/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/egcd2-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:33:08,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:33:08,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:33:08,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:33:08,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:33:08,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:33:08,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:33:08,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:33:08,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:33:08,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:33:08,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:33:08,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:33:08,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:33:08,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:33:08,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:33:08,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:33:08,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:33:08,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:33:08,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:33:08,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:33:08,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:33:08,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:33:08,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:33:08,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:33:08,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:33:08,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:33:08,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:33:08,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:33:08,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:33:08,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:33:08,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:33:08,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:33:08,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:33:08,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:33:08,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:33:08,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:33:08,581 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 17:33:08,635 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:33:08,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:33:08,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:33:08,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:33:08,639 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:33:08,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:33:08,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:33:08,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:33:08,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:33:08,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:33:08,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:33:08,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:33:08,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:33:08,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:33:08,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:33:08,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:33:08,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:33:08,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:33:08,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:33:08,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:33:08,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:33:08,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:33:08,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:33:08,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:33:08,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:33:08,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:33:09,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:33:09,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:33:09,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:33:09,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:33:09,033 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:33:09,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound5.c [2021-01-06 17:33:09,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5ac94b802/2c6e56085d844c2fbbe1e1941a0e74ae/FLAG5cabd8ce7 [2021-01-06 17:33:09,705 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:33:09,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound5.c [2021-01-06 17:33:09,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5ac94b802/2c6e56085d844c2fbbe1e1941a0e74ae/FLAG5cabd8ce7 [2021-01-06 17:33:10,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5ac94b802/2c6e56085d844c2fbbe1e1941a0e74ae [2021-01-06 17:33:10,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:33:10,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:33:10,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:33:10,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:33:10,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:33:10,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:33:10" (1/1) ... [2021-01-06 17:33:10,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a95b8f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10, skipping insertion in model container [2021-01-06 17:33:10,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:33:10" (1/1) ... [2021-01-06 17:33:10,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:33:10,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:33:10,381 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/egcd2-ll_valuebound5.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] 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[~temp~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[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:33:10,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:33:10,450 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:33:10,467 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/egcd2-ll_valuebound5.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] 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[~temp~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[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:33:10,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:33:10,529 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:33:10,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10 WrapperNode [2021-01-06 17:33:10,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:33:10,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:33:10,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:33:10,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:33:10,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10" (1/1) ... [2021-01-06 17:33:10,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10" (1/1) ... [2021-01-06 17:33:10,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:33:10,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:33:10,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:33:10,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:33:10,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10" (1/1) ... [2021-01-06 17:33:10,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10" (1/1) ... [2021-01-06 17:33:10,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10" (1/1) ... [2021-01-06 17:33:10,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10" (1/1) ... [2021-01-06 17:33:10,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10" (1/1) ... [2021-01-06 17:33:10,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10" (1/1) ... [2021-01-06 17:33:10,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10" (1/1) ... [2021-01-06 17:33:10,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:33:10,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:33:10,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:33:10,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:33:10,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10" (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 17:33:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:33:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:33:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:33:10,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:33:11,189 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:33:11,190 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-01-06 17:33:11,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:33:11 BoogieIcfgContainer [2021-01-06 17:33:11,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:33:11,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:33:11,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:33:11,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:33:11,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:33:10" (1/3) ... [2021-01-06 17:33:11,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b196f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:33:11, skipping insertion in model container [2021-01-06 17:33:11,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:10" (2/3) ... [2021-01-06 17:33:11,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b196f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:33:11, skipping insertion in model container [2021-01-06 17:33:11,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:33:11" (3/3) ... [2021-01-06 17:33:11,202 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound5.c [2021-01-06 17:33:11,209 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:33:11,214 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-01-06 17:33:11,238 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-06 17:33:11,267 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:33:11,267 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:33:11,267 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:33:11,267 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:33:11,267 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:33:11,268 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:33:11,268 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:33:11,268 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:33:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2021-01-06 17:33:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:33:11,295 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:11,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:11,297 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:11,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:11,303 INFO L82 PathProgramCache]: Analyzing trace with hash 823104699, now seen corresponding path program 1 times [2021-01-06 17:33:11,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:11,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362964102] [2021-01-06 17:33:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:11,484 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 17:33:11,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362964102] [2021-01-06 17:33:11,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:11,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:33:11,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192043198] [2021-01-06 17:33:11,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:33:11,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:11,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:33:11,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:33:11,511 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2021-01-06 17:33:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:11,535 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2021-01-06 17:33:11,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:33:11,536 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2021-01-06 17:33:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:11,546 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:33:11,546 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 17:33:11,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:33:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 17:33:11,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-01-06 17:33:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 17:33:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-01-06 17:33:11,591 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 17 [2021-01-06 17:33:11,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:11,591 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-01-06 17:33:11,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:33:11,592 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-01-06 17:33:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:33:11,593 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:11,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:11,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:33:11,594 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:11,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:11,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1122121916, now seen corresponding path program 1 times [2021-01-06 17:33:11,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:11,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548634028] [2021-01-06 17:33:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:11,627 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:11,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858919873] [2021-01-06 17:33:11,628 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 17:33:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:11,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:33:11,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:11,844 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 17:33:11,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548634028] [2021-01-06 17:33:11,844 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:11,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858919873] [2021-01-06 17:33:11,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:11,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:33:11,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508481855] [2021-01-06 17:33:11,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:33:11,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:11,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:33:11,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:33:11,849 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 5 states. [2021-01-06 17:33:11,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:11,958 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-01-06 17:33:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:33:11,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 17:33:11,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:11,960 INFO L225 Difference]: With dead ends: 69 [2021-01-06 17:33:11,960 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:33:11,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:33:11,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:33:11,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2021-01-06 17:33:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 17:33:11,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-01-06 17:33:11,971 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2021-01-06 17:33:11,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:11,972 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-01-06 17:33:11,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:33:11,972 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-01-06 17:33:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:33:11,973 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:11,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:12,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:33:12,188 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:12,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:12,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1122125890, now seen corresponding path program 1 times [2021-01-06 17:33:12,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:12,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366709958] [2021-01-06 17:33:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:12,209 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:12,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458140258] [2021-01-06 17:33:12,210 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 17:33:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:12,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:33:12,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:12,393 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 17:33:12,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366709958] [2021-01-06 17:33:12,394 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:12,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458140258] [2021-01-06 17:33:12,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:12,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:33:12,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078669466] [2021-01-06 17:33:12,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:33:12,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:12,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:33:12,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:33:12,397 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 8 states. [2021-01-06 17:33:12,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:12,641 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2021-01-06 17:33:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:33:12,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2021-01-06 17:33:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:12,643 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:33:12,643 INFO L226 Difference]: Without dead ends: 77 [2021-01-06 17:33:12,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:33:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-06 17:33:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2021-01-06 17:33:12,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 17:33:12,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-01-06 17:33:12,653 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 18 [2021-01-06 17:33:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:12,654 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-01-06 17:33:12,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:33:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-01-06 17:33:12,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:33:12,655 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:12,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:12,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:12,869 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:12,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:12,871 INFO L82 PathProgramCache]: Analyzing trace with hash 326346277, now seen corresponding path program 1 times [2021-01-06 17:33:12,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:12,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184522063] [2021-01-06 17:33:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:12,890 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:12,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966430065] [2021-01-06 17:33:12,891 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 17:33:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:12,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:33:12,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:13,160 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 17:33:13,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184522063] [2021-01-06 17:33:13,160 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:13,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966430065] [2021-01-06 17:33:13,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:13,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-06 17:33:13,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111173343] [2021-01-06 17:33:13,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:33:13,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:13,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:33:13,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:33:13,163 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 10 states. [2021-01-06 17:33:13,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:13,533 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-01-06 17:33:13,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:33:13,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2021-01-06 17:33:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:13,535 INFO L225 Difference]: With dead ends: 63 [2021-01-06 17:33:13,536 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:33:13,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:33:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:33:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-01-06 17:33:13,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 17:33:13,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-01-06 17:33:13,549 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 20 [2021-01-06 17:33:13,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:13,549 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-01-06 17:33:13,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:33:13,550 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-01-06 17:33:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:33:13,550 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:13,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:13,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:13,764 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:13,765 INFO L82 PathProgramCache]: Analyzing trace with hash 86317224, now seen corresponding path program 1 times [2021-01-06 17:33:13,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:13,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742442180] [2021-01-06 17:33:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:13,783 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:13,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560026241] [2021-01-06 17:33:13,783 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 17:33:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:13,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:33:13,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:13,972 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 17:33:13,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742442180] [2021-01-06 17:33:13,973 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:13,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560026241] [2021-01-06 17:33:13,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:13,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:33:13,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208728541] [2021-01-06 17:33:13,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:33:13,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:13,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:33:13,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:33:13,976 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 8 states. [2021-01-06 17:33:14,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:14,214 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-01-06 17:33:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:33:14,215 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2021-01-06 17:33:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:14,219 INFO L225 Difference]: With dead ends: 61 [2021-01-06 17:33:14,219 INFO L226 Difference]: Without dead ends: 59 [2021-01-06 17:33:14,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:33:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-06 17:33:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2021-01-06 17:33:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 17:33:14,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-01-06 17:33:14,241 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2021-01-06 17:33:14,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:14,241 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-01-06 17:33:14,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:33:14,241 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-01-06 17:33:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 17:33:14,243 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:14,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:14,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:14,457 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:14,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:14,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1346631627, now seen corresponding path program 1 times [2021-01-06 17:33:14,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:14,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28764133] [2021-01-06 17:33:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:14,475 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:14,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378026045] [2021-01-06 17:33:14,476 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 17:33:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:14,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 17:33:14,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:14,706 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 17:33:14,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28764133] [2021-01-06 17:33:14,707 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:14,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378026045] [2021-01-06 17:33:14,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:14,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 17:33:14,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469078691] [2021-01-06 17:33:14,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:33:14,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:14,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:33:14,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:33:14,710 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 7 states. [2021-01-06 17:33:16,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:16,973 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-01-06 17:33:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:33:16,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2021-01-06 17:33:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:16,975 INFO L225 Difference]: With dead ends: 63 [2021-01-06 17:33:16,975 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:33:16,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:33:16,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:33:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-01-06 17:33:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 17:33:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-01-06 17:33:16,996 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2021-01-06 17:33:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:16,997 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-01-06 17:33:16,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:33:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-01-06 17:33:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:33:17,001 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:17,001 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:17,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:33:17,205 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:17,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:17,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1781730828, now seen corresponding path program 1 times [2021-01-06 17:33:17,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:17,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971394722] [2021-01-06 17:33:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:17,222 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:17,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332203783] [2021-01-06 17:33:17,222 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 17:33:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:17,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:33:17,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:17,362 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 17:33:17,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971394722] [2021-01-06 17:33:17,362 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:17,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332203783] [2021-01-06 17:33:17,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:17,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:33:17,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927937355] [2021-01-06 17:33:17,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:33:17,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:17,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:33:17,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:33:17,365 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2021-01-06 17:33:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:17,559 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2021-01-06 17:33:17,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:33:17,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-01-06 17:33:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:17,561 INFO L225 Difference]: With dead ends: 104 [2021-01-06 17:33:17,561 INFO L226 Difference]: Without dead ends: 102 [2021-01-06 17:33:17,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:33:17,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-06 17:33:17,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2021-01-06 17:33:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:33:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-01-06 17:33:17,577 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 27 [2021-01-06 17:33:17,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:17,577 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-01-06 17:33:17,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:33:17,577 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-01-06 17:33:17,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 17:33:17,578 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:17,578 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:17,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:17,793 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:17,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:17,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1655367537, now seen corresponding path program 1 times [2021-01-06 17:33:17,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:17,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383646492] [2021-01-06 17:33:17,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:17,811 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:17,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662437287] [2021-01-06 17:33:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:17,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:33:17,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:17,945 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 17:33:17,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383646492] [2021-01-06 17:33:17,945 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:17,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662437287] [2021-01-06 17:33:17,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:17,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:33:17,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303552376] [2021-01-06 17:33:17,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:33:17,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:17,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:33:17,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:33:17,948 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 7 states. [2021-01-06 17:33:18,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:18,167 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2021-01-06 17:33:18,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:33:18,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2021-01-06 17:33:18,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:18,169 INFO L225 Difference]: With dead ends: 165 [2021-01-06 17:33:18,170 INFO L226 Difference]: Without dead ends: 157 [2021-01-06 17:33:18,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:33:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-01-06 17:33:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 109. [2021-01-06 17:33:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-01-06 17:33:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2021-01-06 17:33:18,191 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 30 [2021-01-06 17:33:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:18,191 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2021-01-06 17:33:18,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:33:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2021-01-06 17:33:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:33:18,192 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:18,193 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:18,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:18,408 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:18,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:18,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1674279834, now seen corresponding path program 1 times [2021-01-06 17:33:18,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:18,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154193078] [2021-01-06 17:33:18,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:18,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:18,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399303743] [2021-01-06 17:33:18,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:18,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:33:18,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:18,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154193078] [2021-01-06 17:33:18,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:18,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399303743] [2021-01-06 17:33:18,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:18,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:33:18,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340535629] [2021-01-06 17:33:18,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:33:18,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:18,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:33:18,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:33:18,671 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand 8 states. [2021-01-06 17:33:18,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:18,891 INFO L93 Difference]: Finished difference Result 176 states and 211 transitions. [2021-01-06 17:33:18,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:33:18,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-01-06 17:33:18,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:18,894 INFO L225 Difference]: With dead ends: 176 [2021-01-06 17:33:18,894 INFO L226 Difference]: Without dead ends: 170 [2021-01-06 17:33:18,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:33:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-01-06 17:33:18,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2021-01-06 17:33:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-06 17:33:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 194 transitions. [2021-01-06 17:33:18,921 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 194 transitions. Word has length 32 [2021-01-06 17:33:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:18,921 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 194 transitions. [2021-01-06 17:33:18,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:33:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 194 transitions. [2021-01-06 17:33:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:33:18,923 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:18,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:19,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:33:19,139 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:19,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:19,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1629657891, now seen corresponding path program 1 times [2021-01-06 17:33:19,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:19,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458641081] [2021-01-06 17:33:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:19,182 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:19,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798240085] [2021-01-06 17:33:19,182 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 17:33:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:19,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 63 conjunts are in the unsatisfiable core [2021-01-06 17:33:19,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:19,795 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 17:33:19,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458641081] [2021-01-06 17:33:19,795 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:19,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798240085] [2021-01-06 17:33:19,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:19,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-01-06 17:33:19,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555599707] [2021-01-06 17:33:19,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 17:33:19,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:19,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 17:33:19,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:33:19,798 INFO L87 Difference]: Start difference. First operand 157 states and 194 transitions. Second operand 16 states. [2021-01-06 17:33:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:20,574 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2021-01-06 17:33:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 17:33:20,575 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2021-01-06 17:33:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:20,576 INFO L225 Difference]: With dead ends: 167 [2021-01-06 17:33:20,576 INFO L226 Difference]: Without dead ends: 165 [2021-01-06 17:33:20,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2021-01-06 17:33:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-01-06 17:33:20,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-01-06 17:33:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-06 17:33:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 192 transitions. [2021-01-06 17:33:20,597 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 192 transitions. Word has length 34 [2021-01-06 17:33:20,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:20,598 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 192 transitions. [2021-01-06 17:33:20,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 17:33:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 192 transitions. [2021-01-06 17:33:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:33:20,599 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:20,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:20,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:20,813 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:20,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:20,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1561987776, now seen corresponding path program 1 times [2021-01-06 17:33:20,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:20,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304178600] [2021-01-06 17:33:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:20,840 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:20,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612582405] [2021-01-06 17:33:20,840 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 17:33:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:20,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 49 conjunts are in the unsatisfiable core [2021-01-06 17:33:20,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:21,339 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:33:21,366 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:33:21,376 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:33:21,412 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 17:33:21,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304178600] [2021-01-06 17:33:21,413 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:21,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612582405] [2021-01-06 17:33:21,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:21,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:33:21,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724763049] [2021-01-06 17:33:21,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:33:21,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:21,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:33:21,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:33:21,418 INFO L87 Difference]: Start difference. First operand 157 states and 192 transitions. Second operand 12 states. [2021-01-06 17:33:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:21,931 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2021-01-06 17:33:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:33:21,932 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2021-01-06 17:33:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:21,933 INFO L225 Difference]: With dead ends: 172 [2021-01-06 17:33:21,933 INFO L226 Difference]: Without dead ends: 170 [2021-01-06 17:33:21,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:33:21,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-01-06 17:33:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2021-01-06 17:33:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-06 17:33:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2021-01-06 17:33:21,953 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 36 [2021-01-06 17:33:21,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:21,953 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2021-01-06 17:33:21,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:33:21,954 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2021-01-06 17:33:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:33:21,954 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:21,955 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:22,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:22,170 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:22,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:22,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1088491650, now seen corresponding path program 2 times [2021-01-06 17:33:22,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:22,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531343455] [2021-01-06 17:33:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:22,190 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:22,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829278006] [2021-01-06 17:33:22,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:22,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:33:22,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:33:22,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 17:33:22,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:22,440 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 17:33:22,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531343455] [2021-01-06 17:33:22,441 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:22,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829278006] [2021-01-06 17:33:22,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:22,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:33:22,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336736295] [2021-01-06 17:33:22,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:33:22,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:22,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:33:22,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:33:22,443 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand 10 states. [2021-01-06 17:33:22,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:22,727 INFO L93 Difference]: Finished difference Result 264 states and 318 transitions. [2021-01-06 17:33:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:33:22,728 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2021-01-06 17:33:22,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:22,730 INFO L225 Difference]: With dead ends: 264 [2021-01-06 17:33:22,730 INFO L226 Difference]: Without dead ends: 262 [2021-01-06 17:33:22,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:33:22,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-01-06 17:33:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2021-01-06 17:33:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-01-06 17:33:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 248 transitions. [2021-01-06 17:33:22,765 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 248 transitions. Word has length 36 [2021-01-06 17:33:22,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:22,765 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 248 transitions. [2021-01-06 17:33:22,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:33:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 248 transitions. [2021-01-06 17:33:22,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 17:33:22,766 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:22,766 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:22,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:33:22,981 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:22,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:22,982 INFO L82 PathProgramCache]: Analyzing trace with hash -50686429, now seen corresponding path program 1 times [2021-01-06 17:33:22,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:22,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055757640] [2021-01-06 17:33:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:22,993 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:22,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612981233] [2021-01-06 17:33:22,994 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 17:33:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:23,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-06 17:33:23,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:23,457 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 17:33:23,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055757640] [2021-01-06 17:33:23,458 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:23,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612981233] [2021-01-06 17:33:23,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:23,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:33:23,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745750437] [2021-01-06 17:33:23,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:33:23,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:23,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:33:23,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:33:23,463 INFO L87 Difference]: Start difference. First operand 202 states and 248 transitions. Second operand 13 states. [2021-01-06 17:33:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:24,131 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2021-01-06 17:33:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:33:24,132 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2021-01-06 17:33:24,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:24,134 INFO L225 Difference]: With dead ends: 247 [2021-01-06 17:33:24,134 INFO L226 Difference]: Without dead ends: 241 [2021-01-06 17:33:24,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:33:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-01-06 17:33:24,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 234. [2021-01-06 17:33:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-01-06 17:33:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2021-01-06 17:33:24,168 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 39 [2021-01-06 17:33:24,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:24,169 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2021-01-06 17:33:24,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:33:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2021-01-06 17:33:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:33:24,170 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:24,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:24,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:33:24,385 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:24,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:24,386 INFO L82 PathProgramCache]: Analyzing trace with hash -269629041, now seen corresponding path program 2 times [2021-01-06 17:33:24,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:24,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391631679] [2021-01-06 17:33:24,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:24,414 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:24,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779250500] [2021-01-06 17:33:24,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:24,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:33:24,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:33:24,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:33:24,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:24,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391631679] [2021-01-06 17:33:24,552 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:24,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779250500] [2021-01-06 17:33:24,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:24,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:33:24,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830911695] [2021-01-06 17:33:24,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:33:24,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:24,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:33:24,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:33:24,554 INFO L87 Difference]: Start difference. First operand 234 states and 287 transitions. Second operand 5 states. [2021-01-06 17:33:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:24,677 INFO L93 Difference]: Finished difference Result 302 states and 365 transitions. [2021-01-06 17:33:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:33:24,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-01-06 17:33:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:24,679 INFO L225 Difference]: With dead ends: 302 [2021-01-06 17:33:24,680 INFO L226 Difference]: Without dead ends: 210 [2021-01-06 17:33:24,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:33:24,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-01-06 17:33:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 190. [2021-01-06 17:33:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2021-01-06 17:33:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 221 transitions. [2021-01-06 17:33:24,710 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 221 transitions. Word has length 44 [2021-01-06 17:33:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:24,711 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 221 transitions. [2021-01-06 17:33:24,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:33:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 221 transitions. [2021-01-06 17:33:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:33:24,711 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:24,712 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:24,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:33:24,925 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:24,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:24,926 INFO L82 PathProgramCache]: Analyzing trace with hash 75787250, now seen corresponding path program 1 times [2021-01-06 17:33:24,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:24,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979360041] [2021-01-06 17:33:24,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:24,937 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:24,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158409202] [2021-01-06 17:33:24,938 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 17:33:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:25,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 84 conjunts are in the unsatisfiable core [2021-01-06 17:33:25,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:25,800 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:33:25,803 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:33:25,847 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 17:33:25,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979360041] [2021-01-06 17:33:25,847 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:25,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158409202] [2021-01-06 17:33:25,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:25,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:33:25,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057721288] [2021-01-06 17:33:25,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:33:25,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:25,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:33:25,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:33:25,850 INFO L87 Difference]: Start difference. First operand 190 states and 221 transitions. Second operand 15 states. [2021-01-06 17:33:28,336 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-01-06 17:33:31,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:31,060 INFO L93 Difference]: Finished difference Result 194 states and 223 transitions. [2021-01-06 17:33:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:33:31,061 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2021-01-06 17:33:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:31,063 INFO L225 Difference]: With dead ends: 194 [2021-01-06 17:33:31,063 INFO L226 Difference]: Without dead ends: 192 [2021-01-06 17:33:31,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:33:31,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-01-06 17:33:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2021-01-06 17:33:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2021-01-06 17:33:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 220 transitions. [2021-01-06 17:33:31,090 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 220 transitions. Word has length 45 [2021-01-06 17:33:31,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:31,091 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 220 transitions. [2021-01-06 17:33:31,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:33:31,091 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 220 transitions. [2021-01-06 17:33:31,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:33:31,092 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:31,092 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:31,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:31,306 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:31,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:31,307 INFO L82 PathProgramCache]: Analyzing trace with hash -397708876, now seen corresponding path program 3 times [2021-01-06 17:33:31,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:31,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447414260] [2021-01-06 17:33:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:31,318 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:31,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704622423] [2021-01-06 17:33:31,318 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 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 17:33:31,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:33:31,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:33:31,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:33:31,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-06 17:33:31,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447414260] [2021-01-06 17:33:31,465 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:31,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704622423] [2021-01-06 17:33:31,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:31,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:33:31,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813245148] [2021-01-06 17:33:31,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:33:31,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:31,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:33:31,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:33:31,467 INFO L87 Difference]: Start difference. First operand 190 states and 220 transitions. Second operand 5 states. [2021-01-06 17:33:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:31,565 INFO L93 Difference]: Finished difference Result 190 states and 220 transitions. [2021-01-06 17:33:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:33:31,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2021-01-06 17:33:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:31,567 INFO L225 Difference]: With dead ends: 190 [2021-01-06 17:33:31,567 INFO L226 Difference]: Without dead ends: 188 [2021-01-06 17:33:31,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:33:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-01-06 17:33:31,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 142. [2021-01-06 17:33:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-01-06 17:33:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-01-06 17:33:31,589 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 45 [2021-01-06 17:33:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:31,589 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-01-06 17:33:31,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:33:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-01-06 17:33:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 17:33:31,590 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:31,590 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:31,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:33:31,798 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:31,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:31,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1367297969, now seen corresponding path program 2 times [2021-01-06 17:33:31,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:31,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927588835] [2021-01-06 17:33:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:31,809 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:31,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018114429] [2021-01-06 17:33:31,809 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 17:33:31,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:33:31,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:33:31,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 55 conjunts are in the unsatisfiable core [2021-01-06 17:33:31,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:32,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927588835] [2021-01-06 17:33:32,247 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:32,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018114429] [2021-01-06 17:33:32,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:32,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:33:32,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147918742] [2021-01-06 17:33:32,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:33:32,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:32,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:33:32,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:33:32,249 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand 13 states. [2021-01-06 17:33:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:49,362 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2021-01-06 17:33:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:33:49,363 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2021-01-06 17:33:49,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:49,364 INFO L225 Difference]: With dead ends: 181 [2021-01-06 17:33:49,364 INFO L226 Difference]: Without dead ends: 175 [2021-01-06 17:33:49,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:33:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-01-06 17:33:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 162. [2021-01-06 17:33:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-01-06 17:33:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2021-01-06 17:33:49,389 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 48 [2021-01-06 17:33:49,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:49,389 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2021-01-06 17:33:49,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:33:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2021-01-06 17:33:49,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 17:33:49,390 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:49,390 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:49,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:33:49,604 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:49,605 INFO L82 PathProgramCache]: Analyzing trace with hash 194484878, now seen corresponding path program 3 times [2021-01-06 17:33:49,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:49,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823014368] [2021-01-06 17:33:49,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:49,617 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:49,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710675792] [2021-01-06 17:33:49,617 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 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