/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:49:48,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:49:48,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:49:48,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:49:48,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:49:48,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:49:48,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:49:48,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:49:48,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:49:48,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:49:48,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:49:48,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:49:48,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:49:48,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:49:48,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:49:48,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:49:48,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:49:48,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:49:48,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:49:48,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:49:48,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:49:48,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:49:48,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:49:48,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:49:48,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:49:48,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:49:48,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:49:48,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:49:48,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:49:48,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:49:48,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:49:48,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:49:48,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:49:48,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:49:48,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:49:48,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:49:48,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:49:48,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:49:48,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:49:48,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:49:48,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:49:48,620 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:49:48,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:49:48,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:49:48,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:49:48,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:49:48,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:49:48,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:49:48,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:49:48,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:49:48,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:49:48,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:49:48,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:49:48,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:49:48,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:49:48,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:49:48,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:49:48,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:49:48,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:49:48,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:49:48,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:49:48,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:49:48,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:49:49,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:49:49,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:49:49,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:49:49,061 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:49:49,064 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:49:49,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c [2021-01-06 17:49:49,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f0b5d0d37/3c782747e25a44f7883933d2d4db8733/FLAG8b91afd5d [2021-01-06 17:49:49,758 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:49:49,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c [2021-01-06 17:49:49,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f0b5d0d37/3c782747e25a44f7883933d2d4db8733/FLAG8b91afd5d [2021-01-06 17:49:50,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f0b5d0d37/3c782747e25a44f7883933d2d4db8733 [2021-01-06 17:49:50,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:49:50,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:49:50,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:49:50,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:49:50,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:49:50,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:49:50" (1/1) ... [2021-01-06 17:49:50,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe99d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50, skipping insertion in model container [2021-01-06 17:49:50,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:49:50" (1/1) ... [2021-01-06 17:49:50,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:49:50,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:49:50,323 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:49:50,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:49:50,356 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:49:50,371 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:49:50,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:49:50,396 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:49:50,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50 WrapperNode [2021-01-06 17:49:50,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:49:50,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:49:50,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:49:50,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:49:50,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50" (1/1) ... [2021-01-06 17:49:50,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50" (1/1) ... [2021-01-06 17:49:50,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:49:50,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:49:50,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:49:50,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:49:50,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50" (1/1) ... [2021-01-06 17:49:50,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50" (1/1) ... [2021-01-06 17:49:50,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50" (1/1) ... [2021-01-06 17:49:50,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50" (1/1) ... [2021-01-06 17:49:50,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50" (1/1) ... [2021-01-06 17:49:50,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50" (1/1) ... [2021-01-06 17:49:50,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50" (1/1) ... [2021-01-06 17:49:50,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:49:50,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:49:50,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:49:50,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:49:50,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:49:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:49:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:49:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:49:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:49:51,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:49:51,067 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-01-06 17:49:51,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:49:51 BoogieIcfgContainer [2021-01-06 17:49:51,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:49:51,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:49:51,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:49:51,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:49:51,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:49:50" (1/3) ... [2021-01-06 17:49:51,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303f7138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:49:51, skipping insertion in model container [2021-01-06 17:49:51,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:49:50" (2/3) ... [2021-01-06 17:49:51,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303f7138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:49:51, skipping insertion in model container [2021-01-06 17:49:51,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:49:51" (3/3) ... [2021-01-06 17:49:51,092 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound20.c [2021-01-06 17:49:51,109 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:49:51,120 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:49:51,159 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:49:51,203 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:49:51,203 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:49:51,203 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:49:51,203 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:49:51,205 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:49:51,206 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:49:51,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:49:51,206 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:49:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-01-06 17:49:51,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:49:51,242 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:51,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:49:51,244 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:51,254 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 17:49:51,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:51,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860440404] [2021-01-06 17:49:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:51,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860440404] [2021-01-06 17:49:51,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:51,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:49:51,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106267321] [2021-01-06 17:49:51,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:49:51,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:51,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:49:51,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:49:51,575 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2021-01-06 17:49:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:51,725 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2021-01-06 17:49:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:49:51,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-06 17:49:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:51,737 INFO L225 Difference]: With dead ends: 102 [2021-01-06 17:49:51,737 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 17:49:51,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:49:51,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 17:49:51,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2021-01-06 17:49:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 17:49:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-01-06 17:49:51,781 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2021-01-06 17:49:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:51,781 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-01-06 17:49:51,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:49:51,782 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-01-06 17:49:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:49:51,782 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:51,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:51,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:49:51,783 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:51,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2021-01-06 17:49:51,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:51,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898699822] [2021-01-06 17:49:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:51,800 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:51,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420877477] [2021-01-06 17:49:51,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:51,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:49:51,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:51,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898699822] [2021-01-06 17:49:51,948 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:51,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420877477] [2021-01-06 17:49:51,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:51,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:49:51,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281476230] [2021-01-06 17:49:51,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:49:51,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:51,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:49:51,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:49:51,958 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2021-01-06 17:49:51,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:51,984 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2021-01-06 17:49:51,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:49:51,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-06 17:49:51,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:51,988 INFO L225 Difference]: With dead ends: 54 [2021-01-06 17:49:51,988 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 17:49:51,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:49:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 17:49:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-01-06 17:49:51,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:49:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-01-06 17:49:51,998 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-01-06 17:49:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:51,998 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-01-06 17:49:51,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:49:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-01-06 17:49:51,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:49:51,999 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:51,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:52,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:49:52,214 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:52,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:52,216 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-01-06 17:49:52,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:52,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335040539] [2021-01-06 17:49:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:52,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335040539] [2021-01-06 17:49:52,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:52,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:49:52,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730932421] [2021-01-06 17:49:52,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:49:52,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:52,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:49:52,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:49:52,289 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2021-01-06 17:49:52,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:52,388 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-01-06 17:49:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:49:52,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-06 17:49:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:52,391 INFO L225 Difference]: With dead ends: 54 [2021-01-06 17:49:52,391 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:49:52,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:49:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:49:52,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-01-06 17:49:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 17:49:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-01-06 17:49:52,401 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2021-01-06 17:49:52,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:52,402 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-01-06 17:49:52,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:49:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-01-06 17:49:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:49:52,403 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:52,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:52,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:49:52,404 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:52,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-01-06 17:49:52,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:52,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942143771] [2021-01-06 17:49:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:52,422 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:52,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074546061] [2021-01-06 17:49:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:52,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:49:52,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:52,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942143771] [2021-01-06 17:49:52,653 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:52,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074546061] [2021-01-06 17:49:52,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:52,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:49:52,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697071671] [2021-01-06 17:49:52,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:49:52,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:52,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:49:52,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:52,656 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2021-01-06 17:49:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:52,823 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2021-01-06 17:49:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:49:52,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:49:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:52,825 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:49:52,825 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 17:49:52,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:49:52,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 17:49:52,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2021-01-06 17:49:52,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-06 17:49:52,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-01-06 17:49:52,838 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2021-01-06 17:49:52,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:52,838 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-01-06 17:49:52,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:49:52,838 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-01-06 17:49:52,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:49:52,839 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:52,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:53,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:53,055 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:53,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:53,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2021-01-06 17:49:53,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:53,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628471455] [2021-01-06 17:49:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:53,079 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:53,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957300310] [2021-01-06 17:49:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:53,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:49:53,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:53,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628471455] [2021-01-06 17:49:53,286 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:53,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957300310] [2021-01-06 17:49:53,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:53,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:49:53,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306213532] [2021-01-06 17:49:53,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:49:53,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:53,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:49:53,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:49:53,297 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2021-01-06 17:49:53,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:53,438 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2021-01-06 17:49:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:49:53,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:49:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:53,447 INFO L225 Difference]: With dead ends: 66 [2021-01-06 17:49:53,448 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 17:49:53,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:49:53,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 17:49:53,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2021-01-06 17:49:53,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 17:49:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2021-01-06 17:49:53,471 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2021-01-06 17:49:53,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:53,471 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2021-01-06 17:49:53,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:49:53,472 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2021-01-06 17:49:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:49:53,480 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:53,480 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:53,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:53,682 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:53,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:53,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2021-01-06 17:49:53,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:53,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943930733] [2021-01-06 17:49:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:53,699 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:53,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751087343] [2021-01-06 17:49:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:53,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:49:53,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:53,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943930733] [2021-01-06 17:49:53,836 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:53,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751087343] [2021-01-06 17:49:53,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:53,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:49:53,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622256219] [2021-01-06 17:49:53,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:49:53,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:53,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:49:53,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:49:53,838 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2021-01-06 17:49:53,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:53,878 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2021-01-06 17:49:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:49:53,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 17:49:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:53,880 INFO L225 Difference]: With dead ends: 78 [2021-01-06 17:49:53,880 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:49:53,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:53,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:49:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-01-06 17:49:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 17:49:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-01-06 17:49:53,889 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2021-01-06 17:49:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:53,889 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-01-06 17:49:53,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:49:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-01-06 17:49:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:49:53,890 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:53,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:54,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:54,098 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:54,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:54,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2021-01-06 17:49:54,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:54,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846708041] [2021-01-06 17:49:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:54,114 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:54,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438071783] [2021-01-06 17:49:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:54,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:49:54,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:54,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846708041] [2021-01-06 17:49:54,336 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:54,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438071783] [2021-01-06 17:49:54,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:54,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:49:54,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046294707] [2021-01-06 17:49:54,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:49:54,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:54,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:49:54,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:49:54,339 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2021-01-06 17:49:54,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:54,621 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2021-01-06 17:49:54,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:49:54,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 17:49:54,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:54,625 INFO L225 Difference]: With dead ends: 117 [2021-01-06 17:49:54,625 INFO L226 Difference]: Without dead ends: 77 [2021-01-06 17:49:54,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:49:54,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-06 17:49:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2021-01-06 17:49:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:49:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-01-06 17:49:54,655 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 18 [2021-01-06 17:49:54,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:54,656 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-01-06 17:49:54,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:49:54,657 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-01-06 17:49:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:49:54,658 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:54,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:54,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:49:54,860 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:54,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:54,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2021-01-06 17:49:54,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:54,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901718218] [2021-01-06 17:49:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:54,876 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:54,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866906694] [2021-01-06 17:49:54,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:54,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:49:54,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:55,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901718218] [2021-01-06 17:49:55,023 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:55,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866906694] [2021-01-06 17:49:55,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:55,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:49:55,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133705944] [2021-01-06 17:49:55,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:49:55,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:55,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:49:55,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:55,026 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 6 states. [2021-01-06 17:49:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:55,051 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2021-01-06 17:49:55,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:49:55,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-01-06 17:49:55,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:55,052 INFO L225 Difference]: With dead ends: 70 [2021-01-06 17:49:55,053 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 17:49:55,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 17:49:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2021-01-06 17:49:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:49:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2021-01-06 17:49:55,061 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2021-01-06 17:49:55,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:55,061 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2021-01-06 17:49:55,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:49:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2021-01-06 17:49:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:49:55,063 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:55,063 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:55,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:55,279 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:55,282 INFO L82 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2021-01-06 17:49:55,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:55,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454021996] [2021-01-06 17:49:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:55,310 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:55,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315566278] [2021-01-06 17:49:55,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:55,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:49:55,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:55,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:49:55,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:55,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-06 17:49:55,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454021996] [2021-01-06 17:49:55,421 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:55,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315566278] [2021-01-06 17:49:55,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:49:55,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:49:55,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032135674] [2021-01-06 17:49:55,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:49:55,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:55,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:49:55,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:49:55,423 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 5 states. [2021-01-06 17:49:55,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:55,468 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2021-01-06 17:49:55,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:49:55,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-01-06 17:49:55,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:55,469 INFO L225 Difference]: With dead ends: 99 [2021-01-06 17:49:55,469 INFO L226 Difference]: Without dead ends: 71 [2021-01-06 17:49:55,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:55,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-01-06 17:49:55,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2021-01-06 17:49:55,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-06 17:49:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2021-01-06 17:49:55,478 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 26 [2021-01-06 17:49:55,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:55,478 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2021-01-06 17:49:55,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:49:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2021-01-06 17:49:55,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:49:55,479 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:55,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-01-06 17:49:55,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:55,694 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:55,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:55,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2021-01-06 17:49:55,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:55,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609003942] [2021-01-06 17:49:55,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:55,707 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:55,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218367661] [2021-01-06 17:49:55,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:55,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:49:55,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:55,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:49:55,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:55,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609003942] [2021-01-06 17:49:55,896 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:55,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218367661] [2021-01-06 17:49:55,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:55,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:49:55,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890220591] [2021-01-06 17:49:55,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:49:55,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:55,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:49:55,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:55,899 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 8 states. [2021-01-06 17:49:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:56,111 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2021-01-06 17:49:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:49:56,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2021-01-06 17:49:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:56,113 INFO L225 Difference]: With dead ends: 138 [2021-01-06 17:49:56,113 INFO L226 Difference]: Without dead ends: 124 [2021-01-06 17:49:56,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:49:56,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-01-06 17:49:56,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2021-01-06 17:49:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 17:49:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2021-01-06 17:49:56,124 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 26 [2021-01-06 17:49:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:56,125 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2021-01-06 17:49:56,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:49:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2021-01-06 17:49:56,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:49:56,126 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:56,126 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:56,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:49:56,341 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:56,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:56,343 INFO L82 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2021-01-06 17:49:56,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:56,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675267470] [2021-01-06 17:49:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:56,355 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:56,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8886133] [2021-01-06 17:49:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:56,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:49:56,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:56,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675267470] [2021-01-06 17:49:56,509 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:56,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8886133] [2021-01-06 17:49:56,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:56,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:49:56,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392767888] [2021-01-06 17:49:56,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:49:56,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:56,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:49:56,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:49:56,517 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 6 states. [2021-01-06 17:49:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:56,561 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2021-01-06 17:49:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:49:56,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-01-06 17:49:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:56,563 INFO L225 Difference]: With dead ends: 100 [2021-01-06 17:49:56,563 INFO L226 Difference]: Without dead ends: 92 [2021-01-06 17:49:56,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:56,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-06 17:49:56,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-01-06 17:49:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 17:49:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2021-01-06 17:49:56,578 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 27 [2021-01-06 17:49:56,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:56,578 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2021-01-06 17:49:56,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:49:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2021-01-06 17:49:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:49:56,583 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:56,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:56,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:56,798 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:56,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:56,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2021-01-06 17:49:56,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:56,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379103376] [2021-01-06 17:49:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:56,810 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:56,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066888260] [2021-01-06 17:49:56,811 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:56,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:49:56,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:57,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379103376] [2021-01-06 17:49:57,018 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:57,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066888260] [2021-01-06 17:49:57,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:57,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:49:57,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651613561] [2021-01-06 17:49:57,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:49:57,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:57,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:49:57,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:49:57,024 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 7 states. [2021-01-06 17:49:57,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:57,176 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2021-01-06 17:49:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:49:57,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2021-01-06 17:49:57,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:57,177 INFO L225 Difference]: With dead ends: 114 [2021-01-06 17:49:57,177 INFO L226 Difference]: Without dead ends: 112 [2021-01-06 17:49:57,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:49:57,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-01-06 17:49:57,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2021-01-06 17:49:57,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-01-06 17:49:57,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2021-01-06 17:49:57,190 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 29 [2021-01-06 17:49:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:57,190 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2021-01-06 17:49:57,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:49:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2021-01-06 17:49:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 17:49:57,196 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:57,196 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:57,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:57,410 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:57,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:57,412 INFO L82 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2021-01-06 17:49:57,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:57,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17902308] [2021-01-06 17:49:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:57,424 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:57,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648401752] [2021-01-06 17:49:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:57,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:49:57,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:57,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17902308] [2021-01-06 17:49:57,570 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:57,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648401752] [2021-01-06 17:49:57,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:57,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:49:57,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622522783] [2021-01-06 17:49:57,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:49:57,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:57,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:49:57,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:49:57,573 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 7 states. [2021-01-06 17:49:57,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:57,608 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2021-01-06 17:49:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:49:57,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2021-01-06 17:49:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:57,612 INFO L225 Difference]: With dead ends: 112 [2021-01-06 17:49:57,612 INFO L226 Difference]: Without dead ends: 102 [2021-01-06 17:49:57,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-06 17:49:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-01-06 17:49:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-01-06 17:49:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2021-01-06 17:49:57,639 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 30 [2021-01-06 17:49:57,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:57,640 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2021-01-06 17:49:57,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:49:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2021-01-06 17:49:57,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:49:57,643 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:57,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:57,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:49:57,859 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:57,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:57,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1412607120, now seen corresponding path program 1 times [2021-01-06 17:49:57,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:57,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155915749] [2021-01-06 17:49:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:57,872 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:57,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770157070] [2021-01-06 17:49:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:57,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:49:57,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:58,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155915749] [2021-01-06 17:49:58,066 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:58,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770157070] [2021-01-06 17:49:58,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:58,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:49:58,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737347624] [2021-01-06 17:49:58,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:49:58,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:58,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:49:58,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:58,068 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand 8 states. [2021-01-06 17:49:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:58,235 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2021-01-06 17:49:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:49:58,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:49:58,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:58,237 INFO L225 Difference]: With dead ends: 130 [2021-01-06 17:49:58,237 INFO L226 Difference]: Without dead ends: 102 [2021-01-06 17:49:58,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:49:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-06 17:49:58,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2021-01-06 17:49:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-01-06 17:49:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2021-01-06 17:49:58,249 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 31 [2021-01-06 17:49:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:58,250 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2021-01-06 17:49:58,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:49:58,250 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2021-01-06 17:49:58,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:49:58,251 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:58,251 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2021-01-06 17:49:58,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:49:58,468 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:58,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:58,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2021-01-06 17:49:58,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:58,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667017592] [2021-01-06 17:49:58,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:58,487 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:58,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91402863] [2021-01-06 17:49:58,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:58,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:49:58,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:58,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-06 17:49:58,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-06 17:49:58,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667017592] [2021-01-06 17:49:58,706 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:58,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91402863] [2021-01-06 17:49:58,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:58,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:49:58,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619489787] [2021-01-06 17:49:58,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:49:58,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:58,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:49:58,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:49:58,713 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 9 states. [2021-01-06 17:49:59,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:59,015 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2021-01-06 17:49:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:49:59,015 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2021-01-06 17:49:59,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:59,017 INFO L225 Difference]: With dead ends: 122 [2021-01-06 17:49:59,017 INFO L226 Difference]: Without dead ends: 112 [2021-01-06 17:49:59,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:49:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-01-06 17:49:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2021-01-06 17:49:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 17:49:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2021-01-06 17:49:59,031 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 34 [2021-01-06 17:49:59,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:59,031 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2021-01-06 17:49:59,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:49:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2021-01-06 17:49:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:49:59,032 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:59,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:59,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:49:59,248 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:59,249 INFO L82 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2021-01-06 17:49:59,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:59,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258888961] [2021-01-06 17:49:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:59,257 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:59,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687479864] [2021-01-06 17:49:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:49:59,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:49:59,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:59,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258888961] [2021-01-06 17:49:59,437 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:59,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687479864] [2021-01-06 17:49:59,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:59,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:49:59,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452703991] [2021-01-06 17:49:59,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:49:59,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:59,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:49:59,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:49:59,439 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 8 states. [2021-01-06 17:49:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:59,566 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2021-01-06 17:49:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:49:59,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2021-01-06 17:49:59,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:59,567 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:49:59,567 INFO L226 Difference]: Without dead ends: 81 [2021-01-06 17:49:59,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:49:59,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-01-06 17:49:59,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-01-06 17:49:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:49:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2021-01-06 17:49:59,576 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 34 [2021-01-06 17:49:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:59,577 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2021-01-06 17:49:59,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:49:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2021-01-06 17:49:59,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 17:49:59,577 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:59,578 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:49:59,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:59,792 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:49:59,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:49:59,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2021-01-06 17:49:59,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:49:59,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896128659] [2021-01-06 17:49:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:49:59,802 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:49:59,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865304330] [2021-01-06 17:49:59,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:49:59,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:49:59,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:49:59,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:49:59,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:49:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:49:59,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896128659] [2021-01-06 17:49:59,929 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:49:59,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865304330] [2021-01-06 17:49:59,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:49:59,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:49:59,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537472811] [2021-01-06 17:49:59,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:49:59,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:49:59,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:49:59,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:49:59,931 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 7 states. [2021-01-06 17:49:59,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:49:59,978 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2021-01-06 17:49:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:49:59,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2021-01-06 17:49:59,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:49:59,979 INFO L225 Difference]: With dead ends: 91 [2021-01-06 17:49:59,979 INFO L226 Difference]: Without dead ends: 83 [2021-01-06 17:49:59,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:49:59,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-01-06 17:49:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-01-06 17:49:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-01-06 17:49:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2021-01-06 17:49:59,989 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 35 [2021-01-06 17:49:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:49:59,989 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2021-01-06 17:49:59,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:49:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2021-01-06 17:49:59,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:49:59,990 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:49:59,990 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:00,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:50:00,205 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:00,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2021-01-06 17:50:00,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:00,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102375417] [2021-01-06 17:50:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:00,215 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:00,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472562522] [2021-01-06 17:50:00,216 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 17:50:00,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:00,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:00,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:50:00,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:00,436 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 17:50:00,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102375417] [2021-01-06 17:50:00,436 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:00,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472562522] [2021-01-06 17:50:00,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:00,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:00,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413989961] [2021-01-06 17:50:00,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:00,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:00,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:00,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:00,438 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 8 states. [2021-01-06 17:50:00,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:00,724 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2021-01-06 17:50:00,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:50:00,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2021-01-06 17:50:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:00,726 INFO L225 Difference]: With dead ends: 151 [2021-01-06 17:50:00,726 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 17:50:00,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:00,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 17:50:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2021-01-06 17:50:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-01-06 17:50:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2021-01-06 17:50:00,736 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 37 [2021-01-06 17:50:00,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:00,736 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2021-01-06 17:50:00,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:00,737 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2021-01-06 17:50:00,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 17:50:00,737 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:00,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:00,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:50:00,951 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:00,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:00,952 INFO L82 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2021-01-06 17:50:00,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:00,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506797873] [2021-01-06 17:50:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:00,970 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:00,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137794361] [2021-01-06 17:50:00,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:01,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:01,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:01,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:50:01,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:01,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506797873] [2021-01-06 17:50:01,097 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:01,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137794361] [2021-01-06 17:50:01,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:01,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:50:01,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686771684] [2021-01-06 17:50:01,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:01,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:01,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:01,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:01,101 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand 8 states. [2021-01-06 17:50:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:01,140 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2021-01-06 17:50:01,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:50:01,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2021-01-06 17:50:01,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:01,142 INFO L225 Difference]: With dead ends: 116 [2021-01-06 17:50:01,142 INFO L226 Difference]: Without dead ends: 106 [2021-01-06 17:50:01,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:01,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-06 17:50:01,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2021-01-06 17:50:01,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-01-06 17:50:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2021-01-06 17:50:01,151 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 38 [2021-01-06 17:50:01,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:01,152 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2021-01-06 17:50:01,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:01,152 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2021-01-06 17:50:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 17:50:01,152 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:01,153 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:01,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:01,368 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:01,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:01,369 INFO L82 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2021-01-06 17:50:01,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:01,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858151175] [2021-01-06 17:50:01,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:01,378 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:01,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381796941] [2021-01-06 17:50:01,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:01,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-06 17:50:01,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:01,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:50:01,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:01,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858151175] [2021-01-06 17:50:01,528 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:01,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381796941] [2021-01-06 17:50:01,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:01,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:50:01,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354881874] [2021-01-06 17:50:01,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:01,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:01,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:01,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:01,531 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 8 states. [2021-01-06 17:50:01,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:01,590 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2021-01-06 17:50:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:50:01,591 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2021-01-06 17:50:01,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:01,592 INFO L225 Difference]: With dead ends: 115 [2021-01-06 17:50:01,592 INFO L226 Difference]: Without dead ends: 107 [2021-01-06 17:50:01,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:50:01,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-01-06 17:50:01,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-01-06 17:50:01,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-01-06 17:50:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2021-01-06 17:50:01,604 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 43 [2021-01-06 17:50:01,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:01,604 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2021-01-06 17:50:01,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2021-01-06 17:50:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:50:01,605 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:01,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-01-06 17:50:01,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:01,819 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:01,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2021-01-06 17:50:01,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:01,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788614563] [2021-01-06 17:50:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:01,828 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:01,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957344466] [2021-01-06 17:50:01,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:01,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:50:01,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:01,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-06 17:50:01,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:02,060 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:50:02,074 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:50:02,083 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 17:50:02,108 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:50:02,110 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:50:02,118 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:50:02,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:50:02,130 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:50:02,147 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:50:02,154 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 17:50:02,163 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:50:02,166 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:50:02,171 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:50:02,179 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:50:02,182 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:50:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 17:50:02,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788614563] [2021-01-06 17:50:02,647 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:02,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957344466] [2021-01-06 17:50:02,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:02,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:50:02,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920769313] [2021-01-06 17:50:02,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:50:02,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:02,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:50:02,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:50:02,649 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 10 states. [2021-01-06 17:50:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:02,877 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-01-06 17:50:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:50:02,877 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2021-01-06 17:50:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:02,878 INFO L225 Difference]: With dead ends: 111 [2021-01-06 17:50:02,878 INFO L226 Difference]: Without dead ends: 109 [2021-01-06 17:50:02,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:50:02,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-06 17:50:02,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2021-01-06 17:50:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-01-06 17:50:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2021-01-06 17:50:02,891 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 44 [2021-01-06 17:50:02,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:02,891 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2021-01-06 17:50:02,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:50:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2021-01-06 17:50:02,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:50:02,892 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:02,892 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:03,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:03,107 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:03,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:03,108 INFO L82 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2021-01-06 17:50:03,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:03,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475696765] [2021-01-06 17:50:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:03,117 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:03,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860625216] [2021-01-06 17:50:03,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:03,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:50:03,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:03,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 17:50:03,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:03,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475696765] [2021-01-06 17:50:03,296 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:03,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860625216] [2021-01-06 17:50:03,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:03,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:03,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808276111] [2021-01-06 17:50:03,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:50:03,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:03,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:50:03,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:03,298 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 9 states. [2021-01-06 17:50:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:03,353 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2021-01-06 17:50:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:50:03,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2021-01-06 17:50:03,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:03,354 INFO L225 Difference]: With dead ends: 127 [2021-01-06 17:50:03,354 INFO L226 Difference]: Without dead ends: 117 [2021-01-06 17:50:03,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-01-06 17:50:03,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-01-06 17:50:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-06 17:50:03,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2021-01-06 17:50:03,366 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 45 [2021-01-06 17:50:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:03,366 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2021-01-06 17:50:03,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:50:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2021-01-06 17:50:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 17:50:03,367 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:03,367 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:03,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 17:50:03,582 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:03,583 INFO L82 PathProgramCache]: Analyzing trace with hash 494883615, now seen corresponding path program 2 times [2021-01-06 17:50:03,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:03,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991704741] [2021-01-06 17:50:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:03,591 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:03,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127629621] [2021-01-06 17:50:03,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:03,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:50:03,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:03,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:50:03,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-01-06 17:50:03,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991704741] [2021-01-06 17:50:03,812 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:03,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127629621] [2021-01-06 17:50:03,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:03,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:50:03,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496442123] [2021-01-06 17:50:03,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:50:03,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:03,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:50:03,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:03,813 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand 11 states. [2021-01-06 17:50:04,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:04,214 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2021-01-06 17:50:04,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:50:04,215 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2021-01-06 17:50:04,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:04,217 INFO L225 Difference]: With dead ends: 132 [2021-01-06 17:50:04,217 INFO L226 Difference]: Without dead ends: 120 [2021-01-06 17:50:04,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:50:04,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-01-06 17:50:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2021-01-06 17:50:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-01-06 17:50:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-01-06 17:50:04,232 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 49 [2021-01-06 17:50:04,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:04,232 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-01-06 17:50:04,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:50:04,232 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-01-06 17:50:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 17:50:04,233 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:04,233 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:04,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-06 17:50:04,450 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:04,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:04,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2054725181, now seen corresponding path program 4 times [2021-01-06 17:50:04,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:04,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991565805] [2021-01-06 17:50:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:04,458 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:04,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709032247] [2021-01-06 17:50:04,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:04,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:50:04,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:04,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 17:50:04,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:04,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991565805] [2021-01-06 17:50:04,608 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:04,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709032247] [2021-01-06 17:50:04,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:04,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:04,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401916353] [2021-01-06 17:50:04,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:50:04,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:04,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:50:04,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:04,610 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 9 states. [2021-01-06 17:50:04,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:04,689 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2021-01-06 17:50:04,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:50:04,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2021-01-06 17:50:04,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:04,690 INFO L225 Difference]: With dead ends: 118 [2021-01-06 17:50:04,690 INFO L226 Difference]: Without dead ends: 110 [2021-01-06 17:50:04,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:50:04,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-01-06 17:50:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-01-06 17:50:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-01-06 17:50:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-01-06 17:50:04,702 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 51 [2021-01-06 17:50:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:04,703 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-01-06 17:50:04,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:50:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-01-06 17:50:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 17:50:04,704 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:04,704 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:04,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:04,920 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:04,920 INFO L82 PathProgramCache]: Analyzing trace with hash -12168916, now seen corresponding path program 4 times [2021-01-06 17:50:04,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:04,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231588768] [2021-01-06 17:50:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:04,929 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:04,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301634871] [2021-01-06 17:50:04,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:05,271 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:50:05,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:05,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:50:05,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:05,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231588768] [2021-01-06 17:50:05,379 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:05,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301634871] [2021-01-06 17:50:05,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:05,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:50:05,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903539873] [2021-01-06 17:50:05,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:50:05,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:05,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:50:05,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:50:05,381 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 10 states. [2021-01-06 17:50:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:05,453 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2021-01-06 17:50:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:50:05,454 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2021-01-06 17:50:05,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:05,455 INFO L225 Difference]: With dead ends: 141 [2021-01-06 17:50:05,455 INFO L226 Difference]: Without dead ends: 131 [2021-01-06 17:50:05,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:50:05,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-01-06 17:50:05,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2021-01-06 17:50:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-01-06 17:50:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2021-01-06 17:50:05,469 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 52 [2021-01-06 17:50:05,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:05,469 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2021-01-06 17:50:05,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:50:05,469 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2021-01-06 17:50:05,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 17:50:05,470 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:05,470 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:05,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-06 17:50:05,686 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:05,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:05,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1005826959, now seen corresponding path program 5 times [2021-01-06 17:50:05,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:05,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859831684] [2021-01-06 17:50:05,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:05,707 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:05,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807703916] [2021-01-06 17:50:05,708 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:05,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-06 17:50:05,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:05,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:50:05,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:05,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859831684] [2021-01-06 17:50:05,877 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:05,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807703916] [2021-01-06 17:50:05,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:05,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:50:05,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836386514] [2021-01-06 17:50:05,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:50:05,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:05,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:50:05,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:50:05,879 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand 10 states. [2021-01-06 17:50:05,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:05,980 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2021-01-06 17:50:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:50:05,981 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2021-01-06 17:50:05,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:05,982 INFO L225 Difference]: With dead ends: 140 [2021-01-06 17:50:05,982 INFO L226 Difference]: Without dead ends: 132 [2021-01-06 17:50:05,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:50:05,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-01-06 17:50:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-01-06 17:50:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-06 17:50:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2021-01-06 17:50:05,995 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 59 [2021-01-06 17:50:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:05,995 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2021-01-06 17:50:05,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:50:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2021-01-06 17:50:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 17:50:05,996 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:05,996 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:06,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:06,210 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:06,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:06,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1674511849, now seen corresponding path program 5 times [2021-01-06 17:50:06,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:06,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844300456] [2021-01-06 17:50:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:06,223 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:06,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40383009] [2021-01-06 17:50:06,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:06,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-06 17:50:06,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:06,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:50:06,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:06,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844300456] [2021-01-06 17:50:06,477 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:06,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40383009] [2021-01-06 17:50:06,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:06,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:50:06,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004846767] [2021-01-06 17:50:06,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:50:06,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:06,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:50:06,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:06,479 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 11 states. [2021-01-06 17:50:06,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:06,565 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2021-01-06 17:50:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:50:06,566 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2021-01-06 17:50:06,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:06,567 INFO L225 Difference]: With dead ends: 163 [2021-01-06 17:50:06,567 INFO L226 Difference]: Without dead ends: 153 [2021-01-06 17:50:06,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:50:06,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-01-06 17:50:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-01-06 17:50:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-01-06 17:50:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2021-01-06 17:50:06,581 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 59 [2021-01-06 17:50:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:06,581 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2021-01-06 17:50:06,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:50:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2021-01-06 17:50:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 17:50:06,582 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:06,582 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:06,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 17:50:06,794 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:06,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:06,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1527902860, now seen corresponding path program 6 times [2021-01-06 17:50:06,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:06,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76742674] [2021-01-06 17:50:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:06,812 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:06,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175494741] [2021-01-06 17:50:06,812 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:06,903 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-06 17:50:06,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:06,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:50:06,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:07,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76742674] [2021-01-06 17:50:07,065 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:07,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175494741] [2021-01-06 17:50:07,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:07,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:50:07,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017906352] [2021-01-06 17:50:07,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:50:07,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:07,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:50:07,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:50:07,067 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 12 states. [2021-01-06 17:50:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:07,179 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2021-01-06 17:50:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 17:50:07,179 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2021-01-06 17:50:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:07,181 INFO L225 Difference]: With dead ends: 187 [2021-01-06 17:50:07,181 INFO L226 Difference]: Without dead ends: 175 [2021-01-06 17:50:07,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:50:07,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-01-06 17:50:07,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-01-06 17:50:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2021-01-06 17:50:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2021-01-06 17:50:07,197 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 66 [2021-01-06 17:50:07,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:07,197 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2021-01-06 17:50:07,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:50:07,197 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2021-01-06 17:50:07,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 17:50:07,198 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:07,198 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:07,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-06 17:50:07,413 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:07,414 INFO L82 PathProgramCache]: Analyzing trace with hash -817031031, now seen corresponding path program 7 times [2021-01-06 17:50:07,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:07,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032665612] [2021-01-06 17:50:07,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:07,422 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:07,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330815489] [2021-01-06 17:50:07,423 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:07,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:50:07,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:07,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032665612] [2021-01-06 17:50:07,644 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:07,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330815489] [2021-01-06 17:50:07,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:07,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:50:07,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242877007] [2021-01-06 17:50:07,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:50:07,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:07,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:50:07,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:50:07,646 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand 13 states. [2021-01-06 17:50:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:07,781 INFO L93 Difference]: Finished difference Result 209 states and 234 transitions. [2021-01-06 17:50:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 17:50:07,781 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2021-01-06 17:50:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:07,783 INFO L225 Difference]: With dead ends: 209 [2021-01-06 17:50:07,783 INFO L226 Difference]: Without dead ends: 197 [2021-01-06 17:50:07,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:50:07,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-01-06 17:50:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-01-06 17:50:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-01-06 17:50:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 219 transitions. [2021-01-06 17:50:07,802 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 219 transitions. Word has length 73 [2021-01-06 17:50:07,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:07,802 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 219 transitions. [2021-01-06 17:50:07,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:50:07,803 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 219 transitions. [2021-01-06 17:50:07,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 17:50:07,804 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:07,804 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:08,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-06 17:50:08,018 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:08,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:08,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1740090348, now seen corresponding path program 8 times [2021-01-06 17:50:08,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:08,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229845302] [2021-01-06 17:50:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:08,027 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:08,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418321811] [2021-01-06 17:50:08,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:08,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:08,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:08,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:50:08,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:08,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229845302] [2021-01-06 17:50:08,298 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:08,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418321811] [2021-01-06 17:50:08,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:08,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:50:08,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525020906] [2021-01-06 17:50:08,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:50:08,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:08,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:50:08,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:50:08,299 INFO L87 Difference]: Start difference. First operand 196 states and 219 transitions. Second operand 14 states. [2021-01-06 17:50:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:08,453 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2021-01-06 17:50:08,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 17:50:08,454 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2021-01-06 17:50:08,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:08,455 INFO L225 Difference]: With dead ends: 231 [2021-01-06 17:50:08,455 INFO L226 Difference]: Without dead ends: 219 [2021-01-06 17:50:08,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:50:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-01-06 17:50:08,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2021-01-06 17:50:08,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2021-01-06 17:50:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 244 transitions. [2021-01-06 17:50:08,476 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 244 transitions. Word has length 80 [2021-01-06 17:50:08,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:08,476 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 244 transitions. [2021-01-06 17:50:08,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:50:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 244 transitions. [2021-01-06 17:50:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-01-06 17:50:08,477 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:08,478 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:08,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:08,694 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:08,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:08,695 INFO L82 PathProgramCache]: Analyzing trace with hash -588901591, now seen corresponding path program 9 times [2021-01-06 17:50:08,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:08,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409458583] [2021-01-06 17:50:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:08,702 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:08,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601143425] [2021-01-06 17:50:08,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:08,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-06 17:50:08,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:08,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:50:08,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:09,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409458583] [2021-01-06 17:50:09,153 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:09,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601143425] [2021-01-06 17:50:09,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:09,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:50:09,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176390752] [2021-01-06 17:50:09,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:50:09,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:09,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:50:09,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:50:09,155 INFO L87 Difference]: Start difference. First operand 218 states and 244 transitions. Second operand 15 states. [2021-01-06 17:50:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:09,344 INFO L93 Difference]: Finished difference Result 253 states and 284 transitions. [2021-01-06 17:50:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 17:50:09,345 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 87 [2021-01-06 17:50:09,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:09,346 INFO L225 Difference]: With dead ends: 253 [2021-01-06 17:50:09,347 INFO L226 Difference]: Without dead ends: 241 [2021-01-06 17:50:09,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=181, Invalid=325, Unknown=0, NotChecked=0, Total=506 [2021-01-06 17:50:09,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-01-06 17:50:09,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-01-06 17:50:09,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-01-06 17:50:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 269 transitions. [2021-01-06 17:50:09,369 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 269 transitions. Word has length 87 [2021-01-06 17:50:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:09,369 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 269 transitions. [2021-01-06 17:50:09,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:50:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 269 transitions. [2021-01-06 17:50:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-06 17:50:09,372 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:09,372 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:09,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-06 17:50:09,588 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:09,589 INFO L82 PathProgramCache]: Analyzing trace with hash 833453388, now seen corresponding path program 10 times [2021-01-06 17:50:09,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:09,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562085610] [2021-01-06 17:50:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:09,598 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:09,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517221887] [2021-01-06 17:50:09,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:09,778 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:50:09,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:09,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:50:09,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:09,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562085610] [2021-01-06 17:50:09,996 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:09,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517221887] [2021-01-06 17:50:09,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:09,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:50:09,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757173216] [2021-01-06 17:50:09,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 17:50:09,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:09,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 17:50:09,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:50:09,998 INFO L87 Difference]: Start difference. First operand 240 states and 269 transitions. Second operand 16 states. [2021-01-06 17:50:10,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:10,202 INFO L93 Difference]: Finished difference Result 275 states and 309 transitions. [2021-01-06 17:50:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 17:50:10,202 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 94 [2021-01-06 17:50:10,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:10,204 INFO L225 Difference]: With dead ends: 275 [2021-01-06 17:50:10,204 INFO L226 Difference]: Without dead ends: 263 [2021-01-06 17:50:10,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2021-01-06 17:50:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-01-06 17:50:10,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-01-06 17:50:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2021-01-06 17:50:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 294 transitions. [2021-01-06 17:50:10,247 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 294 transitions. Word has length 94 [2021-01-06 17:50:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:10,248 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 294 transitions. [2021-01-06 17:50:10,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 17:50:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 294 transitions. [2021-01-06 17:50:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-06 17:50:10,249 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:10,249 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:10,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:10,455 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:10,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1352403511, now seen corresponding path program 11 times [2021-01-06 17:50:10,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:10,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410643099] [2021-01-06 17:50:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:10,470 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:10,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745872949] [2021-01-06 17:50:10,471 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:10,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-06 17:53:10,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:53:10,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:53:10,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:53:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:53:11,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410643099] [2021-01-06 17:53:11,015 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:53:11,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745872949] [2021-01-06 17:53:11,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:53:11,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-01-06 17:53:11,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828128388] [2021-01-06 17:53:11,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:53:11,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:53:11,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:53:11,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:53:11,017 INFO L87 Difference]: Start difference. First operand 262 states and 294 transitions. Second operand 17 states. [2021-01-06 17:53:11,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:53:11,234 INFO L93 Difference]: Finished difference Result 297 states and 334 transitions. [2021-01-06 17:53:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 17:53:11,234 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2021-01-06 17:53:11,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:53:11,236 INFO L225 Difference]: With dead ends: 297 [2021-01-06 17:53:11,236 INFO L226 Difference]: Without dead ends: 285 [2021-01-06 17:53:11,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=252, Invalid=450, Unknown=0, NotChecked=0, Total=702 [2021-01-06 17:53:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-01-06 17:53:11,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2021-01-06 17:53:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2021-01-06 17:53:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 319 transitions. [2021-01-06 17:53:11,261 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 319 transitions. Word has length 101 [2021-01-06 17:53:11,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:53:11,262 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 319 transitions. [2021-01-06 17:53:11,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:53:11,262 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 319 transitions. [2021-01-06 17:53:11,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-01-06 17:53:11,263 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:53:11,263 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:53:11,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-06 17:53:11,464 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:53:11,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:53:11,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1092000084, now seen corresponding path program 12 times [2021-01-06 17:53:11,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:53:11,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526806891] [2021-01-06 17:53:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:53:11,471 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:53:11,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382385804] [2021-01-06 17:53:11,471 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:11,997 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-01-06 17:53:11,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:53:12,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:53:12,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:53:12,308 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:53:12,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526806891] [2021-01-06 17:53:12,309 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:53:12,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382385804] [2021-01-06 17:53:12,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:53:12,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-01-06 17:53:12,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312702097] [2021-01-06 17:53:12,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 17:53:12,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:53:12,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 17:53:12,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:53:12,311 INFO L87 Difference]: Start difference. First operand 284 states and 319 transitions. Second operand 18 states. [2021-01-06 17:53:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:53:12,575 INFO L93 Difference]: Finished difference Result 319 states and 359 transitions. [2021-01-06 17:53:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-06 17:53:12,576 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2021-01-06 17:53:12,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:53:12,578 INFO L225 Difference]: With dead ends: 319 [2021-01-06 17:53:12,578 INFO L226 Difference]: Without dead ends: 307 [2021-01-06 17:53:12,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=292, Invalid=520, Unknown=0, NotChecked=0, Total=812 [2021-01-06 17:53:12,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-01-06 17:53:12,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2021-01-06 17:53:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2021-01-06 17:53:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 344 transitions. [2021-01-06 17:53:12,605 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 344 transitions. Word has length 108 [2021-01-06 17:53:12,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:53:12,605 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 344 transitions. [2021-01-06 17:53:12,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 17:53:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 344 transitions. [2021-01-06 17:53:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-01-06 17:53:12,607 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:53:12,607 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:53:12,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-06 17:53:12,821 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:53:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:53:12,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1072643991, now seen corresponding path program 13 times [2021-01-06 17:53:12,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:53:12,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452806507] [2021-01-06 17:53:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:53:12,830 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:53:12,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953847489] [2021-01-06 17:53:12,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:53:12,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:53:12,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:53:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:53:13,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452806507] [2021-01-06 17:53:13,252 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:53:13,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953847489] [2021-01-06 17:53:13,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:53:13,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-01-06 17:53:13,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361863249] [2021-01-06 17:53:13,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 17:53:13,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:53:13,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 17:53:13,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:53:13,254 INFO L87 Difference]: Start difference. First operand 306 states and 344 transitions. Second operand 19 states. [2021-01-06 17:53:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:53:13,529 INFO L93 Difference]: Finished difference Result 341 states and 384 transitions. [2021-01-06 17:53:13,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-06 17:53:13,530 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 115 [2021-01-06 17:53:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:53:13,532 INFO L225 Difference]: With dead ends: 341 [2021-01-06 17:53:13,532 INFO L226 Difference]: Without dead ends: 329 [2021-01-06 17:53:13,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=335, Invalid=595, Unknown=0, NotChecked=0, Total=930 [2021-01-06 17:53:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-01-06 17:53:13,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2021-01-06 17:53:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2021-01-06 17:53:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 369 transitions. [2021-01-06 17:53:13,561 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 369 transitions. Word has length 115 [2021-01-06 17:53:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:53:13,562 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 369 transitions. [2021-01-06 17:53:13,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 17:53:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 369 transitions. [2021-01-06 17:53:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-01-06 17:53:13,563 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:53:13,564 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:53:13,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-06 17:53:13,778 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:53:13,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:53:13,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1860265996, now seen corresponding path program 14 times [2021-01-06 17:53:13,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:53:13,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27290605] [2021-01-06 17:53:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:53:13,787 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:53:13,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585298379] [2021-01-06 17:53:13,787 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:13,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:53:13,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:53:13,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:53:13,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:53:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:53:14,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27290605] [2021-01-06 17:53:14,238 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:53:14,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585298379] [2021-01-06 17:53:14,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:53:14,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-01-06 17:53:14,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688678879] [2021-01-06 17:53:14,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 17:53:14,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:53:14,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 17:53:14,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-01-06 17:53:14,240 INFO L87 Difference]: Start difference. First operand 328 states and 369 transitions. Second operand 20 states. [2021-01-06 17:53:14,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:53:14,542 INFO L93 Difference]: Finished difference Result 363 states and 409 transitions. [2021-01-06 17:53:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-06 17:53:14,542 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 122 [2021-01-06 17:53:14,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:53:14,544 INFO L225 Difference]: With dead ends: 363 [2021-01-06 17:53:14,544 INFO L226 Difference]: Without dead ends: 351 [2021-01-06 17:53:14,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=381, Invalid=675, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 17:53:14,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-01-06 17:53:14,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 350. [2021-01-06 17:53:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2021-01-06 17:53:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 394 transitions. [2021-01-06 17:53:14,574 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 394 transitions. Word has length 122 [2021-01-06 17:53:14,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:53:14,575 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 394 transitions. [2021-01-06 17:53:14,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 17:53:14,575 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 394 transitions. [2021-01-06 17:53:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-01-06 17:53:14,576 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:53:14,577 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:53:14,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-06 17:53:14,792 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:53:14,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:53:14,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2125886217, now seen corresponding path program 15 times [2021-01-06 17:53:14,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:53:14,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508092632] [2021-01-06 17:53:14,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:53:14,801 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:53:14,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162663693] [2021-01-06 17:53:14,801 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:15,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-01-06 17:53:15,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:53:15,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:53:15,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:53:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:53:15,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508092632] [2021-01-06 17:53:15,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:53:15,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162663693] [2021-01-06 17:53:15,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:53:15,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-01-06 17:53:15,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244071665] [2021-01-06 17:53:15,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 17:53:15,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:53:15,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 17:53:15,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:53:15,437 INFO L87 Difference]: Start difference. First operand 350 states and 394 transitions. Second operand 21 states. [2021-01-06 17:53:15,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:53:15,779 INFO L93 Difference]: Finished difference Result 385 states and 434 transitions. [2021-01-06 17:53:15,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-06 17:53:15,779 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 129 [2021-01-06 17:53:15,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:53:15,781 INFO L225 Difference]: With dead ends: 385 [2021-01-06 17:53:15,782 INFO L226 Difference]: Without dead ends: 373 [2021-01-06 17:53:15,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=430, Invalid=760, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 17:53:15,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-01-06 17:53:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 372. [2021-01-06 17:53:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2021-01-06 17:53:15,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 419 transitions. [2021-01-06 17:53:15,813 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 419 transitions. Word has length 129 [2021-01-06 17:53:15,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:53:15,813 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 419 transitions. [2021-01-06 17:53:15,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 17:53:15,814 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 419 transitions. [2021-01-06 17:53:15,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-01-06 17:53:15,816 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:53:15,816 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:53:16,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-06 17:53:16,032 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:53:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:53:16,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1519092076, now seen corresponding path program 16 times [2021-01-06 17:53:16,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:53:16,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795271521] [2021-01-06 17:53:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:53:16,044 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:53:16,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [760572745] [2021-01-06 17:53:16,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:17,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:53:17,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:53:17,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:53:17,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:53:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 789 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:53:18,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795271521] [2021-01-06 17:53:18,212 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:53:18,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760572745] [2021-01-06 17:53:18,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:53:18,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-01-06 17:53:18,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868058651] [2021-01-06 17:53:18,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 17:53:18,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:53:18,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 17:53:18,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:53:18,214 INFO L87 Difference]: Start difference. First operand 372 states and 419 transitions. Second operand 22 states. [2021-01-06 17:53:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:53:18,580 INFO L93 Difference]: Finished difference Result 407 states and 459 transitions. [2021-01-06 17:53:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-06 17:53:18,581 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 136 [2021-01-06 17:53:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:53:18,583 INFO L225 Difference]: With dead ends: 407 [2021-01-06 17:53:18,583 INFO L226 Difference]: Without dead ends: 395 [2021-01-06 17:53:18,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=482, Invalid=850, Unknown=0, NotChecked=0, Total=1332 [2021-01-06 17:53:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-01-06 17:53:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 394. [2021-01-06 17:53:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2021-01-06 17:53:18,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 444 transitions. [2021-01-06 17:53:18,617 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 444 transitions. Word has length 136 [2021-01-06 17:53:18,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:53:18,617 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 444 transitions. [2021-01-06 17:53:18,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 17:53:18,617 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 444 transitions. [2021-01-06 17:53:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-01-06 17:53:18,619 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:53:18,619 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:53:18,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-06 17:53:18,829 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:53:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:53:18,830 INFO L82 PathProgramCache]: Analyzing trace with hash -241234519, now seen corresponding path program 17 times [2021-01-06 17:53:18,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:53:18,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961143040] [2021-01-06 17:53:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:53:18,840 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:53:18,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723916086] [2021-01-06 17:53:18,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:25,908 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-01-06 17:53:25,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:53:25,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 17:53:25,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:53:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 0 proven. 896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:53:26,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961143040] [2021-01-06 17:53:26,354 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:53:26,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723916086] [2021-01-06 17:53:26,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:53:26,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-01-06 17:53:26,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303512541] [2021-01-06 17:53:26,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 17:53:26,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:53:26,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 17:53:26,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-01-06 17:53:26,356 INFO L87 Difference]: Start difference. First operand 394 states and 444 transitions. Second operand 23 states. [2021-01-06 17:53:26,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:53:26,766 INFO L93 Difference]: Finished difference Result 429 states and 484 transitions. [2021-01-06 17:53:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-06 17:53:26,774 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 143 [2021-01-06 17:53:26,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:53:26,777 INFO L225 Difference]: With dead ends: 429 [2021-01-06 17:53:26,777 INFO L226 Difference]: Without dead ends: 417 [2021-01-06 17:53:26,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=537, Invalid=945, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 17:53:26,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-01-06 17:53:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2021-01-06 17:53:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2021-01-06 17:53:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 469 transitions. [2021-01-06 17:53:26,812 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 469 transitions. Word has length 143 [2021-01-06 17:53:26,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:53:26,813 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 469 transitions. [2021-01-06 17:53:26,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 17:53:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 469 transitions. [2021-01-06 17:53:26,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-01-06 17:53:26,815 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:53:26,815 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:53:27,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-06 17:53:27,023 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:53:27,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:53:27,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1268927796, now seen corresponding path program 18 times [2021-01-06 17:53:27,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:53:27,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240021479] [2021-01-06 17:53:27,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:53:27,033 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:53:27,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77546127] [2021-01-06 17:53:27,033 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:27,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-01-06 17:53:27,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:53:27,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:53:27,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:53:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 288 proven. 43 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2021-01-06 17:53:27,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240021479] [2021-01-06 17:53:27,672 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:53:27,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77546127] [2021-01-06 17:53:27,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:53:27,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:53:27,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196946624] [2021-01-06 17:53:27,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:53:27,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:53:27,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:53:27,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:53:27,673 INFO L87 Difference]: Start difference. First operand 416 states and 469 transitions. Second operand 5 states. [2021-01-06 17:53:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:53:27,735 INFO L93 Difference]: Finished difference Result 531 states and 599 transitions. [2021-01-06 17:53:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:53:27,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2021-01-06 17:53:27,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:53:27,738 INFO L225 Difference]: With dead ends: 531 [2021-01-06 17:53:27,738 INFO L226 Difference]: Without dead ends: 395 [2021-01-06 17:53:27,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:53:27,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-01-06 17:53:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2021-01-06 17:53:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2021-01-06 17:53:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 445 transitions. [2021-01-06 17:53:27,771 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 445 transitions. Word has length 150 [2021-01-06 17:53:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:53:27,771 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 445 transitions. [2021-01-06 17:53:27,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:53:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 445 transitions. [2021-01-06 17:53:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-01-06 17:53:27,773 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:53:27,773 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:53:27,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-06 17:53:27,979 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:53:27,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:53:27,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1624647849, now seen corresponding path program 19 times [2021-01-06 17:53:27,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:53:27,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333568736] [2021-01-06 17:53:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:53:27,989 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:53:27,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507034759] [2021-01-06 17:53:27,989 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:53:28,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:53:28,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:53:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 335 proven. 87 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-01-06 17:53:28,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333568736] [2021-01-06 17:53:28,307 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:53:28,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507034759] [2021-01-06 17:53:28,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:53:28,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:53:28,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686428000] [2021-01-06 17:53:28,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:53:28,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:53:28,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:53:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:53:28,309 INFO L87 Difference]: Start difference. First operand 395 states and 445 transitions. Second operand 9 states. [2021-01-06 17:53:28,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:53:28,441 INFO L93 Difference]: Finished difference Result 612 states and 692 transitions. [2021-01-06 17:53:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:53:28,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2021-01-06 17:53:28,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:53:28,443 INFO L225 Difference]: With dead ends: 612 [2021-01-06 17:53:28,444 INFO L226 Difference]: Without dead ends: 381 [2021-01-06 17:53:28,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:53:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-01-06 17:53:28,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2021-01-06 17:53:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2021-01-06 17:53:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 428 transitions. [2021-01-06 17:53:28,475 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 428 transitions. Word has length 151 [2021-01-06 17:53:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:53:28,475 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 428 transitions. [2021-01-06 17:53:28,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:53:28,476 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 428 transitions. [2021-01-06 17:53:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-01-06 17:53:28,477 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:53:28,478 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:53:28,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:28,691 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:53:28,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:53:28,692 INFO L82 PathProgramCache]: Analyzing trace with hash -187266160, now seen corresponding path program 20 times [2021-01-06 17:53:28,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:53:28,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810556876] [2021-01-06 17:53:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:53:28,701 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:53:28,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213265493] [2021-01-06 17:53:28,701 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:28,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:53:28,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:53:28,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:53:28,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:53:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 354 proven. 146 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-01-06 17:53:29,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810556876] [2021-01-06 17:53:29,001 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:53:29,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213265493] [2021-01-06 17:53:29,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:53:29,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:53:29,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809383341] [2021-01-06 17:53:29,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:53:29,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:53:29,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:53:29,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:53:29,002 INFO L87 Difference]: Start difference. First operand 381 states and 428 transitions. Second operand 7 states. [2021-01-06 17:53:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:53:29,121 INFO L93 Difference]: Finished difference Result 584 states and 659 transitions. [2021-01-06 17:53:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:53:29,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2021-01-06 17:53:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:53:29,122 INFO L225 Difference]: With dead ends: 584 [2021-01-06 17:53:29,123 INFO L226 Difference]: Without dead ends: 367 [2021-01-06 17:53:29,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:53:29,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-01-06 17:53:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2021-01-06 17:53:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2021-01-06 17:53:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 411 transitions. [2021-01-06 17:53:29,153 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 411 transitions. Word has length 152 [2021-01-06 17:53:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:53:29,154 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 411 transitions. [2021-01-06 17:53:29,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:53:29,154 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 411 transitions. [2021-01-06 17:53:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-01-06 17:53:29,156 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:53:29,156 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:53:29,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:29,371 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:53:29,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:53:29,372 INFO L82 PathProgramCache]: Analyzing trace with hash -773202029, now seen corresponding path program 21 times [2021-01-06 17:53:29,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:53:29,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12417650] [2021-01-06 17:53:29,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:53:29,381 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:53:29,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476279839] [2021-01-06 17:53:29,381 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:53:30,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-01-06 17:53:30,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:53:30,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-06 17:53:30,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:53:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 345 proven. 220 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-01-06 17:53:30,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12417650] [2021-01-06 17:53:30,441 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:53:30,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476279839] [2021-01-06 17:53:30,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:53:30,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:53:30,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983914502] [2021-01-06 17:53:30,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:53:30,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:53:30,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:53:30,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:53:30,442 INFO L87 Difference]: Start difference. First operand 367 states and 411 transitions. Second operand 8 states. [2021-01-06 17:53:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:53:30,592 INFO L93 Difference]: Finished difference Result 556 states and 626 transitions. [2021-01-06 17:53:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:53:30,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2021-01-06 17:53:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:53:30,594 INFO L225 Difference]: With dead ends: 556 [2021-01-06 17:53:30,594 INFO L226 Difference]: Without dead ends: 353 [2021-01-06 17:53:30,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:53:30,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-01-06 17:53:30,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-01-06 17:53:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2021-01-06 17:53:30,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 394 transitions. [2021-01-06 17:53:30,625 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 394 transitions. Word has length 153 [2021-01-06 17:53:30,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:53:30,625 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 394 transitions. [2021-01-06 17:53:30,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:53:30,626 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 394 transitions. [2021-01-06 17:53:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-01-06 17:53:30,628 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:53:30,628 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:53:30,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-01-06 17:53:30,841 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:53:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:53:30,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1624092076, now seen corresponding path program 22 times [2021-01-06 17:53:30,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:53:30,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631244196] [2021-01-06 17:53:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:53:30,851 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:53:30,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868445795] [2021-01-06 17:53:30,852 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true