:11,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:17:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:17:11,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-12-23 07:17:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-23 07:17:11,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2020-12-23 07:17:11,596 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 31 [2020-12-23 07:17:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:11,597 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2020-12-23 07:17:11,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:17:11,597 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2020-12-23 07:17:11,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:17:11,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:11,598 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 07:17:11,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 07:17:11,813 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:11,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:11,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1026452976, now seen corresponding path program 2 times [2020-12-23 07:17:11,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:11,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053299780] [2020-12-23 07:17:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:11,828 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:11,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776203509] [2020-12-23 07:17:11,829 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 07:17:11,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:17:11,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:17:11,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:17:11,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:12,020 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:17:12,088 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 07:17:12,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053299780] [2020-12-23 07:17:12,089 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:12,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776203509] [2020-12-23 07:17:12,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:12,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:17:12,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211139342] [2020-12-23 07:17:12,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:17:12,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:12,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:17:12,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:17:12,092 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 9 states. [2020-12-23 07:17:12,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:12,413 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2020-12-23 07:17:12,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:17:12,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-12-23 07:17:12,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:12,415 INFO L225 Difference]: With dead ends: 115 [2020-12-23 07:17:12,416 INFO L226 Difference]: Without dead ends: 103 [2020-12-23 07:17:12,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:17:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-23 07:17:12,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2020-12-23 07:17:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-23 07:17:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-12-23 07:17:12,435 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 31 [2020-12-23 07:17:12,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:12,435 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-12-23 07:17:12,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:17:12,436 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-12-23 07:17:12,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:17:12,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:12,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 07:17:12,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:12,652 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:12,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1421324371, now seen corresponding path program 1 times [2020-12-23 07:17:12,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:12,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087812643] [2020-12-23 07:17:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:12,665 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:12,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446470088] [2020-12-23 07:17:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:12,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:17:12,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:12,875 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:17:12,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087812643] [2020-12-23 07:17:12,876 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:12,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446470088] [2020-12-23 07:17:12,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:12,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:17:12,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259540815] [2020-12-23 07:17:12,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:17:12,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:12,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:17:12,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:17:12,878 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 7 states. [2020-12-23 07:17:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:13,096 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2020-12-23 07:17:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:17:13,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-12-23 07:17:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:13,098 INFO L225 Difference]: With dead ends: 103 [2020-12-23 07:17:13,098 INFO L226 Difference]: Without dead ends: 87 [2020-12-23 07:17:13,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:17:13,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-23 07:17:13,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2020-12-23 07:17:13,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 07:17:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-12-23 07:17:13,110 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 33 [2020-12-23 07:17:13,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:13,110 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-12-23 07:17:13,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:17:13,110 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-12-23 07:17:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 07:17:13,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:13,118 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:13,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:13,332 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:13,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1915973738, now seen corresponding path program 2 times [2020-12-23 07:17:13,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:13,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72241854] [2020-12-23 07:17:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:13,355 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:13,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209338100] [2020-12-23 07:17:13,355 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 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 07:17:13,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:17:13,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:17:13,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 07:17:13,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:13,645 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:17:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:17:13,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72241854] [2020-12-23 07:17:13,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:13,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209338100] [2020-12-23 07:17:13,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:13,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:17:13,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285479557] [2020-12-23 07:17:13,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:17:13,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:13,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:17:13,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:17:13,671 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 11 states. [2020-12-23 07:17:14,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:14,142 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2020-12-23 07:17:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:17:14,142 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-12-23 07:17:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:14,143 INFO L225 Difference]: With dead ends: 86 [2020-12-23 07:17:14,143 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 07:17:14,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:17:14,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 07:17:14,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-12-23 07:17:14,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 07:17:14,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-12-23 07:17:14,154 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 40 [2020-12-23 07:17:14,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:14,154 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-12-23 07:17:14,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:17:14,154 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-12-23 07:17:14,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 07:17:14,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:14,155 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-12-23 07:17:14,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:17:14,366 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1918836651, now seen corresponding path program 3 times [2020-12-23 07:17:14,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:14,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098137296] [2020-12-23 07:17:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:14,393 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:14,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238868887] [2020-12-23 07:17:14,393 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 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 07:17:14,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:17:14,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:17:14,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:17:14,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:58,193 WARN L197 SmtUtils]: Spent 8.57 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-23 07:18:17,863 WARN L197 SmtUtils]: Spent 5.12 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-23 07:18:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-23 07:18:19,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098137296] [2020-12-23 07:18:19,227 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:19,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238868887] [2020-12-23 07:18:19,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:19,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:18:19,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083983945] [2020-12-23 07:18:19,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:18:19,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:19,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:18:19,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=78, Unknown=7, NotChecked=0, Total=110 [2020-12-23 07:18:19,232 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 11 states. [2020-12-23 07:18:32,960 WARN L197 SmtUtils]: Spent 13.11 s on a formula simplification that was a NOOP. DAG size: 41