/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:17:04,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:17:04,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:17:04,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:17:04,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:17:04,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:17:04,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:17:04,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:17:04,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:17:04,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:17:04,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:17:04,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:17:04,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:17:04,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:17:04,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:17:04,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:17:04,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:17:04,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:17:04,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:17:04,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:17:04,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:17:04,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:17:04,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:17:04,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:17:04,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:17:04,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:17:04,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:17:04,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:17:04,705 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 17:17:04,761 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:17:04,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:17:04,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:17:04,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:17:04,767 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:17:04,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:17:04,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:17:04,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:17:04,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:17:04,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:17:04,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:17:04,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:17:04,770 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:17:04,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:17:04,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:17:04,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:17:04,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:17:04,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:17:04,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:17:04,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:17:04,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:17:04,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:17:04,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:17:04,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:17:04,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:17:04,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:17:05,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:17:05,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:17:05,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:17:05,340 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:17:05,340 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:17:05,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2021-01-06 17:17:05,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/71e1d34b0/035518f304d546ff90d49815f2d44ac8/FLAGabbdc4b58 [2021-01-06 17:17:06,094 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:17:06,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2021-01-06 17:17:06,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/71e1d34b0/035518f304d546ff90d49815f2d44ac8/FLAGabbdc4b58 [2021-01-06 17:17:06,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/71e1d34b0/035518f304d546ff90d49815f2d44ac8 [2021-01-06 17:17:06,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:17:06,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:17:06,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:17:06,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:17:06,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:17:06,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:17:06" (1/1) ... [2021-01-06 17:17:06,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446d31d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06, skipping insertion in model container [2021-01-06 17:17:06,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:17:06" (1/1) ... [2021-01-06 17:17:06,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:17:06,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:17:06,747 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2021-01-06 17:17:06,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:17:06,788 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:17:06,803 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2021-01-06 17:17:06,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:17:06,834 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:17:06,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06 WrapperNode [2021-01-06 17:17:06,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:17:06,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:17:06,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:17:06,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:17:06,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06" (1/1) ... [2021-01-06 17:17:06,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06" (1/1) ... [2021-01-06 17:17:06,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:17:06,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:17:06,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:17:06,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:17:06,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06" (1/1) ... [2021-01-06 17:17:06,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06" (1/1) ... [2021-01-06 17:17:06,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06" (1/1) ... [2021-01-06 17:17:06,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06" (1/1) ... [2021-01-06 17:17:06,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06" (1/1) ... [2021-01-06 17:17:06,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06" (1/1) ... [2021-01-06 17:17:06,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06" (1/1) ... [2021-01-06 17:17:06,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:17:06,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:17:06,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:17:06,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:17:06,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06" (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 17:17:07,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:17:07,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:17:07,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:17:07,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:17:07,520 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:17:07,520 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-01-06 17:17:07,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:17:07 BoogieIcfgContainer [2021-01-06 17:17:07,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:17:07,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:17:07,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:17:07,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:17:07,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:17:06" (1/3) ... [2021-01-06 17:17:07,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2123bac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:17:07, skipping insertion in model container [2021-01-06 17:17:07,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:17:06" (2/3) ... [2021-01-06 17:17:07,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2123bac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:17:07, skipping insertion in model container [2021-01-06 17:17:07,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:17:07" (3/3) ... [2021-01-06 17:17:07,535 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound1.c [2021-01-06 17:17:07,544 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:17:07,549 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2021-01-06 17:17:07,570 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-01-06 17:17:07,599 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:17:07,600 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:17:07,600 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:17:07,600 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:17:07,600 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:17:07,600 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:17:07,601 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:17:07,601 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:17:07,621 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2021-01-06 17:17:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:17:07,626 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:07,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:07,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:07,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:07,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-01-06 17:17:07,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:07,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334276400] [2021-01-06 17:17:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:07,815 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 17:17:07,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334276400] [2021-01-06 17:17:07,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:17:07,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:17:07,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771023595] [2021-01-06 17:17:07,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:17:07,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:07,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:17:07,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:17:07,840 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2021-01-06 17:17:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:07,863 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2021-01-06 17:17:07,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:17:07,865 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:17:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:07,874 INFO L225 Difference]: With dead ends: 103 [2021-01-06 17:17:07,875 INFO L226 Difference]: Without dead ends: 49 [2021-01-06 17:17:07,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:17:07,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-06 17:17:07,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-01-06 17:17:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-06 17:17:07,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-01-06 17:17:07,917 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2021-01-06 17:17:07,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:07,918 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-01-06 17:17:07,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:17:07,918 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-01-06 17:17:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:17:07,919 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:07,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:07,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:17:07,920 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:07,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:07,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-01-06 17:17:07,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:07,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977250297] [2021-01-06 17:17:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:08,050 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 17:17:08,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977250297] [2021-01-06 17:17:08,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:17:08,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:17:08,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339263658] [2021-01-06 17:17:08,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:17:08,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:08,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:17:08,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:17:08,058 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 4 states. [2021-01-06 17:17:08,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:08,222 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-01-06 17:17:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:17:08,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-06 17:17:08,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:08,224 INFO L225 Difference]: With dead ends: 50 [2021-01-06 17:17:08,224 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 17:17:08,225 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 17:17:08,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 17:17:08,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-01-06 17:17:08,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 17:17:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-01-06 17:17:08,235 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2021-01-06 17:17:08,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:08,235 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-01-06 17:17:08,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:17:08,236 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-01-06 17:17:08,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:17:08,236 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:08,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:08,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:17:08,237 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:08,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:08,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-01-06 17:17:08,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:08,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694729110] [2021-01-06 17:17:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:08,259 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:08,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159029067] [2021-01-06 17:17:08,260 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 17:17:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:08,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:17:08,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:08,410 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 17:17:08,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694729110] [2021-01-06 17:17:08,411 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:08,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159029067] [2021-01-06 17:17:08,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:17:08,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:17:08,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693711728] [2021-01-06 17:17:08,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:17:08,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:08,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:17:08,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:17:08,415 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 6 states. [2021-01-06 17:17:08,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:08,819 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2021-01-06 17:17:08,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:17:08,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-01-06 17:17:08,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:08,822 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:17:08,822 INFO L226 Difference]: Without dead ends: 79 [2021-01-06 17:17:08,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:08,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-06 17:17:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2021-01-06 17:17:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:17:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2021-01-06 17:17:08,837 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 9 [2021-01-06 17:17:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:08,838 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2021-01-06 17:17:08,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:17:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2021-01-06 17:17:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:17:08,839 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:08,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:09,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 17:17:09,054 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:09,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-01-06 17:17:09,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:09,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900009085] [2021-01-06 17:17:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:09,078 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:09,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918939435] [2021-01-06 17:17:09,078 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 17:17:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:09,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:17:09,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:09,183 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 17:17:09,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900009085] [2021-01-06 17:17:09,184 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:09,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918939435] [2021-01-06 17:17:09,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:17:09,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:17:09,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103196035] [2021-01-06 17:17:09,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:17:09,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:09,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:17:09,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:17:09,186 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 6 states. [2021-01-06 17:17:09,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:09,307 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2021-01-06 17:17:09,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:17:09,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 17:17:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:09,309 INFO L225 Difference]: With dead ends: 78 [2021-01-06 17:17:09,309 INFO L226 Difference]: Without dead ends: 74 [2021-01-06 17:17:09,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:09,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-06 17:17:09,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2021-01-06 17:17:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:17:09,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-01-06 17:17:09,323 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 11 [2021-01-06 17:17:09,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:09,323 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-01-06 17:17:09,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:17:09,323 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-01-06 17:17:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:17:09,324 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:09,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:09,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:09,540 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:09,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:09,542 INFO L82 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2021-01-06 17:17:09,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:09,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476836447] [2021-01-06 17:17:09,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:09,557 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:09,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573543665] [2021-01-06 17:17:09,558 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 17:17:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:09,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:17:09,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:09,685 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 17:17:09,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476836447] [2021-01-06 17:17:09,687 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:09,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573543665] [2021-01-06 17:17:09,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:17:09,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:17:09,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809413879] [2021-01-06 17:17:09,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:17:09,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:09,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:17:09,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:17:09,695 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 6 states. [2021-01-06 17:17:09,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:09,881 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-01-06 17:17:09,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:17:09,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-01-06 17:17:09,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:09,884 INFO L225 Difference]: With dead ends: 75 [2021-01-06 17:17:09,884 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 17:17:09,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:09,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 17:17:09,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-01-06 17:17:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 17:17:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-01-06 17:17:09,909 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2021-01-06 17:17:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:09,909 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-01-06 17:17:09,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:17:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-01-06 17:17:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:17:09,910 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:09,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:10,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:10,124 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:10,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:10,125 INFO L82 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2021-01-06 17:17:10,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:10,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939619051] [2021-01-06 17:17:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:10,146 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:10,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103501667] [2021-01-06 17:17:10,147 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 17:17:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:10,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:17:10,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:10,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939619051] [2021-01-06 17:17:10,342 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:10,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103501667] [2021-01-06 17:17:10,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:10,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:17:10,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464233718] [2021-01-06 17:17:10,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:17:10,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:10,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:17:10,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:10,345 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 7 states. [2021-01-06 17:17:10,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:10,541 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2021-01-06 17:17:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:17:10,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-06 17:17:10,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:10,543 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:17:10,543 INFO L226 Difference]: Without dead ends: 92 [2021-01-06 17:17:10,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:17:10,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-06 17:17:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2021-01-06 17:17:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 17:17:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2021-01-06 17:17:10,553 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 20 [2021-01-06 17:17:10,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:10,553 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2021-01-06 17:17:10,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:17:10,553 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2021-01-06 17:17:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:17:10,554 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:10,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:10,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:10,769 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:10,770 INFO L82 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2021-01-06 17:17:10,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:10,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827095781] [2021-01-06 17:17:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:10,789 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:10,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508115284] [2021-01-06 17:17:10,790 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 17:17:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:10,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:17:10,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:10,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827095781] [2021-01-06 17:17:10,959 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:10,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508115284] [2021-01-06 17:17:10,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:10,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:17:10,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521295255] [2021-01-06 17:17:10,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:17:10,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:10,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:17:10,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:10,961 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2021-01-06 17:17:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:11,136 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2021-01-06 17:17:11,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:17:11,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-01-06 17:17:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:11,137 INFO L225 Difference]: With dead ends: 91 [2021-01-06 17:17:11,138 INFO L226 Difference]: Without dead ends: 81 [2021-01-06 17:17:11,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:17:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-01-06 17:17:11,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2021-01-06 17:17:11,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:17:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2021-01-06 17:17:11,146 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 22 [2021-01-06 17:17:11,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:11,146 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2021-01-06 17:17:11,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:17:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2021-01-06 17:17:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:17:11,148 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:11,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:11,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:17:11,362 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:11,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:11,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2021-01-06 17:17:11,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:11,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730355556] [2021-01-06 17:17:11,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:11,377 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:11,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422547619] [2021-01-06 17:17:11,378 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 17:17:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:11,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 17:17:11,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:11,624 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:17:11,646 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 17:17:11,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730355556] [2021-01-06 17:17:11,647 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:11,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422547619] [2021-01-06 17:17:11,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:11,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:17:11,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462095458] [2021-01-06 17:17:11,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:17:11,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:11,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:17:11,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:17:11,649 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 8 states. [2021-01-06 17:17:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:12,149 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-01-06 17:17:12,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:17:12,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:17:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:12,152 INFO L225 Difference]: With dead ends: 81 [2021-01-06 17:17:12,153 INFO L226 Difference]: Without dead ends: 79 [2021-01-06 17:17:12,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:17:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-06 17:17:12,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2021-01-06 17:17:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:17:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2021-01-06 17:17:12,162 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 31 [2021-01-06 17:17:12,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:12,162 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2021-01-06 17:17:12,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:17:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2021-01-06 17:17:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:17:12,163 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:12,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:12,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:12,378 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:12,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:12,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1811048370, now seen corresponding path program 2 times [2021-01-06 17:17:12,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:12,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620553958] [2021-01-06 17:17:12,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:12,391 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:12,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331094519] [2021-01-06 17:17:12,392 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 17:17:12,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:17:12,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:12,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:17:12,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:12,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620553958] [2021-01-06 17:17:12,609 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:12,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331094519] [2021-01-06 17:17:12,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:12,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:17:12,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9234734] [2021-01-06 17:17:12,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:17:12,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:12,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:17:12,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:17:12,615 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 8 states. [2021-01-06 17:17:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:12,939 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2021-01-06 17:17:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:17:12,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:17:12,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:12,941 INFO L225 Difference]: With dead ends: 121 [2021-01-06 17:17:12,941 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 17:17:12,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:17:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 17:17:12,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2021-01-06 17:17:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 17:17:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2021-01-06 17:17:12,952 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 31 [2021-01-06 17:17:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:12,952 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2021-01-06 17:17:12,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:17:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2021-01-06 17:17:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:17:12,953 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:12,953 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:13,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:13,168 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:13,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:13,169 INFO L82 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2021-01-06 17:17:13,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:13,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154391401] [2021-01-06 17:17:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:13,180 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:13,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057815913] [2021-01-06 17:17:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:13,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:17:13,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:13,363 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:17:13,384 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 17:17:13,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154391401] [2021-01-06 17:17:13,385 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:13,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057815913] [2021-01-06 17:17:13,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:13,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:17:13,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721241275] [2021-01-06 17:17:13,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:17:13,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:13,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:17:13,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:17:13,387 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 8 states. [2021-01-06 17:17:13,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:13,865 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2021-01-06 17:17:13,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:17:13,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2021-01-06 17:17:13,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:13,867 INFO L225 Difference]: With dead ends: 100 [2021-01-06 17:17:13,867 INFO L226 Difference]: Without dead ends: 98 [2021-01-06 17:17:13,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:17:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-06 17:17:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-01-06 17:17:13,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 17:17:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2021-01-06 17:17:13,884 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 33 [2021-01-06 17:17:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:13,884 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2021-01-06 17:17:13,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:17:13,884 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2021-01-06 17:17:13,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:17:13,892 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:13,892 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:14,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:17:14,106 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:14,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:14,107 INFO L82 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2021-01-06 17:17:14,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:14,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729114823] [2021-01-06 17:17:14,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:14,120 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:14,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680475410] [2021-01-06 17:17:14,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:14,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:17:14,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:14,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-06 17:17:14,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:14,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729114823] [2021-01-06 17:17:14,355 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:14,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680475410] [2021-01-06 17:17:14,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:14,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:17:14,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497887688] [2021-01-06 17:17:14,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:17:14,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:14,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:17:14,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:17:14,358 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 10 states. [2021-01-06 17:17:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:14,630 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2021-01-06 17:17:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:17:14,631 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2021-01-06 17:17:14,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:14,632 INFO L225 Difference]: With dead ends: 111 [2021-01-06 17:17:14,632 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 17:17:14,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:17:14,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 17:17:14,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2021-01-06 17:17:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 17:17:14,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2021-01-06 17:17:14,640 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 33 [2021-01-06 17:17:14,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:14,641 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2021-01-06 17:17:14,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:17:14,641 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2021-01-06 17:17:14,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 17:17:14,642 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:14,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:14,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:14,856 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:14,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:14,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2021-01-06 17:17:14,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:14,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803494387] [2021-01-06 17:17:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:14,872 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:14,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830256284] [2021-01-06 17:17:14,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:15,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:17:15,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:15,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:17:15,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:15,192 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:17:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:15,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803494387] [2021-01-06 17:17:15,216 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:15,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830256284] [2021-01-06 17:17:15,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:15,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:17:15,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765076179] [2021-01-06 17:17:15,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:17:15,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:15,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:17:15,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:17:15,224 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 9 states. [2021-01-06 17:17:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:15,697 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-01-06 17:17:15,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:17:15,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2021-01-06 17:17:15,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:15,699 INFO L225 Difference]: With dead ends: 88 [2021-01-06 17:17:15,699 INFO L226 Difference]: Without dead ends: 86 [2021-01-06 17:17:15,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:17:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-01-06 17:17:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-01-06 17:17:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 17:17:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2021-01-06 17:17:15,706 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 42 [2021-01-06 17:17:15,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:15,707 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2021-01-06 17:17:15,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:17:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2021-01-06 17:17:15,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 17:17:15,708 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:15,708 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:15,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:15,922 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:15,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1748370537, now seen corresponding path program 3 times [2021-01-06 17:17:15,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:15,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650113982] [2021-01-06 17:17:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:15,935 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:15,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453468114] [2021-01-06 17:17:15,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:16,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:17:16,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:16,050 WARN L261 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-06 17:17:16,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:16,070 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:17:16,435 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-01-06 17:17:44,628 WARN L197 SmtUtils]: Spent 19.86 s on a formula simplification that was a NOOP. DAG size: 38 [2021-01-06 17:17:53,320 WARN L197 SmtUtils]: Spent 4.57 s on a formula simplification that was a NOOP. DAG size: 30 [2021-01-06 17:18:12,839 WARN L197 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 34 [2021-01-06 17:20:35,969 WARN L197 SmtUtils]: Spent 2.26 m on a formula simplification that was a NOOP. DAG size: 47 [2021-01-06 17:21:00,809 WARN L197 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 39 [2021-01-06 17:21:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-06 17:21:05,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650113982] [2021-01-06 17:21:05,045 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:05,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453468114] [2021-01-06 17:21:05,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:05,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:21:05,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754158379] [2021-01-06 17:21:05,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:21:05,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:05,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:21:05,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=144, Unknown=25, NotChecked=0, Total=210 [2021-01-06 17:21:05,047 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 15 states. [2021-01-06 17:21:29,942 WARN L197 SmtUtils]: Spent 24.79 s on a formula simplification. DAG size of input: 74 DAG size of output: 68