/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/hard2_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:49:45,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:49:45,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:49:45,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:49:45,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:49:45,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:49:45,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:49:45,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:49:45,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:49:45,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:49:45,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:49:45,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:49:45,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:49:45,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:49:45,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:49:45,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:49:45,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:49:45,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:49:45,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:49:45,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:49:45,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:49:45,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:49:45,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:49:45,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:49:45,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:49:45,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:49:45,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:49:45,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:49:45,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:49:45,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:49:45,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:49:45,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:49:45,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:49:45,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:49:45,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:49:45,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:49:45,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:49:45,890 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:49:45,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:49:45,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:49:45,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:49:45,893 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:49:45,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:49:45,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:49:45,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:49:45,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:49:45,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:49:45,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:49:45,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:49:45,895 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:49:45,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:49:45,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:49:45,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:49:45,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:49:45,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:49:45,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:49:45,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:49:45,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:49:45,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:49:45,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:49:45,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:49:45,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:49:45,898 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:49:46,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:49:46,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:49:46,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:49:46,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:49:46,372 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:49:46,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c [2021-01-06 17:49:46,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6995d8490/825de07be86c4e44906ca481dd533b28/FLAGf0e31cfef [2021-01-06 17:49:47,177 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:49:47,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c [2021-01-06 17:49:47,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6995d8490/825de07be86c4e44906ca481dd533b28/FLAGf0e31cfef [2021-01-06 17:49:47,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6995d8490/825de07be86c4e44906ca481dd533b28 [2021-01-06 17:49:47,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:49:47,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:49:47,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:49:47,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:49:47,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:49:47,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:49:47" (1/1) ... [2021-01-06 17:49:47,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d3df91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47, skipping insertion in model container [2021-01-06 17:49:47,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:49:47" (1/1) ... [2021-01-06 17:49:47,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:49:47,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:49:47,732 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/hard2_unwindbound10.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:49:47,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:49:47,767 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:49:47,783 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/hard2_unwindbound10.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:49:47,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:49:47,811 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:49:47,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47 WrapperNode [2021-01-06 17:49:47,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:49:47,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:49:47,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:49:47,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:49:47,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47" (1/1) ... [2021-01-06 17:49:47,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47" (1/1) ... [2021-01-06 17:49:47,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:49:47,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:49:47,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:49:47,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:49:47,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47" (1/1) ... [2021-01-06 17:49:47,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47" (1/1) ... [2021-01-06 17:49:47,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47" (1/1) ... [2021-01-06 17:49:47,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47" (1/1) ... [2021-01-06 17:49:47,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47" (1/1) ... [2021-01-06 17:49:47,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47" (1/1) ... [2021-01-06 17:49:47,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47" (1/1) ... [2021-01-06 17:49:47,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:49:47,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:49:47,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:49:47,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:49:47,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47" (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 [2021-01-06 17:49:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:49:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:49:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:49:48,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:49:48,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:49:48,454 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-01-06 17:49:48,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:49:48 BoogieIcfgContainer [2021-01-06 17:49:48,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:49:48,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:49:48,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:49:48,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:49:48,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:49:47" (1/3) ... [2021-01-06 17:49:48,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e1f044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:49:48, skipping insertion in model container [2021-01-06 17:49:48,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:47" (2/3) ... [2021-01-06 17:49:48,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e1f044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:49:48, skipping insertion in model container [2021-01-06 17:49:48,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:49:48" (3/3) ... [2021-01-06 17:49:48,513 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound10.c [2021-01-06 17:49:48,530 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:49:48,541 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:49:48,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:49:48,644 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:49:48,645 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:49:48,645 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:49:48,645 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:49:48,645 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:49:48,645 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:49:48,645 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:49:48,646 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:49:48,669 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-01-06 17:49:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:49:48,677 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:48,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:49:48,680 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:48,688 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 17:49:48,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:48,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055217933] [2021-01-06 17:49:48,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:49,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055217933] [2021-01-06 17:49:49,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:49,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:49:49,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034239348] [2021-01-06 17:49:49,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:49:49,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:49,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:49:49,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:49:49,066 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2021-01-06 17:49:49,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:49,242 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2021-01-06 17:49:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:49:49,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-06 17:49:49,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:49,263 INFO L225 Difference]: With dead ends: 102 [2021-01-06 17:49:49,263 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 17:49:49,266 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 [2021-01-06 17:49:49,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 17:49:49,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2021-01-06 17:49:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 17:49:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-01-06 17:49:49,306 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2021-01-06 17:49:49,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:49,306 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-01-06 17:49:49,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:49:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-01-06 17:49:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:49:49,307 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:49,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:49,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:49:49,308 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:49,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:49,309 INFO L82 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2021-01-06 17:49:49,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:49,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301144021] [2021-01-06 17:49:49,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:49,324 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:49,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664787337] [2021-01-06 17:49:49,325 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 [2021-01-06 17:49:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:49,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:49:49,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:49,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301144021] [2021-01-06 17:49:49,492 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:49,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664787337] [2021-01-06 17:49:49,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:49,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:49:49,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234005707] [2021-01-06 17:49:49,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:49:49,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:49,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:49:49,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:49:49,496 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2021-01-06 17:49:49,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:49,521 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2021-01-06 17:49:49,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:49:49,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-06 17:49:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:49,524 INFO L225 Difference]: With dead ends: 54 [2021-01-06 17:49:49,524 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 17:49:49,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:49:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 17:49:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-01-06 17:49:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:49:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-01-06 17:49:49,534 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-01-06 17:49:49,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:49,534 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-01-06 17:49:49,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:49:49,535 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-01-06 17:49:49,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:49:49,535 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:49,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:49,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:49:49,750 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:49,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:49,752 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-01-06 17:49:49,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:49,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230715374] [2021-01-06 17:49:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:49,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230715374] [2021-01-06 17:49:49,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:49,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:49:49,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823824951] [2021-01-06 17:49:49,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:49:49,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:49,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:49:49,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:49:49,820 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2021-01-06 17:49:49,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:49,960 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-01-06 17:49:49,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:49:49,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-06 17:49:49,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:49,969 INFO L225 Difference]: With dead ends: 54 [2021-01-06 17:49:49,969 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:49:49,970 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 [2021-01-06 17:49:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:49:49,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-01-06 17:49:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 17:49:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-01-06 17:49:49,996 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2021-01-06 17:49:49,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:49,996 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-01-06 17:49:49,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:49:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-01-06 17:49:49,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:49:49,999 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:50,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:50,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:49:50,000 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:50,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:50,001 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-01-06 17:49:50,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:50,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818502782] [2021-01-06 17:49:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:50,029 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:50,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763703608] [2021-01-06 17:49:50,035 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 [2021-01-06 17:49:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:50,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:49:50,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:50,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818502782] [2021-01-06 17:49:50,214 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:50,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763703608] [2021-01-06 17:49:50,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:50,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:49:50,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177293419] [2021-01-06 17:49:50,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:49:50,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:50,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:49:50,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:50,217 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2021-01-06 17:49:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:50,378 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2021-01-06 17:49:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:49:50,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:49:50,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:50,380 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:49:50,380 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 17:49:50,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:49:50,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 17:49:50,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2021-01-06 17:49:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-06 17:49:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-01-06 17:49:50,392 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2021-01-06 17:49:50,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:50,393 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-01-06 17:49:50,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:49:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-01-06 17:49:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:49:50,394 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:50,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:50,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:50,608 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:50,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2021-01-06 17:49:50,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:50,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257579015] [2021-01-06 17:49:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:50,633 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:50,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174120227] [2021-01-06 17:49:50,634 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 [2021-01-06 17:49:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:50,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:49:50,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:50,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257579015] [2021-01-06 17:49:50,819 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:50,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174120227] [2021-01-06 17:49:50,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:50,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:49:50,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094976418] [2021-01-06 17:49:50,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:49:50,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:50,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:49:50,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:49:50,822 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2021-01-06 17:49:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:50,930 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2021-01-06 17:49:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:49:50,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:49:50,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:50,932 INFO L225 Difference]: With dead ends: 66 [2021-01-06 17:49:50,933 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 17:49:50,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:49:50,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 17:49:50,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2021-01-06 17:49:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 17:49:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2021-01-06 17:49:50,943 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2021-01-06 17:49:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:50,943 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2021-01-06 17:49:50,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:49:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2021-01-06 17:49:50,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:49:50,945 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:50,945 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:51,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:51,159 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:51,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2021-01-06 17:49:51,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:51,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378376170] [2021-01-06 17:49:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:51,185 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:51,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291818728] [2021-01-06 17:49:51,188 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 [2021-01-06 17:49:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:51,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:49:51,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:51,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378376170] [2021-01-06 17:49:51,375 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:51,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291818728] [2021-01-06 17:49:51,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:51,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:49:51,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010582839] [2021-01-06 17:49:51,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:49:51,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:51,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:49:51,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:49:51,379 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2021-01-06 17:49:51,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:51,440 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2021-01-06 17:49:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:49:51,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 17:49:51,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:51,444 INFO L225 Difference]: With dead ends: 78 [2021-01-06 17:49:51,444 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:49:51,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:49:51,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-01-06 17:49:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 17:49:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-01-06 17:49:51,473 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2021-01-06 17:49:51,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:51,474 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-01-06 17:49:51,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:49:51,474 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-01-06 17:49:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:49:51,476 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:51,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:51,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:51,692 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:51,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:51,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2021-01-06 17:49:51,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:51,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625448539] [2021-01-06 17:49:51,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:51,709 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:51,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430977635] [2021-01-06 17:49:51,709 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 [2021-01-06 17:49:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:51,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:49:51,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:51,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:51,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625448539] [2021-01-06 17:49:51,884 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:51,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430977635] [2021-01-06 17:49:51,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:51,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:49:51,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612741221] [2021-01-06 17:49:51,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:49:51,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:51,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:49:51,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:49:51,887 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2021-01-06 17:49:52,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:52,075 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2021-01-06 17:49:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:49:52,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 17:49:52,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:52,077 INFO L225 Difference]: With dead ends: 117 [2021-01-06 17:49:52,077 INFO L226 Difference]: Without dead ends: 77 [2021-01-06 17:49:52,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:49:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-06 17:49:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2021-01-06 17:49:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:49:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-01-06 17:49:52,087 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 18 [2021-01-06 17:49:52,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:52,087 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-01-06 17:49:52,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:49:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-01-06 17:49:52,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:49:52,088 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:52,088 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:52,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:49:52,302 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:52,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:52,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2021-01-06 17:49:52,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:52,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564103666] [2021-01-06 17:49:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:52,319 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:52,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519695589] [2021-01-06 17:49:52,321 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 [2021-01-06 17:49:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:52,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:49:52,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:52,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564103666] [2021-01-06 17:49:52,431 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:52,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519695589] [2021-01-06 17:49:52,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:52,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:49:52,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797922363] [2021-01-06 17:49:52,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:49:52,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:52,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:49:52,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:52,433 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 6 states. [2021-01-06 17:49:52,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:52,475 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2021-01-06 17:49:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:49:52,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-01-06 17:49:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:52,481 INFO L225 Difference]: With dead ends: 70 [2021-01-06 17:49:52,481 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 17:49:52,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:52,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 17:49:52,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2021-01-06 17:49:52,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:49:52,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2021-01-06 17:49:52,506 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2021-01-06 17:49:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:52,506 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2021-01-06 17:49:52,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:49:52,508 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2021-01-06 17:49:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:49:52,509 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:52,509 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:52,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:52,711 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:52,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:52,712 INFO L82 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2021-01-06 17:49:52,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:52,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373366968] [2021-01-06 17:49:52,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:52,734 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:52,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [760057342] [2021-01-06 17:49:52,735 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 [2021-01-06 17:49:52,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:49:52,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:52,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:49:52,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-06 17:49:52,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373366968] [2021-01-06 17:49:52,834 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:52,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760057342] [2021-01-06 17:49:52,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:52,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:49:52,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986654086] [2021-01-06 17:49:52,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:49:52,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:52,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:49:52,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:49:52,837 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 5 states. [2021-01-06 17:49:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:52,881 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2021-01-06 17:49:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:49:52,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-01-06 17:49:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:52,883 INFO L225 Difference]: With dead ends: 99 [2021-01-06 17:49:52,883 INFO L226 Difference]: Without dead ends: 71 [2021-01-06 17:49:52,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:52,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-01-06 17:49:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2021-01-06 17:49:52,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-06 17:49:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2021-01-06 17:49:52,892 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 26 [2021-01-06 17:49:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:52,892 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2021-01-06 17:49:52,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:49:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2021-01-06 17:49:52,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:49:52,893 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:52,893 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-01-06 17:49:53,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:53,099 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:53,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:53,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2021-01-06 17:49:53,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:53,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760375851] [2021-01-06 17:49:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:53,122 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:53,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059783487] [2021-01-06 17:49:53,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:53,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:49:53,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:53,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:49:53,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:53,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760375851] [2021-01-06 17:49:53,312 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:53,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059783487] [2021-01-06 17:49:53,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:53,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:49:53,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521957702] [2021-01-06 17:49:53,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:49:53,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:53,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:49:53,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:53,314 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 8 states. [2021-01-06 17:49:53,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:53,557 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2021-01-06 17:49:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:49:53,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2021-01-06 17:49:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:53,561 INFO L225 Difference]: With dead ends: 138 [2021-01-06 17:49:53,561 INFO L226 Difference]: Without dead ends: 124 [2021-01-06 17:49:53,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:49:53,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-01-06 17:49:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2021-01-06 17:49:53,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 17:49:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2021-01-06 17:49:53,591 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 26 [2021-01-06 17:49:53,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:53,591 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2021-01-06 17:49:53,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:49:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2021-01-06 17:49:53,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:49:53,592 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:53,593 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:53,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:49:53,808 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:53,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:53,809 INFO L82 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2021-01-06 17:49:53,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:53,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461076611] [2021-01-06 17:49:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:53,821 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:53,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330719241] [2021-01-06 17:49:53,821 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 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 [2021-01-06 17:49:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:53,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:49:53,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:53,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461076611] [2021-01-06 17:49:53,939 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:53,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330719241] [2021-01-06 17:49:53,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:53,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:49:53,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166145845] [2021-01-06 17:49:53,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:49:53,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:53,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:49:53,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:53,941 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 6 states. [2021-01-06 17:49:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:54,011 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2021-01-06 17:49:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:49:54,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-01-06 17:49:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:54,014 INFO L225 Difference]: With dead ends: 100 [2021-01-06 17:49:54,014 INFO L226 Difference]: Without dead ends: 92 [2021-01-06 17:49:54,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:54,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-06 17:49:54,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-01-06 17:49:54,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 17:49:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2021-01-06 17:49:54,024 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 27 [2021-01-06 17:49:54,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:54,024 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2021-01-06 17:49:54,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:49:54,025 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2021-01-06 17:49:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:49:54,030 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:54,030 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:54,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:54,245 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:54,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:54,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2021-01-06 17:49:54,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:54,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58637215] [2021-01-06 17:49:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:54,257 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:54,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693579280] [2021-01-06 17:49:54,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:54,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:49:54,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:54,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58637215] [2021-01-06 17:49:54,477 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:54,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693579280] [2021-01-06 17:49:54,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:54,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:49:54,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036388249] [2021-01-06 17:49:54,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:49:54,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:54,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:49:54,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:49:54,485 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 7 states. [2021-01-06 17:49:54,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:54,650 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2021-01-06 17:49:54,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:49:54,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2021-01-06 17:49:54,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:54,651 INFO L225 Difference]: With dead ends: 114 [2021-01-06 17:49:54,651 INFO L226 Difference]: Without dead ends: 112 [2021-01-06 17:49:54,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:49:54,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-01-06 17:49:54,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2021-01-06 17:49:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-01-06 17:49:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2021-01-06 17:49:54,660 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 29 [2021-01-06 17:49:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:54,661 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2021-01-06 17:49:54,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:49:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2021-01-06 17:49:54,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 17:49:54,662 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:54,662 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:54,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:54,876 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:54,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:54,877 INFO L82 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2021-01-06 17:49:54,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:54,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572379298] [2021-01-06 17:49:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:54,896 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:54,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964640502] [2021-01-06 17:49:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:54,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:49:54,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:55,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572379298] [2021-01-06 17:49:55,053 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:55,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964640502] [2021-01-06 17:49:55,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:55,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:49:55,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533962097] [2021-01-06 17:49:55,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:49:55,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:55,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:49:55,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:49:55,056 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 7 states. [2021-01-06 17:49:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:55,095 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2021-01-06 17:49:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:49:55,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2021-01-06 17:49:55,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:55,096 INFO L225 Difference]: With dead ends: 112 [2021-01-06 17:49:55,097 INFO L226 Difference]: Without dead ends: 102 [2021-01-06 17:49:55,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:55,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-06 17:49:55,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-01-06 17:49:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-01-06 17:49:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2021-01-06 17:49:55,107 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 30 [2021-01-06 17:49:55,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:55,108 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2021-01-06 17:49:55,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:49:55,108 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2021-01-06 17:49:55,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:49:55,111 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:55,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:55,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:49:55,317 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:55,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1412607120, now seen corresponding path program 1 times [2021-01-06 17:49:55,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:55,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391248957] [2021-01-06 17:49:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:55,328 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:55,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832565188] [2021-01-06 17:49:55,329 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 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 [2021-01-06 17:49:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:55,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:49:55,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:55,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391248957] [2021-01-06 17:49:55,543 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:55,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832565188] [2021-01-06 17:49:55,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:55,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:49:55,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106956740] [2021-01-06 17:49:55,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:49:55,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:55,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:49:55,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:55,549 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand 8 states. [2021-01-06 17:49:55,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:55,728 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2021-01-06 17:49:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:49:55,729 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:49:55,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:55,730 INFO L225 Difference]: With dead ends: 130 [2021-01-06 17:49:55,730 INFO L226 Difference]: Without dead ends: 102 [2021-01-06 17:49:55,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:49:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-06 17:49:55,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2021-01-06 17:49:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-01-06 17:49:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2021-01-06 17:49:55,739 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 31 [2021-01-06 17:49:55,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:55,739 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2021-01-06 17:49:55,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:49:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2021-01-06 17:49:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:49:55,740 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:55,740 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2021-01-06 17:49:55,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:49:55,954 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:55,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2021-01-06 17:49:55,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:55,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738196341] [2021-01-06 17:49:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:55,965 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:55,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643356532] [2021-01-06 17:49:55,965 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:56,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:49:56,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:56,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:49:56,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-06 17:49:56,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738196341] [2021-01-06 17:49:56,211 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:56,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643356532] [2021-01-06 17:49:56,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:56,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:49:56,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652251022] [2021-01-06 17:49:56,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:49:56,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:56,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:49:56,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:49:56,213 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 9 states. [2021-01-06 17:49:56,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:56,443 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2021-01-06 17:49:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:49:56,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2021-01-06 17:49:56,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:56,445 INFO L225 Difference]: With dead ends: 127 [2021-01-06 17:49:56,445 INFO L226 Difference]: Without dead ends: 117 [2021-01-06 17:49:56,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:49:56,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-01-06 17:49:56,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2021-01-06 17:49:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-01-06 17:49:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2021-01-06 17:49:56,456 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 34 [2021-01-06 17:49:56,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:56,457 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2021-01-06 17:49:56,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:49:56,457 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2021-01-06 17:49:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:49:56,458 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:56,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:56,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:49:56,672 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:56,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:56,673 INFO L82 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2021-01-06 17:49:56,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:56,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584495683] [2021-01-06 17:49:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:56,683 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:56,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028233055] [2021-01-06 17:49:56,684 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:56,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:49:56,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:56,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584495683] [2021-01-06 17:49:56,891 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:56,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028233055] [2021-01-06 17:49:56,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:56,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:49:56,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096092297] [2021-01-06 17:49:56,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:49:56,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:56,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:49:56,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:56,894 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand 8 states. [2021-01-06 17:49:57,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:57,055 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-01-06 17:49:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:49:57,056 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2021-01-06 17:49:57,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:57,057 INFO L225 Difference]: With dead ends: 100 [2021-01-06 17:49:57,057 INFO L226 Difference]: Without dead ends: 83 [2021-01-06 17:49:57,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:49:57,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-01-06 17:49:57,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-01-06 17:49:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-01-06 17:49:57,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2021-01-06 17:49:57,066 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 34 [2021-01-06 17:49:57,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:57,066 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2021-01-06 17:49:57,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:49:57,067 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2021-01-06 17:49:57,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 17:49:57,067 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:57,067 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:57,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:57,283 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:57,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:57,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2021-01-06 17:49:57,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:57,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627287344] [2021-01-06 17:49:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:57,294 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:57,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706287570] [2021-01-06 17:49:57,294 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:57,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:49:57,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:57,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:49:57,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:57,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627287344] [2021-01-06 17:49:57,448 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:57,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706287570] [2021-01-06 17:49:57,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:57,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:49:57,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007618304] [2021-01-06 17:49:57,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:49:57,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:57,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:49:57,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:49:57,450 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 7 states. [2021-01-06 17:49:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:57,510 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2021-01-06 17:49:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:49:57,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2021-01-06 17:49:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:57,512 INFO L225 Difference]: With dead ends: 93 [2021-01-06 17:49:57,512 INFO L226 Difference]: Without dead ends: 85 [2021-01-06 17:49:57,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:49:57,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-01-06 17:49:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-01-06 17:49:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-01-06 17:49:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2021-01-06 17:49:57,522 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 35 [2021-01-06 17:49:57,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:57,522 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2021-01-06 17:49:57,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:49:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2021-01-06 17:49:57,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:49:57,522 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:57,523 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:57,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:49:57,737 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2021-01-06 17:49:57,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:57,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350147333] [2021-01-06 17:49:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:57,753 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:57,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276734572] [2021-01-06 17:49:57,753 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:57,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:49:57,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:57,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:49:57,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:57,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350147333] [2021-01-06 17:49:57,993 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:57,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276734572] [2021-01-06 17:49:57,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:57,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:49:57,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790808253] [2021-01-06 17:49:57,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:49:57,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:57,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:49:57,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:57,997 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 8 states. [2021-01-06 17:49:58,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:58,325 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2021-01-06 17:49:58,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:49:58,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2021-01-06 17:49:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:58,327 INFO L225 Difference]: With dead ends: 157 [2021-01-06 17:49:58,327 INFO L226 Difference]: Without dead ends: 119 [2021-01-06 17:49:58,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:49:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-01-06 17:49:58,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2021-01-06 17:49:58,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-01-06 17:49:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2021-01-06 17:49:58,337 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 37 [2021-01-06 17:49:58,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:58,337 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2021-01-06 17:49:58,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:49:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2021-01-06 17:49:58,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 17:49:58,338 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:58,338 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:58,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:49:58,554 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:58,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:58,555 INFO L82 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2021-01-06 17:49:58,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:58,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953905841] [2021-01-06 17:49:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:58,564 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:58,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854285551] [2021-01-06 17:49:58,565 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:58,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:49:58,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:58,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:49:58,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:58,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953905841] [2021-01-06 17:49:58,693 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:58,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854285551] [2021-01-06 17:49:58,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:58,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:49:58,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407916423] [2021-01-06 17:49:58,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:49:58,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:58,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:49:58,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:58,696 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand 8 states. [2021-01-06 17:49:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:58,738 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2021-01-06 17:49:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:49:58,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2021-01-06 17:49:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:58,739 INFO L225 Difference]: With dead ends: 118 [2021-01-06 17:49:58,739 INFO L226 Difference]: Without dead ends: 108 [2021-01-06 17:49:58,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:49:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-01-06 17:49:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2021-01-06 17:49:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-01-06 17:49:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-01-06 17:49:58,750 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 38 [2021-01-06 17:49:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:58,750 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-01-06 17:49:58,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:49:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-01-06 17:49:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 17:49:58,751 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:58,751 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:58,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:58,967 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:58,968 INFO L82 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2021-01-06 17:49:58,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:58,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291807372] [2021-01-06 17:49:58,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:58,977 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:58,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942384740] [2021-01-06 17:49:58,978 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:59,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-06 17:49:59,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:59,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:49:59,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:59,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291807372] [2021-01-06 17:49:59,126 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:59,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942384740] [2021-01-06 17:49:59,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:59,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:49:59,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762808993] [2021-01-06 17:49:59,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:49:59,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:59,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:49:59,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:59,128 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 8 states. [2021-01-06 17:49:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:59,190 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2021-01-06 17:49:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:49:59,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2021-01-06 17:49:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:59,191 INFO L225 Difference]: With dead ends: 117 [2021-01-06 17:49:59,191 INFO L226 Difference]: Without dead ends: 109 [2021-01-06 17:49:59,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:49:59,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-06 17:49:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-01-06 17:49:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-01-06 17:49:59,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2021-01-06 17:49:59,200 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 43 [2021-01-06 17:49:59,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:59,201 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2021-01-06 17:49:59,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:49:59,201 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2021-01-06 17:49:59,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:49:59,201 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:59,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-01-06 17:49:59,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:59,416 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:59,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2021-01-06 17:49:59,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:59,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33794833] [2021-01-06 17:49:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:59,426 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:59,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801984910] [2021-01-06 17:49:59,426 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:59,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:49:59,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:59,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:49:59,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:59,690 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:49:59,711 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:49:59,720 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 17:49:59,739 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:49:59,741 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:49:59,751 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:49:59,761 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:49:59,766 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:49:59,787 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:49:59,795 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 17:49:59,806 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:49:59,810 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:49:59,815 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:49:59,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:49:59,829 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:50:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 17:50:00,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33794833] [2021-01-06 17:50:00,244 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:00,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801984910] [2021-01-06 17:50:00,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:00,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:50:00,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487555500] [2021-01-06 17:50:00,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:50:00,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:00,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:50:00,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:50:00,246 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand 10 states. [2021-01-06 17:50:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:00,465 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2021-01-06 17:50:00,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:50:00,466 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2021-01-06 17:50:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:00,467 INFO L225 Difference]: With dead ends: 113 [2021-01-06 17:50:00,467 INFO L226 Difference]: Without dead ends: 109 [2021-01-06 17:50:00,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:50:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-06 17:50:00,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2021-01-06 17:50:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-01-06 17:50:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2021-01-06 17:50:00,478 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 44 [2021-01-06 17:50:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:00,478 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2021-01-06 17:50:00,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:50:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2021-01-06 17:50:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:50:00,479 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:00,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:00,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:00,694 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:00,695 INFO L82 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2021-01-06 17:50:00,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:00,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217306262] [2021-01-06 17:50:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:00,705 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:00,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679139016] [2021-01-06 17:50:00,705 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:00,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:50:00,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:00,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 17:50:00,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:00,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217306262] [2021-01-06 17:50:00,858 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:00,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679139016] [2021-01-06 17:50:00,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:00,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:00,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400977385] [2021-01-06 17:50:00,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:50:00,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:00,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:50:00,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:00,860 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 9 states. [2021-01-06 17:50:00,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:00,940 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2021-01-06 17:50:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:50:00,941 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2021-01-06 17:50:00,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:00,942 INFO L225 Difference]: With dead ends: 127 [2021-01-06 17:50:00,942 INFO L226 Difference]: Without dead ends: 117 [2021-01-06 17:50:00,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:00,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-01-06 17:50:00,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-01-06 17:50:00,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-06 17:50:00,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2021-01-06 17:50:00,953 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 45 [2021-01-06 17:50:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:00,954 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2021-01-06 17:50:00,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:50:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2021-01-06 17:50:00,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 17:50:00,955 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:00,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:01,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 17:50:01,169 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:01,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:01,169 INFO L82 PathProgramCache]: Analyzing trace with hash 494883615, now seen corresponding path program 2 times [2021-01-06 17:50:01,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:01,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946895587] [2021-01-06 17:50:01,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:01,177 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:01,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758585066] [2021-01-06 17:50:01,178 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:01,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:50:01,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:01,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:50:01,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-01-06 17:50:01,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946895587] [2021-01-06 17:50:01,383 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:01,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758585066] [2021-01-06 17:50:01,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:01,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:50:01,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119537702] [2021-01-06 17:50:01,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:50:01,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:01,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:50:01,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:01,385 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand 11 states. [2021-01-06 17:50:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:01,823 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2021-01-06 17:50:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:50:01,824 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2021-01-06 17:50:01,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:01,825 INFO L225 Difference]: With dead ends: 132 [2021-01-06 17:50:01,825 INFO L226 Difference]: Without dead ends: 120 [2021-01-06 17:50:01,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:50:01,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-01-06 17:50:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2021-01-06 17:50:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-01-06 17:50:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-01-06 17:50:01,837 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 49 [2021-01-06 17:50:01,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:01,837 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-01-06 17:50:01,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:50:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-01-06 17:50:01,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 17:50:01,838 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:01,838 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:02,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-06 17:50:02,054 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:02,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:02,055 INFO L82 PathProgramCache]: Analyzing trace with hash -2054725181, now seen corresponding path program 4 times [2021-01-06 17:50:02,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:02,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247154663] [2021-01-06 17:50:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:02,063 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:02,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156534733] [2021-01-06 17:50:02,063 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:02,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:50:02,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:02,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 17:50:02,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:02,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247154663] [2021-01-06 17:50:02,263 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:02,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156534733] [2021-01-06 17:50:02,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:02,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:02,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392097564] [2021-01-06 17:50:02,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:50:02,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:02,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:50:02,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:02,265 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 9 states. [2021-01-06 17:50:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:02,367 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2021-01-06 17:50:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:50:02,367 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2021-01-06 17:50:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:02,368 INFO L225 Difference]: With dead ends: 118 [2021-01-06 17:50:02,368 INFO L226 Difference]: Without dead ends: 110 [2021-01-06 17:50:02,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:50:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-01-06 17:50:02,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-01-06 17:50:02,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-01-06 17:50:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-01-06 17:50:02,384 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 51 [2021-01-06 17:50:02,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:02,385 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-01-06 17:50:02,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:50:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-01-06 17:50:02,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 17:50:02,386 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:02,386 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:02,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:02,598 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:02,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:02,599 INFO L82 PathProgramCache]: Analyzing trace with hash -12168916, now seen corresponding path program 4 times [2021-01-06 17:50:02,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:02,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687691647] [2021-01-06 17:50:02,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:02,609 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:02,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879134859] [2021-01-06 17:50:02,609 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:02,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:50:02,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:02,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:50:02,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:02,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687691647] [2021-01-06 17:50:02,856 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:02,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879134859] [2021-01-06 17:50:02,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:02,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:50:02,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477022243] [2021-01-06 17:50:02,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:50:02,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:02,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:50:02,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:50:02,858 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 10 states. [2021-01-06 17:50:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:02,935 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2021-01-06 17:50:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:50:02,936 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2021-01-06 17:50:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:02,937 INFO L225 Difference]: With dead ends: 141 [2021-01-06 17:50:02,937 INFO L226 Difference]: Without dead ends: 131 [2021-01-06 17:50:02,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:50:02,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-01-06 17:50:02,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2021-01-06 17:50:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-01-06 17:50:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2021-01-06 17:50:02,951 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 52 [2021-01-06 17:50:02,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:02,951 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2021-01-06 17:50:02,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:50:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2021-01-06 17:50:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 17:50:02,952 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:02,952 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:03,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-06 17:50:03,167 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:03,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1005826959, now seen corresponding path program 5 times [2021-01-06 17:50:03,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:03,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805349821] [2021-01-06 17:50:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:03,179 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:03,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630030017] [2021-01-06 17:50:03,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:03,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-06 17:50:03,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:03,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:50:03,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:03,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805349821] [2021-01-06 17:50:03,358 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:03,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630030017] [2021-01-06 17:50:03,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:03,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:50:03,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428832659] [2021-01-06 17:50:03,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:50:03,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:03,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:50:03,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:50:03,361 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand 10 states. [2021-01-06 17:50:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:03,465 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2021-01-06 17:50:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:50:03,465 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2021-01-06 17:50:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:03,467 INFO L225 Difference]: With dead ends: 140 [2021-01-06 17:50:03,467 INFO L226 Difference]: Without dead ends: 132 [2021-01-06 17:50:03,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:50:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-01-06 17:50:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-01-06 17:50:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-06 17:50:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2021-01-06 17:50:03,482 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 59 [2021-01-06 17:50:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:03,482 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2021-01-06 17:50:03,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:50:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2021-01-06 17:50:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 17:50:03,483 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:03,483 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:03,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:03,697 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:03,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1674511849, now seen corresponding path program 5 times [2021-01-06 17:50:03,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:03,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678873050] [2021-01-06 17:50:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:03,709 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:03,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660840752] [2021-01-06 17:50:03,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:03,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-06 17:50:03,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:03,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:50:03,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:03,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678873050] [2021-01-06 17:50:03,980 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:03,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660840752] [2021-01-06 17:50:03,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:03,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:50:03,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809413054] [2021-01-06 17:50:03,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:50:03,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:03,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:50:03,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:03,982 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 11 states. [2021-01-06 17:50:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:04,080 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2021-01-06 17:50:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:50:04,080 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2021-01-06 17:50:04,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:04,081 INFO L225 Difference]: With dead ends: 163 [2021-01-06 17:50:04,081 INFO L226 Difference]: Without dead ends: 153 [2021-01-06 17:50:04,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:50:04,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-01-06 17:50:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-01-06 17:50:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-01-06 17:50:04,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2021-01-06 17:50:04,096 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 59 [2021-01-06 17:50:04,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:04,096 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2021-01-06 17:50:04,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:50:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2021-01-06 17:50:04,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 17:50:04,097 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:04,097 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:04,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 17:50:04,311 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:04,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:04,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1527902860, now seen corresponding path program 6 times [2021-01-06 17:50:04,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:04,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393447442] [2021-01-06 17:50:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:04,320 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:04,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49740636] [2021-01-06 17:50:04,320 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:04,427 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-06 17:50:04,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:04,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:50:04,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:04,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393447442] [2021-01-06 17:50:04,567 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:04,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49740636] [2021-01-06 17:50:04,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:04,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:50:04,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191724119] [2021-01-06 17:50:04,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:50:04,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:04,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:50:04,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:50:04,568 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 12 states. [2021-01-06 17:50:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:04,682 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2021-01-06 17:50:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 17:50:04,683 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2021-01-06 17:50:04,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:04,684 INFO L225 Difference]: With dead ends: 187 [2021-01-06 17:50:04,684 INFO L226 Difference]: Without dead ends: 175 [2021-01-06 17:50:04,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:50:04,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-01-06 17:50:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-01-06 17:50:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2021-01-06 17:50:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2021-01-06 17:50:04,702 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 66 [2021-01-06 17:50:04,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:04,703 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2021-01-06 17:50:04,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:50:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2021-01-06 17:50:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 17:50:04,704 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:04,704 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:04,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-06 17:50:04,918 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:04,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:04,919 INFO L82 PathProgramCache]: Analyzing trace with hash -817031031, now seen corresponding path program 7 times [2021-01-06 17:50:04,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:04,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572709365] [2021-01-06 17:50:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:04,927 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:04,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616107405] [2021-01-06 17:50:04,928 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:05,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:50:05,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:05,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572709365] [2021-01-06 17:50:05,195 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:05,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616107405] [2021-01-06 17:50:05,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:05,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:50:05,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211470685] [2021-01-06 17:50:05,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:50:05,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:05,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:50:05,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:50:05,197 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand 13 states. [2021-01-06 17:50:05,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:05,344 INFO L93 Difference]: Finished difference Result 209 states and 234 transitions. [2021-01-06 17:50:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 17:50:05,345 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2021-01-06 17:50:05,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:05,346 INFO L225 Difference]: With dead ends: 209 [2021-01-06 17:50:05,347 INFO L226 Difference]: Without dead ends: 197 [2021-01-06 17:50:05,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:50:05,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-01-06 17:50:05,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-01-06 17:50:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-01-06 17:50:05,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 219 transitions. [2021-01-06 17:50:05,366 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 219 transitions. Word has length 73 [2021-01-06 17:50:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:05,366 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 219 transitions. [2021-01-06 17:50:05,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:50:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 219 transitions. [2021-01-06 17:50:05,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 17:50:05,367 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:05,367 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:05,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-06 17:50:05,583 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:05,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:05,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1740090348, now seen corresponding path program 8 times [2021-01-06 17:50:05,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:05,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207917805] [2021-01-06 17:50:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:05,593 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:05,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243380210] [2021-01-06 17:50:05,594 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:05,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:05,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:05,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:50:05,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 88 proven. 43 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-01-06 17:50:05,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207917805] [2021-01-06 17:50:05,757 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:05,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243380210] [2021-01-06 17:50:05,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:05,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:50:05,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408256304] [2021-01-06 17:50:05,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:50:05,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:05,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:50:05,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:50:05,758 INFO L87 Difference]: Start difference. First operand 196 states and 219 transitions. Second operand 5 states. [2021-01-06 17:50:05,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:05,815 INFO L93 Difference]: Finished difference Result 241 states and 269 transitions. [2021-01-06 17:50:05,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:50:05,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2021-01-06 17:50:05,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:05,817 INFO L225 Difference]: With dead ends: 241 [2021-01-06 17:50:05,817 INFO L226 Difference]: Without dead ends: 175 [2021-01-06 17:50:05,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:50:05,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-01-06 17:50:05,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-01-06 17:50:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2021-01-06 17:50:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2021-01-06 17:50:05,834 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 80 [2021-01-06 17:50:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:05,835 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2021-01-06 17:50:05,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:50:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2021-01-06 17:50:05,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-06 17:50:05,836 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:05,836 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:06,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:06,050 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:06,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:06,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1453108407, now seen corresponding path program 9 times [2021-01-06 17:50:06,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:06,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573657762] [2021-01-06 17:50:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:06,059 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:06,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699921017] [2021-01-06 17:50:06,060 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:06,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-06 17:50:06,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:06,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:50:06,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 65 proven. 87 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-06 17:50:06,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573657762] [2021-01-06 17:50:06,689 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:06,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699921017] [2021-01-06 17:50:06,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:06,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:50:06,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784631836] [2021-01-06 17:50:06,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:50:06,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:06,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:50:06,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:50:06,691 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand 13 states. [2021-01-06 17:50:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:07,015 INFO L93 Difference]: Finished difference Result 252 states and 282 transitions. [2021-01-06 17:50:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:50:07,015 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2021-01-06 17:50:07,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:07,016 INFO L225 Difference]: With dead ends: 252 [2021-01-06 17:50:07,016 INFO L226 Difference]: Without dead ends: 161 [2021-01-06 17:50:07,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:50:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-01-06 17:50:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-01-06 17:50:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2021-01-06 17:50:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 178 transitions. [2021-01-06 17:50:07,034 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 178 transitions. Word has length 81 [2021-01-06 17:50:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:07,034 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 178 transitions. [2021-01-06 17:50:07,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:50:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 178 transitions. [2021-01-06 17:50:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-06 17:50:07,035 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:07,035 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:07,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-06 17:50:07,238 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:07,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:07,238 INFO L82 PathProgramCache]: Analyzing trace with hash -861698128, now seen corresponding path program 10 times [2021-01-06 17:50:07,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:07,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873996050] [2021-01-06 17:50:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:07,247 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:07,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11976014] [2021-01-06 17:50:07,248 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:07,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:50:07,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:07,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:50:07,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 14 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:07,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873996050] [2021-01-06 17:50:07,979 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:07,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11976014] [2021-01-06 17:50:07,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:07,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:50:07,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696965146] [2021-01-06 17:50:07,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:50:07,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:07,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:50:07,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:50:07,980 INFO L87 Difference]: Start difference. First operand 161 states and 178 transitions. Second operand 7 states. [2021-01-06 17:50:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:08,098 INFO L93 Difference]: Finished difference Result 232 states and 257 transitions. [2021-01-06 17:50:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:50:08,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2021-01-06 17:50:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:08,100 INFO L225 Difference]: With dead ends: 232 [2021-01-06 17:50:08,100 INFO L226 Difference]: Without dead ends: 147 [2021-01-06 17:50:08,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:50:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-01-06 17:50:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-01-06 17:50:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2021-01-06 17:50:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2021-01-06 17:50:08,115 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 82 [2021-01-06 17:50:08,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:08,115 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 161 transitions. [2021-01-06 17:50:08,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:50:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 161 transitions. [2021-01-06 17:50:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 17:50:08,116 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:08,117 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:08,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:08,322 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:08,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:08,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1395374203, now seen corresponding path program 6 times [2021-01-06 17:50:08,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:08,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426960944] [2021-01-06 17:50:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:08,331 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:08,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790531989] [2021-01-06 17:50:08,331 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:08,421 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-06 17:50:08,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:08,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:50:08,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:08,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426960944] [2021-01-06 17:50:08,608 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:08,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790531989] [2021-01-06 17:50:08,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:08,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:50:08,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954627266] [2021-01-06 17:50:08,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:50:08,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:08,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:50:08,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:50:08,610 INFO L87 Difference]: Start difference. First operand 147 states and 161 transitions. Second operand 13 states. [2021-01-06 17:50:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:08,799 INFO L93 Difference]: Finished difference Result 157 states and 171 transitions. [2021-01-06 17:50:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-06 17:50:08,800 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2021-01-06 17:50:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:08,801 INFO L225 Difference]: With dead ends: 157 [2021-01-06 17:50:08,801 INFO L226 Difference]: Without dead ends: 149 [2021-01-06 17:50:08,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:50:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-01-06 17:50:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-01-06 17:50:08,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2021-01-06 17:50:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2021-01-06 17:50:08,818 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 83 [2021-01-06 17:50:08,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:08,818 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2021-01-06 17:50:08,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:50:08,818 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2021-01-06 17:50:08,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 17:50:08,819 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:08,820 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:09,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-06 17:50:09,035 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:09,036 INFO L82 PathProgramCache]: Analyzing trace with hash -219254285, now seen corresponding path program 11 times [2021-01-06 17:50:09,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:09,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747427637] [2021-01-06 17:50:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:09,044 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:09,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607385113] [2021-01-06 17:50:09,044 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:10,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-06 17:50:10,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-01-06 17:50:10,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:50:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:50:10,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:50:10,515 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 17:50:10,515 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:50:10,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-06 17:50:10,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:50:10 BoogieIcfgContainer [2021-01-06 17:50:10,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:50:10,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:50:10,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:50:10,833 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:50:10,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:49:48" (3/4) ... [2021-01-06 17:50:10,836 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 17:50:10,944 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/hard2_unwindbound10.c-witness.graphml [2021-01-06 17:50:10,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:50:10,946 INFO L168 Benchmark]: Toolchain (without parser) took 23416.17 ms. Allocated memory was 153.1 MB in the beginning and 285.2 MB in the end (delta: 132.1 MB). Free memory was 129.3 MB in the beginning and 167.7 MB in the end (delta: -38.4 MB). Peak memory consumption was 94.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:10,946 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:50:10,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.75 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 119.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:10,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.66 ms. Allocated memory is still 153.1 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:10,948 INFO L168 Benchmark]: Boogie Preprocessor took 28.44 ms. Allocated memory is still 153.1 MB. Free memory was 117.4 MB in the beginning and 116.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:10,948 INFO L168 Benchmark]: RCFGBuilder took 569.67 ms. Allocated memory is still 153.1 MB. Free memory was 116.2 MB in the beginning and 100.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:10,949 INFO L168 Benchmark]: TraceAbstraction took 22372.07 ms. Allocated memory was 153.1 MB in the beginning and 285.2 MB in the end (delta: 132.1 MB). Free memory was 99.7 MB in the beginning and 173.5 MB in the end (delta: -73.8 MB). Peak memory consumption was 59.9 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:10,949 INFO L168 Benchmark]: Witness Printer took 111.71 ms. Allocated memory is still 285.2 MB. Free memory was 173.5 MB in the beginning and 167.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:10,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.75 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 119.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.66 ms. Allocated memory is still 153.1 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.44 ms. Allocated memory is still 153.1 MB. Free memory was 117.4 MB in the beginning and 116.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 569.67 ms. Allocated memory is still 153.1 MB. Free memory was 116.2 MB in the beginning and 100.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22372.07 ms. Allocated memory was 153.1 MB in the beginning and 285.2 MB in the end (delta: 132.1 MB). Free memory was 99.7 MB in the beginning and 173.5 MB in the end (delta: -73.8 MB). Peak memory consumption was 59.9 MB. Max. memory is 8.0 GB. * Witness Printer took 111.71 ms. Allocated memory is still 285.2 MB. Free memory was 173.5 MB in the beginning and 167.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=3] [L34] EXPR counter++ VAL [counter=4] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=4] [L34] EXPR counter++ VAL [counter=5] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=5] [L34] EXPR counter++ VAL [counter=6] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L38] COND TRUE !(r >= d) VAL [counter=6] [L44] EXPR counter++ VAL [counter=7] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=7] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=7] [L44] EXPR counter++ VAL [counter=8] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=8] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=8] [L44] EXPR counter++ VAL [counter=9] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=9] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=9] [L44] EXPR counter++ VAL [counter=10] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=10] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=10] [L44] EXPR counter++ VAL [counter=11] [L44] COND FALSE !(counter++<10) [L15] COND TRUE !(cond) VAL [counter=11] [L17] reach_error() VAL [counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.0s, OverallIterations: 34, TraceHistogramMax: 10, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 980 SDtfs, 1536 SDslu, 3555 SDs, 0 SdLazy, 2060 SolverSat, 528 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1372 GetRequests, 1086 SyntacticMatches, 1 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 33 MinimizatonAttempts, 195 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1404 NumberOfCodeBlocks, 1327 NumberOfCodeBlocksAsserted, 85 NumberOfCheckSat, 1288 ConstructedInterpolants, 0 QuantifiedInterpolants, 282245 SizeOfPredicates, 189 NumberOfNonLiveVariables, 5066 ConjunctsInSsa, 599 ConjunctsInUnsatCore, 33 InterpolantComputations, 6 PerfectInterpolantSequences, 326/1818 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...