/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:26:05,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:26:05,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:26:05,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:26:05,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:26:05,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:26:05,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:26:05,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:26:05,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:26:05,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:26:05,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:26:05,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:26:05,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:26:05,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:26:05,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:26:05,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:26:05,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:26:05,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:26:05,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:26:05,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:26:05,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:26:05,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:26:05,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:26:05,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:26:05,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:26:05,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:26:05,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:26:05,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:26:05,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:26:05,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:26:05,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:26:05,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:26:05,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:26:05,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:26:05,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:26:05,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:26:05,905 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 07:26:05,955 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:26:05,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:26:05,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:26:05,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:26:05,960 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:26:05,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:26:05,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:26:05,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:26:05,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:26:05,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:26:05,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:26:05,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:26:05,963 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:26:05,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:26:05,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:26:05,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:26:05,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:26:05,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:26:05,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:26:05,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:26:05,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:26:05,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:26:05,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:26:05,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:26:05,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:26:05,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:26:06,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:26:06,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:26:06,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:26:06,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:26:06,384 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:26:06,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2020-12-23 07:26:06,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4ad3d4a6f/edb774029db949289728856b363374e9/FLAG9b1be17cf [2020-12-23 07:26:07,147 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:26:07,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2020-12-23 07:26:07,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4ad3d4a6f/edb774029db949289728856b363374e9/FLAG9b1be17cf [2020-12-23 07:26:07,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4ad3d4a6f/edb774029db949289728856b363374e9 [2020-12-23 07:26:07,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:26:07,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:26:07,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:26:07,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:26:07,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:26:07,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:26:07" (1/1) ... [2020-12-23 07:26:07,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38ac1164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07, skipping insertion in model container [2020-12-23 07:26:07,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:26:07" (1/1) ... [2020-12-23 07:26:07,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:26:07,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:26:07,460 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.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 07:26:07,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:26:07,524 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:26:07,543 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.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 07:26:07,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:26:07,587 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:26:07,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07 WrapperNode [2020-12-23 07:26:07,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:26:07,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:26:07,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:26:07,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:26:07,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07" (1/1) ... [2020-12-23 07:26:07,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07" (1/1) ... [2020-12-23 07:26:07,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:26:07,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:26:07,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:26:07,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:26:07,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07" (1/1) ... [2020-12-23 07:26:07,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07" (1/1) ... [2020-12-23 07:26:07,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07" (1/1) ... [2020-12-23 07:26:07,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07" (1/1) ... [2020-12-23 07:26:07,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07" (1/1) ... [2020-12-23 07:26:07,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07" (1/1) ... [2020-12-23 07:26:07,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07" (1/1) ... [2020-12-23 07:26:07,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:26:07,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:26:07,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:26:07,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:26:07,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07" (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 07:26:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:26:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:26:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:26:07,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:26:08,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:26:08,179 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-23 07:26:08,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:26:08 BoogieIcfgContainer [2020-12-23 07:26:08,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:26:08,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:26:08,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:26:08,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:26:08,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:26:07" (1/3) ... [2020-12-23 07:26:08,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7b4c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:26:08, skipping insertion in model container [2020-12-23 07:26:08,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:26:07" (2/3) ... [2020-12-23 07:26:08,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7b4c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:26:08, skipping insertion in model container [2020-12-23 07:26:08,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:26:08" (3/3) ... [2020-12-23 07:26:08,200 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound5.c [2020-12-23 07:26:08,211 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:26:08,217 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 07:26:08,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 07:26:08,289 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:26:08,289 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:26:08,289 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:26:08,289 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:26:08,290 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:26:08,290 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:26:08,290 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:26:08,290 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:26:08,313 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-23 07:26:08,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:26:08,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:08,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:08,324 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 07:26:08,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:08,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-23 07:26:08,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:08,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470893088] [2020-12-23 07:26:08,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:08,530 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 07:26:08,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470893088] [2020-12-23 07:26:08,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:26:08,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:26:08,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492291131] [2020-12-23 07:26:08,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:26:08,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:08,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:26:08,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:26:08,555 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-23 07:26:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:08,582 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2020-12-23 07:26:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:26:08,585 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 07:26:08,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:08,598 INFO L225 Difference]: With dead ends: 103 [2020-12-23 07:26:08,599 INFO L226 Difference]: Without dead ends: 49 [2020-12-23 07:26:08,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:26:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-23 07:26:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-23 07:26:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:26:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-12-23 07:26:08,656 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2020-12-23 07:26:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:08,656 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-12-23 07:26:08,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:26:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-12-23 07:26:08,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:26:08,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:08,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:08,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:26:08,663 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 07:26:08,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:08,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-23 07:26:08,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:08,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004121579] [2020-12-23 07:26:08,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:08,888 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 07:26:08,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004121579] [2020-12-23 07:26:08,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:26:08,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:26:08,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301006139] [2020-12-23 07:26:08,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:26:08,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:08,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:26:08,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:26:08,895 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 4 states. [2020-12-23 07:26:09,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:09,051 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-23 07:26:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:26:09,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 07:26:09,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:09,053 INFO L225 Difference]: With dead ends: 50 [2020-12-23 07:26:09,053 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 07:26:09,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:26:09,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 07:26:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-12-23 07:26:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 07:26:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-12-23 07:26:09,063 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2020-12-23 07:26:09,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:09,064 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-12-23 07:26:09,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:26:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-12-23 07:26:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:26:09,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:09,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:09,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:26:09,065 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 07:26:09,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:09,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-23 07:26:09,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:09,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200819841] [2020-12-23 07:26:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:09,084 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:09,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905046082] [2020-12-23 07:26:09,085 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 07:26:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:09,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:26:09,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:09,267 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 07:26:09,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200819841] [2020-12-23 07:26:09,268 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:09,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905046082] [2020-12-23 07:26:09,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:26:09,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:26:09,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048224937] [2020-12-23 07:26:09,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:26:09,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:09,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:26:09,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:26:09,271 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 6 states. [2020-12-23 07:26:09,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:09,779 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-12-23 07:26:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:26:09,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-23 07:26:09,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:09,782 INFO L225 Difference]: With dead ends: 87 [2020-12-23 07:26:09,782 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:26:09,783 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 07:26:09,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:26:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-12-23 07:26:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:26:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-12-23 07:26:09,797 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 9 [2020-12-23 07:26:09,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:09,797 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-12-23 07:26:09,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:26:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-12-23 07:26:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:26:09,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:09,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:10,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 07:26:10,012 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 07:26:10,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:10,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-23 07:26:10,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:10,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159240006] [2020-12-23 07:26:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:10,044 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:10,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693342081] [2020-12-23 07:26:10,045 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 07:26:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:10,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:26:10,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:10,180 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 07:26:10,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159240006] [2020-12-23 07:26:10,180 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:10,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693342081] [2020-12-23 07:26:10,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:26:10,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:26:10,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039106909] [2020-12-23 07:26:10,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:26:10,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:10,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:26:10,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:26:10,186 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 6 states. [2020-12-23 07:26:10,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:10,340 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-12-23 07:26:10,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:26:10,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 07:26:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:10,342 INFO L225 Difference]: With dead ends: 78 [2020-12-23 07:26:10,342 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 07:26:10,342 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 07:26:10,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 07:26:10,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-23 07:26:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:26:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-12-23 07:26:10,353 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 11 [2020-12-23 07:26:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:10,354 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-12-23 07:26:10,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:26:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-12-23 07:26:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:26:10,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:10,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:10,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:10,571 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 07:26:10,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:10,572 INFO L82 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2020-12-23 07:26:10,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:10,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842318732] [2020-12-23 07:26:10,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:10,593 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:10,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433459531] [2020-12-23 07:26:10,593 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 07:26:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:10,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:26:10,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:10,733 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 07:26:10,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842318732] [2020-12-23 07:26:10,734 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:10,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433459531] [2020-12-23 07:26:10,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:26:10,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:26:10,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506542686] [2020-12-23 07:26:10,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:26:10,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:10,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:26:10,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:26:10,737 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 6 states. [2020-12-23 07:26:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:10,910 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-12-23 07:26:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:26:10,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-23 07:26:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:10,912 INFO L225 Difference]: With dead ends: 75 [2020-12-23 07:26:10,912 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 07:26:10,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 07:26:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 07:26:10,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-12-23 07:26:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 07:26:10,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-12-23 07:26:10,920 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2020-12-23 07:26:10,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:10,920 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-12-23 07:26:10,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:26:10,921 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-12-23 07:26:10,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:26:10,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:10,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:11,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:11,135 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 07:26:11,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:11,136 INFO L82 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2020-12-23 07:26:11,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:11,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413816363] [2020-12-23 07:26:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:11,152 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:11,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896163934] [2020-12-23 07:26:11,155 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 07:26:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:11,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:26:11,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:11,304 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 07:26:11,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413816363] [2020-12-23 07:26:11,304 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:11,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896163934] [2020-12-23 07:26:11,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:11,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:26:11,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760871522] [2020-12-23 07:26:11,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:26:11,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:11,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:26:11,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:26:11,307 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 7 states. [2020-12-23 07:26:11,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:11,493 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2020-12-23 07:26:11,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:26:11,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-23 07:26:11,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:11,495 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:26:11,495 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 07:26:11,496 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 07:26:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 07:26:11,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2020-12-23 07:26:11,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-23 07:26:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-12-23 07:26:11,506 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 20 [2020-12-23 07:26:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:11,506 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-12-23 07:26:11,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:26:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-12-23 07:26:11,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:26:11,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:11,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:11,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:11,717 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 07:26:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:11,718 INFO L82 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2020-12-23 07:26:11,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:11,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586842269] [2020-12-23 07:26:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:11,736 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:11,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694275661] [2020-12-23 07:26:11,737 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 07:26:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:11,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:26:11,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:11,981 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 07:26:11,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586842269] [2020-12-23 07:26:11,982 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:11,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694275661] [2020-12-23 07:26:11,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:11,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:26:11,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284570015] [2020-12-23 07:26:11,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:26:11,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:11,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:26:11,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:26:11,984 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2020-12-23 07:26:12,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:12,228 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-12-23 07:26:12,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:26:12,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-23 07:26:12,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:12,230 INFO L225 Difference]: With dead ends: 91 [2020-12-23 07:26:12,230 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 07:26:12,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:26:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 07:26:12,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-12-23 07:26:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:26:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-12-23 07:26:12,240 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 22 [2020-12-23 07:26:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:12,241 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-12-23 07:26:12,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:26:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-12-23 07:26:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:26:12,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:12,242 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 07:26:12,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:26:12,458 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 07:26:12,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:12,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2020-12-23 07:26:12,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:12,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644305230] [2020-12-23 07:26:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:12,474 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:12,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213047683] [2020-12-23 07:26:12,474 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 07:26:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:12,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:26:12,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:12,689 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:26:12,711 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 07:26:12,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644305230] [2020-12-23 07:26:12,712 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:12,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213047683] [2020-12-23 07:26:12,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:12,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:26:12,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64911981] [2020-12-23 07:26:12,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:26:12,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:12,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:26:12,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:26:12,714 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 8 states. [2020-12-23 07:26:13,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:13,173 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-12-23 07:26:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:26:13,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:26:13,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:13,176 INFO L225 Difference]: With dead ends: 81 [2020-12-23 07:26:13,176 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:26:13,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:26:13,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:26:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-12-23 07:26:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:26:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-12-23 07:26:13,186 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 31 [2020-12-23 07:26:13,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:13,186 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-12-23 07:26:13,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:26:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-12-23 07:26:13,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:26:13,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:13,188 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:13,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:13,394 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 07:26:13,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:13,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1811048370, now seen corresponding path program 2 times [2020-12-23 07:26:13,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:13,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378510980] [2020-12-23 07:26:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:13,414 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:13,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336404139] [2020-12-23 07:26:13,415 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 07:26:13,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:26:13,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:26:13,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:26:13,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:13,610 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 07:26:13,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378510980] [2020-12-23 07:26:13,611 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:13,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336404139] [2020-12-23 07:26:13,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:13,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:26:13,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16385552] [2020-12-23 07:26:13,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:26:13,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:13,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:26:13,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:26:13,614 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 8 states. [2020-12-23 07:26:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:13,953 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2020-12-23 07:26:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:26:13,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:26:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:13,955 INFO L225 Difference]: With dead ends: 121 [2020-12-23 07:26:13,955 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 07:26:13,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:26:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 07:26:13,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-12-23 07:26:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:26:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-12-23 07:26:13,966 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 31 [2020-12-23 07:26:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:13,967 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-12-23 07:26:13,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:26:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-12-23 07:26:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:26:13,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:13,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:14,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:14,182 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 07:26:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:14,183 INFO L82 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2020-12-23 07:26:14,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:14,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449710140] [2020-12-23 07:26:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:14,201 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:14,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122285315] [2020-12-23 07:26:14,202 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 07:26:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:26:14,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:26:14,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:14,413 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:26:14,433 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 07:26:14,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449710140] [2020-12-23 07:26:14,434 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:14,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122285315] [2020-12-23 07:26:14,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:14,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:26:14,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403929024] [2020-12-23 07:26:14,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:26:14,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:14,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:26:14,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:26:14,437 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 8 states. [2020-12-23 07:26:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:14,824 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2020-12-23 07:26:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:26:14,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-23 07:26:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:14,826 INFO L225 Difference]: With dead ends: 100 [2020-12-23 07:26:14,826 INFO L226 Difference]: Without dead ends: 98 [2020-12-23 07:26:14,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:26:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-23 07:26:14,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-12-23 07:26:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:26:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-12-23 07:26:14,837 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 33 [2020-12-23 07:26:14,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:14,837 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-12-23 07:26:14,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:26:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-12-23 07:26:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:26:14,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:14,839 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:15,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:26:15,054 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 07:26:15,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:15,055 INFO L82 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2020-12-23 07:26:15,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:15,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66340128] [2020-12-23 07:26:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:15,067 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:15,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416579505] [2020-12-23 07:26:15,068 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 07:26:15,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:26:15,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:26:15,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 07:26:15,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:15,318 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 07:26:15,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66340128] [2020-12-23 07:26:15,319 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:15,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416579505] [2020-12-23 07:26:15,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:15,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:26:15,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780933787] [2020-12-23 07:26:15,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:26:15,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:15,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:26:15,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:26:15,326 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 10 states. [2020-12-23 07:26:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:15,648 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-12-23 07:26:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:26:15,648 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-23 07:26:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:15,649 INFO L225 Difference]: With dead ends: 111 [2020-12-23 07:26:15,650 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 07:26:15,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:26:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 07:26:15,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2020-12-23 07:26:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 07:26:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-12-23 07:26:15,660 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 33 [2020-12-23 07:26:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:15,661 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-12-23 07:26:15,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:26:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-12-23 07:26:15,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 07:26:15,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:15,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:15,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:15,875 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 07:26:15,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:15,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2020-12-23 07:26:15,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:15,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765241395] [2020-12-23 07:26:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:15,889 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:15,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920627280] [2020-12-23 07:26:15,889 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 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 07:26:15,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:26:15,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:26:15,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-23 07:26:15,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:16,253 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:26:16,278 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 07:26:16,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765241395] [2020-12-23 07:26:16,278 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:16,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920627280] [2020-12-23 07:26:16,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:16,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:26:16,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591243082] [2020-12-23 07:26:16,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:26:16,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:16,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:26:16,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:26:16,287 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 10 states. [2020-12-23 07:26:18,655 WARN L197 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2020-12-23 07:26:18,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:18,990 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2020-12-23 07:26:18,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:26:18,991 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-12-23 07:26:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:18,992 INFO L225 Difference]: With dead ends: 89 [2020-12-23 07:26:18,992 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:26:18,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:26:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:26:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-12-23 07:26:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 07:26:19,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2020-12-23 07:26:19,004 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 42 [2020-12-23 07:26:19,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:19,005 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2020-12-23 07:26:19,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:26:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2020-12-23 07:26:19,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 07:26:19,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:19,008 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:19,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:19,222 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 07:26:19,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:19,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1748370537, now seen corresponding path program 3 times [2020-12-23 07:26:19,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:19,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463668869] [2020-12-23 07:26:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:19,238 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:19,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127354317] [2020-12-23 07:26:19,238 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 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 07:26:19,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:26:19,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:26:19,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:26:19,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:37,117 WARN L197 SmtUtils]: Spent 7.13 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-23 07:26:50,031 WARN L197 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-23 07:26:50,122 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 07:26:50,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463668869] [2020-12-23 07:26:50,123 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:26:50,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127354317] [2020-12-23 07:26:50,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:26:50,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:26:50,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120908825] [2020-12-23 07:26:50,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:26:50,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:26:50,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:26:50,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=80, Unknown=7, NotChecked=0, Total=110 [2020-12-23 07:26:50,125 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 11 states. [2020-12-23 07:27:03,478 WARN L197 SmtUtils]: Spent 4.30 s on a formula simplification that was a NOOP. DAG size: 46 [2020-12-23 07:27:15,206 WARN L197 SmtUtils]: Spent 11.69 s on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-12-23 07:27:41,406 WARN L197 SmtUtils]: Spent 20.51 s on a formula simplification that was a NOOP. DAG size: 53 [2020-12-23 07:27:42,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:27:42,054 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-12-23 07:27:42,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:27:42,055 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-12-23 07:27:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:27:42,055 INFO L225 Difference]: With dead ends: 78 [2020-12-23 07:27:42,056 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 07:27:42,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 77.4s TimeCoverageRelationStatistics Valid=55, Invalid=147, Unknown=8, NotChecked=0, Total=210 [2020-12-23 07:27:42,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 07:27:42,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-12-23 07:27:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-23 07:27:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2020-12-23 07:27:42,072 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 42 [2020-12-23 07:27:42,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:27:42,072 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2020-12-23 07:27:42,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:27:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2020-12-23 07:27:42,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:27:42,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:27:42,074 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 07:27:42,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:27:42,275 INFO L429 AbstractCegarLoop]: === Iteration 14 === [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 07:27:42,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:27:42,278 INFO L82 PathProgramCache]: Analyzing trace with hash -851717222, now seen corresponding path program 3 times [2020-12-23 07:27:42,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:27:42,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106805092] [2020-12-23 07:27:42,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:27:42,288 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:27:42,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806538382] [2020-12-23 07:27:42,288 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 07:27:42,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:27:42,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:27:42,428 WARN L261 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-23 07:27:42,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:27:42,447 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:27:44,722 WARN L197 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 07:27:49,270 WARN L197 SmtUtils]: Spent 2.45 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-23 07:28:12,002 WARN L197 SmtUtils]: Spent 15.16 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-23 07:28:22,612 WARN L197 SmtUtils]: Spent 6.46 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-23 07:28:55,757 WARN L197 SmtUtils]: Spent 14.53 s on a formula simplification that was a NOOP. DAG size: 39 [2020-12-23 07:29:30,983 WARN L197 SmtUtils]: Spent 20.04 s on a formula simplification that was a NOOP. DAG size: 68