/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/hard-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:51:48,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:51:48,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:51:48,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:51:48,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:51:48,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:51:48,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:51:48,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:51:48,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:51:48,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:51:48,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:51:48,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:51:48,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:51:48,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:51:48,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:51:48,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:51:48,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:51:48,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:51:48,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:51:48,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:51:48,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:51:48,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:51:48,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:51:48,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:51:48,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:51:48,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:51:48,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:51:48,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:51:48,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:51:48,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:51:48,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:51:48,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:51:48,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:51:48,325 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:51:48,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:51:48,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:51:48,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:51:48,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:51:48,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:51:48,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:51:48,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:51:48,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:51:48,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:51:48,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:51:48,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:51:48,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:51:48,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:51:48,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:51:48,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:51:48,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:51:48,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:51:48,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:51:48,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:51:48,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:51:48,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:51:48,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:51:48,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:51:48,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:51:48,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:51:48,852 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:51:48,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c [2020-12-23 07:51:48,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e875ce5d2/ce3ddbb5376745d48ed9e90559695d6e/FLAGee3d688a5 [2020-12-23 07:51:49,662 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:51:49,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c [2020-12-23 07:51:49,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e875ce5d2/ce3ddbb5376745d48ed9e90559695d6e/FLAGee3d688a5 [2020-12-23 07:51:50,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e875ce5d2/ce3ddbb5376745d48ed9e90559695d6e [2020-12-23 07:51:50,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:51:50,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:51:50,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:51:50,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:51:50,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:51:50,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:51:50" (1/1) ... [2020-12-23 07:51:50,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c45bd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50, skipping insertion in model container [2020-12-23 07:51:50,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:51:50" (1/1) ... [2020-12-23 07:51:50,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:51:50,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:51:50,351 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/hard-ll_unwindbound5.c[538,551] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:51:50,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:51:50,410 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:51:50,435 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/hard-ll_unwindbound5.c[538,551] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:51:50,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:51:50,467 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:51:50,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50 WrapperNode [2020-12-23 07:51:50,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:51:50,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:51:50,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:51:50,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:51:50,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50" (1/1) ... [2020-12-23 07:51:50,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50" (1/1) ... [2020-12-23 07:51:50,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:51:50,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:51:50,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:51:50,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:51:50,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50" (1/1) ... [2020-12-23 07:51:50,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50" (1/1) ... [2020-12-23 07:51:50,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50" (1/1) ... [2020-12-23 07:51:50,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50" (1/1) ... [2020-12-23 07:51:50,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50" (1/1) ... [2020-12-23 07:51:50,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50" (1/1) ... [2020-12-23 07:51:50,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50" (1/1) ... [2020-12-23 07:51:50,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:51:50,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:51:50,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:51:50,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:51:50,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:51:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:51:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:51:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:51:50,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:51:51,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:51:51,457 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-23 07:51:51,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:51:51 BoogieIcfgContainer [2020-12-23 07:51:51,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:51:51,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:51:51,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:51:51,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:51:51,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:51:50" (1/3) ... [2020-12-23 07:51:51,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48eb6b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:51:51, skipping insertion in model container [2020-12-23 07:51:51,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:50" (2/3) ... [2020-12-23 07:51:51,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48eb6b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:51:51, skipping insertion in model container [2020-12-23 07:51:51,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:51:51" (3/3) ... [2020-12-23 07:51:51,480 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound5.c [2020-12-23 07:51:51,489 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:51:51,497 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:51:51,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:51:51,576 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:51:51,576 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:51:51,577 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:51:51,577 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:51:51,577 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:51:51,577 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:51:51,577 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:51:51,577 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:51:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 07:51:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:51:51,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:51,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:51,608 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:51,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:51,617 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-23 07:51:51,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:51,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159237329] [2020-12-23 07:51:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:51,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159237329] [2020-12-23 07:51:51,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:51,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:51:51,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133842987] [2020-12-23 07:51:51,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:51:51,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:51,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:51:51,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:51:51,858 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 07:51:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:51,888 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-23 07:51:51,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:51:51,890 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 07:51:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:51,903 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:51:51,904 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:51:51,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:51:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:51:51,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:51:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:51:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 07:51:51,961 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-23 07:51:51,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:51,961 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 07:51:51,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:51:51,962 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 07:51:51,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:51:51,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:51,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:51,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:51:51,963 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:51,965 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-23 07:51:51,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:51,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188822615] [2020-12-23 07:51:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:52,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188822615] [2020-12-23 07:51:52,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:52,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:51:52,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240790640] [2020-12-23 07:51:52,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:51:52,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:52,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:51:52,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:51:52,076 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-23 07:51:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:52,197 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-23 07:51:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:51:52,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 07:51:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:52,200 INFO L225 Difference]: With dead ends: 61 [2020-12-23 07:51:52,200 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:51:52,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:51:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:51:52,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-23 07:51:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:51:52,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:51:52,211 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-23 07:51:52,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:52,211 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:51:52,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:51:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:51:52,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:51:52,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:52,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:52,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:51:52,213 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:52,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:52,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-23 07:51:52,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:52,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527741534] [2020-12-23 07:51:52,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:52,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527741534] [2020-12-23 07:51:52,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:52,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:51:52,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138506157] [2020-12-23 07:51:52,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:51:52,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:52,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:51:52,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:51:52,330 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-23 07:51:52,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:52,369 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-23 07:51:52,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:51:52,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 07:51:52,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:52,373 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:51:52,373 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:51:52,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:51:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:51:52,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:51:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:51:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 07:51:52,394 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-23 07:51:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:52,395 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 07:51:52,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:51:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 07:51:52,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:51:52,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:52,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:52,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:51:52,402 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:52,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:52,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-23 07:51:52,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:52,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668006376] [2020-12-23 07:51:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:52,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668006376] [2020-12-23 07:51:52,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:52,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:51:52,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644467928] [2020-12-23 07:51:52,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:51:52,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:52,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:51:52,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:51:52,497 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-23 07:51:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:52,598 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-23 07:51:52,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:51:52,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 07:51:52,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:52,603 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:51:52,603 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:51:52,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:51:52,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:51:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:51:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:51:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:51:52,619 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-23 07:51:52,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:52,624 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:51:52,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:51:52,624 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:51:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:51:52,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:52,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:52,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 07:51:52,626 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:52,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:52,629 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-23 07:51:52,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:52,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622450969] [2020-12-23 07:51:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:52,677 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:52,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855602528] [2020-12-23 07:51:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:52,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:51:52,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:52,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622450969] [2020-12-23 07:51:52,922 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:52,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855602528] [2020-12-23 07:51:52,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:52,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:51:52,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339618010] [2020-12-23 07:51:52,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:51:52,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:52,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:51:52,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:52,924 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-23 07:51:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:53,072 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-23 07:51:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:51:53,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 07:51:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:53,074 INFO L225 Difference]: With dead ends: 81 [2020-12-23 07:51:53,074 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 07:51:53,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:51:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 07:51:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-23 07:51:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:51:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-23 07:51:53,086 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-23 07:51:53,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:53,086 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-23 07:51:53,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:51:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-23 07:51:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:51:53,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:53,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:53,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:53,303 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:53,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:53,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-23 07:51:53,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:53,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512994221] [2020-12-23 07:51:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:53,331 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:53,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692484924] [2020-12-23 07:51:53,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:53,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:51:53,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:53,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512994221] [2020-12-23 07:51:53,555 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:53,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692484924] [2020-12-23 07:51:53,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:53,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:51:53,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494445229] [2020-12-23 07:51:53,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:51:53,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:53,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:51:53,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:51:53,558 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-23 07:51:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:53,917 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-23 07:51:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:51:53,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-23 07:51:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:53,919 INFO L225 Difference]: With dead ends: 53 [2020-12-23 07:51:53,919 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 07:51:53,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:51:53,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 07:51:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-23 07:51:53,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 07:51:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-23 07:51:53,927 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-23 07:51:53,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:53,928 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-23 07:51:53,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:51:53,928 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-23 07:51:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:51:53,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:53,929 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:54,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:54,143 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:54,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-23 07:51:54,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:54,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008303676] [2020-12-23 07:51:54,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:54,160 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:54,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410614666] [2020-12-23 07:51:54,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:54,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:51:54,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:54,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008303676] [2020-12-23 07:51:54,284 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:54,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410614666] [2020-12-23 07:51:54,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:54,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:51:54,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912166577] [2020-12-23 07:51:54,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:51:54,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:54,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:51:54,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:51:54,286 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-23 07:51:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:54,317 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-23 07:51:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:51:54,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 07:51:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:54,319 INFO L225 Difference]: With dead ends: 62 [2020-12-23 07:51:54,319 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 07:51:54,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 07:51:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-23 07:51:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 07:51:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-23 07:51:54,328 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-23 07:51:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:54,328 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-23 07:51:54,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:51:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-23 07:51:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:51:54,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:54,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:54,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:54,544 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:54,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:54,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-23 07:51:54,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:54,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364626425] [2020-12-23 07:51:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:54,558 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:54,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188772182] [2020-12-23 07:51:54,558 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:54,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 07:51:54,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:54,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364626425] [2020-12-23 07:51:54,782 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:54,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188772182] [2020-12-23 07:51:54,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:54,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:51:54,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690774637] [2020-12-23 07:51:54,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:51:54,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:54,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:51:54,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:51:54,784 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 9 states. [2020-12-23 07:51:55,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:55,207 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2020-12-23 07:51:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:51:55,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-12-23 07:51:55,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:55,209 INFO L225 Difference]: With dead ends: 106 [2020-12-23 07:51:55,209 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 07:51:55,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:51:55,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 07:51:55,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2020-12-23 07:51:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 07:51:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-23 07:51:55,221 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 20 [2020-12-23 07:51:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:55,221 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-23 07:51:55,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:51:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-23 07:51:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 07:51:55,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:55,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:55,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:55,438 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:55,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-23 07:51:55,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:55,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79972607] [2020-12-23 07:51:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:55,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:55,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489232985] [2020-12-23 07:51:55,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:55,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:51:55,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:55,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79972607] [2020-12-23 07:51:55,751 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:55,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489232985] [2020-12-23 07:51:55,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:55,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:51:55,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311802243] [2020-12-23 07:51:55,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:51:55,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:55,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:51:55,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:51:55,754 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 8 states. [2020-12-23 07:51:56,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:56,488 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-12-23 07:51:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:51:56,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-12-23 07:51:56,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:56,490 INFO L225 Difference]: With dead ends: 74 [2020-12-23 07:51:56,490 INFO L226 Difference]: Without dead ends: 62 [2020-12-23 07:51:56,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:51:56,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-23 07:51:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-12-23 07:51:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 07:51:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-12-23 07:51:56,512 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 24 [2020-12-23 07:51:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:56,514 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-12-23 07:51:56,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:51:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-12-23 07:51:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 07:51:56,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:56,517 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:56,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:56,717 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:56,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:56,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1637703955, now seen corresponding path program 2 times [2020-12-23 07:51:56,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:56,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101860645] [2020-12-23 07:51:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:56,750 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:56,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417225847] [2020-12-23 07:51:56,751 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:56,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:51:56,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:51:56,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 07:51:56,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 07:51:56,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101860645] [2020-12-23 07:51:56,857 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:56,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417225847] [2020-12-23 07:51:56,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:56,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:51:56,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604002587] [2020-12-23 07:51:56,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:51:56,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:56,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:51:56,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:51:56,859 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 5 states. [2020-12-23 07:51:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:56,902 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-12-23 07:51:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:51:56,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-23 07:51:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:56,904 INFO L225 Difference]: With dead ends: 87 [2020-12-23 07:51:56,904 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 07:51:56,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 07:51:56,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-12-23 07:51:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-23 07:51:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-12-23 07:51:56,915 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 26 [2020-12-23 07:51:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:56,915 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-12-23 07:51:56,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:51:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-12-23 07:51:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:51:56,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:56,916 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:57,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:57,132 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:57,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:57,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-23 07:51:57,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:57,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807002429] [2020-12-23 07:51:57,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:57,147 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:57,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904048224] [2020-12-23 07:51:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:57,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:51:57,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:57,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807002429] [2020-12-23 07:51:57,282 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:57,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904048224] [2020-12-23 07:51:57,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:57,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:51:57,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859295485] [2020-12-23 07:51:57,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:51:57,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:57,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:51:57,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:57,284 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 6 states. [2020-12-23 07:51:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:57,309 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-12-23 07:51:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:51:57,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-23 07:51:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:57,311 INFO L225 Difference]: With dead ends: 65 [2020-12-23 07:51:57,311 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:51:57,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:57,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:51:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-12-23 07:51:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 07:51:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-12-23 07:51:57,320 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 27 [2020-12-23 07:51:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:57,320 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-12-23 07:51:57,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:51:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-12-23 07:51:57,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:51:57,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:57,322 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:57,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:57,536 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:57,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:57,537 INFO L82 PathProgramCache]: Analyzing trace with hash -770811653, now seen corresponding path program 1 times [2020-12-23 07:51:57,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:57,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362029201] [2020-12-23 07:51:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:57,547 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:57,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707802099] [2020-12-23 07:51:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:57,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:51:57,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:57,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362029201] [2020-12-23 07:51:57,664 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:57,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707802099] [2020-12-23 07:51:57,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:57,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:51:57,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069020678] [2020-12-23 07:51:57,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:51:57,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:57,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:51:57,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:57,666 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2020-12-23 07:51:57,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:57,708 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-12-23 07:51:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:51:57,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-23 07:51:57,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:57,710 INFO L225 Difference]: With dead ends: 70 [2020-12-23 07:51:57,710 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 07:51:57,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:51:57,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 07:51:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-23 07:51:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-23 07:51:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-12-23 07:51:57,718 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 27 [2020-12-23 07:51:57,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:57,719 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-12-23 07:51:57,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:51:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-12-23 07:51:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 07:51:57,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:57,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:57,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:51:57,935 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:57,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:57,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-23 07:51:57,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:57,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120000955] [2020-12-23 07:51:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:57,957 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:57,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432874961] [2020-12-23 07:51:57,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:58,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:51:58,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:51:58,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-23 07:51:58,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:58,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120000955] [2020-12-23 07:51:58,440 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:58,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432874961] [2020-12-23 07:51:58,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:58,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:51:58,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585577713] [2020-12-23 07:51:58,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:51:58,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:58,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:51:58,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:51:58,442 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 12 states. [2020-12-23 07:52:01,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:01,943 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2020-12-23 07:52:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:52:01,944 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-12-23 07:52:01,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:01,945 INFO L225 Difference]: With dead ends: 119 [2020-12-23 07:52:01,945 INFO L226 Difference]: Without dead ends: 107 [2020-12-23 07:52:01,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:52:01,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-23 07:52:01,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 79. [2020-12-23 07:52:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-23 07:52:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2020-12-23 07:52:01,961 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 28 [2020-12-23 07:52:01,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:01,962 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2020-12-23 07:52:01,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:52:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2020-12-23 07:52:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:52:01,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:01,963 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:02,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:02,178 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:02,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-23 07:52:02,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:02,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524546125] [2020-12-23 07:52:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:02,191 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:02,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593164955] [2020-12-23 07:52:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:02,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:52:02,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:02,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524546125] [2020-12-23 07:52:02,657 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:02,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593164955] [2020-12-23 07:52:02,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:02,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:52:02,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500329981] [2020-12-23 07:52:02,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:52:02,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:02,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:52:02,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:52:02,659 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 10 states. [2020-12-23 07:52:03,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:03,516 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-12-23 07:52:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:52:03,517 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 07:52:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:03,519 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:52:03,519 INFO L226 Difference]: Without dead ends: 99 [2020-12-23 07:52:03,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:52:03,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-23 07:52:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2020-12-23 07:52:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 07:52:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2020-12-23 07:52:03,534 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 31 [2020-12-23 07:52:03,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:03,534 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2020-12-23 07:52:03,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:52:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2020-12-23 07:52:03,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:52:03,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:03,535 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:03,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:03,749 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:03,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1414538084, now seen corresponding path program 1 times [2020-12-23 07:52:03,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:03,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698415573] [2020-12-23 07:52:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:03,761 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:03,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218319187] [2020-12-23 07:52:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:03,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:52:03,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:03,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698415573] [2020-12-23 07:52:03,910 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:03,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218319187] [2020-12-23 07:52:03,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:03,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:52:03,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678742237] [2020-12-23 07:52:03,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:52:03,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:03,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:52:03,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:52:03,919 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand 7 states. [2020-12-23 07:52:03,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:03,973 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2020-12-23 07:52:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:52:03,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-23 07:52:03,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:03,975 INFO L225 Difference]: With dead ends: 97 [2020-12-23 07:52:03,975 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 07:52:03,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:52:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 07:52:03,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-12-23 07:52:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 07:52:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-12-23 07:52:03,988 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 32 [2020-12-23 07:52:03,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:03,988 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-12-23 07:52:03,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:52:03,989 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-12-23 07:52:03,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:52:03,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:03,990 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:04,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:52:04,205 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:04,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:04,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1150939168, now seen corresponding path program 2 times [2020-12-23 07:52:04,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:04,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725259017] [2020-12-23 07:52:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:04,218 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:04,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737087332] [2020-12-23 07:52:04,219 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:04,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:52:04,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:52:04,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 07:52:04,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-23 07:52:04,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725259017] [2020-12-23 07:52:04,417 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:04,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737087332] [2020-12-23 07:52:04,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:52:04,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:52:04,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452875818] [2020-12-23 07:52:04,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:52:04,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:04,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:52:04,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:52:04,420 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 7 states. [2020-12-23 07:52:04,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:04,684 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2020-12-23 07:52:04,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:52:04,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-23 07:52:04,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:04,687 INFO L225 Difference]: With dead ends: 113 [2020-12-23 07:52:04,687 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 07:52:04,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:52:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 07:52:04,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-12-23 07:52:04,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-23 07:52:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2020-12-23 07:52:04,708 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 32 [2020-12-23 07:52:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:04,709 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2020-12-23 07:52:04,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:52:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2020-12-23 07:52:04,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:52:04,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:04,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:04,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:52:04,927 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash -900022411, now seen corresponding path program 1 times [2020-12-23 07:52:04,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:04,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432342726] [2020-12-23 07:52:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:04,944 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:04,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747912826] [2020-12-23 07:52:04,945 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:05,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:52:05,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:05,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432342726] [2020-12-23 07:52:05,304 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:05,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747912826] [2020-12-23 07:52:05,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:05,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:52:05,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996517680] [2020-12-23 07:52:05,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:52:05,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:05,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:52:05,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:52:05,310 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand 9 states. [2020-12-23 07:52:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:05,859 INFO L93 Difference]: Finished difference Result 132 states and 154 transitions. [2020-12-23 07:52:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:52:05,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-23 07:52:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:05,861 INFO L225 Difference]: With dead ends: 132 [2020-12-23 07:52:05,861 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 07:52:05,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:52:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 07:52:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-12-23 07:52:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-23 07:52:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-12-23 07:52:05,874 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 33 [2020-12-23 07:52:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:05,875 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-12-23 07:52:05,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:52:05,875 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-12-23 07:52:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:52:05,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:05,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:06,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:52:06,091 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:06,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:06,092 INFO L82 PathProgramCache]: Analyzing trace with hash 918142130, now seen corresponding path program 1 times [2020-12-23 07:52:06,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:06,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327295369] [2020-12-23 07:52:06,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:06,100 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:06,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728971398] [2020-12-23 07:52:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:52:06,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:52:06,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:52:06,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327295369] [2020-12-23 07:52:06,415 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:06,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728971398] [2020-12-23 07:52:06,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:06,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:52:06,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350712234] [2020-12-23 07:52:06,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:52:06,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:06,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:52:06,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:52:06,420 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 10 states. [2020-12-23 07:52:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:07,428 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2020-12-23 07:52:07,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:52:07,429 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-12-23 07:52:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:07,430 INFO L225 Difference]: With dead ends: 154 [2020-12-23 07:52:07,430 INFO L226 Difference]: Without dead ends: 137 [2020-12-23 07:52:07,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:52:07,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-23 07:52:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 93. [2020-12-23 07:52:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-23 07:52:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2020-12-23 07:52:07,441 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 36 [2020-12-23 07:52:07,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:07,442 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2020-12-23 07:52:07,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:52:07,442 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2020-12-23 07:52:07,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:52:07,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:52:07,443 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 07:52:07,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:07,665 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:52:07,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:52:07,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1625393032, now seen corresponding path program 3 times [2020-12-23 07:52:07,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:52:07,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489431125] [2020-12-23 07:52:07,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:52:07,676 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:52:07,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107046866] [2020-12-23 07:52:07,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:52:07,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:52:07,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:52:07,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 07:52:07,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:52:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 07:52:09,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489431125] [2020-12-23 07:52:09,986 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:52:09,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107046866] [2020-12-23 07:52:09,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:52:09,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:52:09,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467607973] [2020-12-23 07:52:09,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:52:09,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:52:09,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:52:09,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2020-12-23 07:52:09,988 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand 7 states. [2020-12-23 07:53:21,888 WARN L197 SmtUtils]: Spent 16.17 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-12-23 07:54:06,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:06,425 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2020-12-23 07:54:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:54:06,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-12-23 07:54:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:06,524 INFO L225 Difference]: With dead ends: 128 [2020-12-23 07:54:06,524 INFO L226 Difference]: Without dead ends: 124 [2020-12-23 07:54:06,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 50.3s TimeCoverageRelationStatistics Valid=63, Invalid=131, Unknown=16, NotChecked=0, Total=210 [2020-12-23 07:54:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-23 07:54:06,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 96. [2020-12-23 07:54:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:54:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2020-12-23 07:54:06,540 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 36 [2020-12-23 07:54:06,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:06,540 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2020-12-23 07:54:06,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:54:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2020-12-23 07:54:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:54:06,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:06,541 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:06,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:06,755 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:06,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:06,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1658895220, now seen corresponding path program 1 times [2020-12-23 07:54:06,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:06,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977879446] [2020-12-23 07:54:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:06,765 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:06,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524828472] [2020-12-23 07:54:06,765 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:06,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:54:06,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:06,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977879446] [2020-12-23 07:54:06,908 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:06,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524828472] [2020-12-23 07:54:06,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:06,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:54:06,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102247496] [2020-12-23 07:54:06,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:54:06,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:06,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:54:06,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:54:06,910 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand 7 states. [2020-12-23 07:54:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:06,997 INFO L93 Difference]: Finished difference Result 106 states and 124 transitions. [2020-12-23 07:54:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:54:06,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-23 07:54:06,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:06,999 INFO L225 Difference]: With dead ends: 106 [2020-12-23 07:54:06,999 INFO L226 Difference]: Without dead ends: 98 [2020-12-23 07:54:06,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:54:06,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-23 07:54:07,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-12-23 07:54:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 07:54:07,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2020-12-23 07:54:07,010 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 37 [2020-12-23 07:54:07,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:07,011 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2020-12-23 07:54:07,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:54:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2020-12-23 07:54:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:54:07,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:07,012 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:07,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:07,227 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:07,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:07,227 INFO L82 PathProgramCache]: Analyzing trace with hash 406136064, now seen corresponding path program 2 times [2020-12-23 07:54:07,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:07,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123033577] [2020-12-23 07:54:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:07,237 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:07,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922588068] [2020-12-23 07:54:07,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:07,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:54:07,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:07,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 07:54:07,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:07,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123033577] [2020-12-23 07:54:07,995 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:07,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922588068] [2020-12-23 07:54:07,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:07,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:54:07,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819449157] [2020-12-23 07:54:07,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:54:07,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:07,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:54:07,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:54:07,997 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand 13 states. [2020-12-23 07:54:09,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:09,339 INFO L93 Difference]: Finished difference Result 150 states and 181 transitions. [2020-12-23 07:54:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:54:09,342 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-12-23 07:54:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:09,342 INFO L225 Difference]: With dead ends: 150 [2020-12-23 07:54:09,343 INFO L226 Difference]: Without dead ends: 110 [2020-12-23 07:54:09,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-12-23 07:54:09,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-23 07:54:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 99. [2020-12-23 07:54:09,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-23 07:54:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2020-12-23 07:54:09,355 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 39 [2020-12-23 07:54:09,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:09,356 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2020-12-23 07:54:09,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:54:09,356 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2020-12-23 07:54:09,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 07:54:09,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:09,357 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:09,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 07:54:09,571 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:09,572 INFO L82 PathProgramCache]: Analyzing trace with hash -294710610, now seen corresponding path program 2 times [2020-12-23 07:54:09,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:09,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573185817] [2020-12-23 07:54:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:09,582 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:09,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061809282] [2020-12-23 07:54:09,583 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:09,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:54:09,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:09,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:54:09,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:09,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573185817] [2020-12-23 07:54:09,758 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:09,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061809282] [2020-12-23 07:54:09,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:09,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:54:09,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447804577] [2020-12-23 07:54:09,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:54:09,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:09,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:54:09,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:54:09,760 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 8 states. [2020-12-23 07:54:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:09,824 INFO L93 Difference]: Finished difference Result 118 states and 138 transitions. [2020-12-23 07:54:09,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:54:09,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-12-23 07:54:09,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:09,826 INFO L225 Difference]: With dead ends: 118 [2020-12-23 07:54:09,826 INFO L226 Difference]: Without dead ends: 108 [2020-12-23 07:54:09,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:54:09,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-23 07:54:09,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-12-23 07:54:09,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-23 07:54:09,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2020-12-23 07:54:09,839 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 40 [2020-12-23 07:54:09,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:09,839 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2020-12-23 07:54:09,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:54:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2020-12-23 07:54:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:54:09,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:09,840 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:10,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:54:10,048 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:10,049 INFO L82 PathProgramCache]: Analyzing trace with hash 2116618682, now seen corresponding path program 2 times [2020-12-23 07:54:10,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:10,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959632801] [2020-12-23 07:54:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:10,058 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:10,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189103068] [2020-12-23 07:54:10,058 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:10,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:54:10,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:10,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:54:10,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:10,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959632801] [2020-12-23 07:54:10,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:10,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189103068] [2020-12-23 07:54:10,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:10,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:54:10,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031317239] [2020-12-23 07:54:10,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:54:10,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:10,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:54:10,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:54:10,243 INFO L87 Difference]: Start difference. First operand 107 states and 126 transitions. Second operand 8 states. [2020-12-23 07:54:10,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:10,363 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2020-12-23 07:54:10,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:54:10,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-12-23 07:54:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:10,365 INFO L225 Difference]: With dead ends: 117 [2020-12-23 07:54:10,365 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 07:54:10,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:54:10,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 07:54:10,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-23 07:54:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 07:54:10,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2020-12-23 07:54:10,377 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 45 [2020-12-23 07:54:10,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:10,378 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2020-12-23 07:54:10,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:54:10,378 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2020-12-23 07:54:10,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:54:10,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:10,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:10,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 07:54:10,595 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:10,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1302416352, now seen corresponding path program 3 times [2020-12-23 07:54:10,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:10,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681578056] [2020-12-23 07:54:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:10,605 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:10,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783001038] [2020-12-23 07:54:10,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:10,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:54:10,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:10,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 07:54:10,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:10,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681578056] [2020-12-23 07:54:10,885 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:10,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783001038] [2020-12-23 07:54:10,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:10,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:54:10,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018747669] [2020-12-23 07:54:10,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:54:10,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:10,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:54:10,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:54:10,887 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand 9 states. [2020-12-23 07:54:10,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:10,964 INFO L93 Difference]: Finished difference Result 133 states and 158 transitions. [2020-12-23 07:54:10,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:54:10,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-12-23 07:54:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:10,966 INFO L225 Difference]: With dead ends: 133 [2020-12-23 07:54:10,966 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 07:54:10,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:54:10,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 07:54:10,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2020-12-23 07:54:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:54:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-12-23 07:54:10,977 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 46 [2020-12-23 07:54:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:10,977 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-12-23 07:54:10,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:54:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-12-23 07:54:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 07:54:10,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:10,978 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:11,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 07:54:11,192 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:11,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:11,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1720227954, now seen corresponding path program 3 times [2020-12-23 07:54:11,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:11,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144366036] [2020-12-23 07:54:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:11,203 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:11,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713771805] [2020-12-23 07:54:11,204 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:11,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:54:11,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:11,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 53 conjunts are in the unsatisfiable core [2020-12-23 07:54:11,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:11,790 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-12-23 07:54:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:12,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144366036] [2020-12-23 07:54:12,236 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:12,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713771805] [2020-12-23 07:54:12,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:12,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-23 07:54:12,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091777430] [2020-12-23 07:54:12,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 07:54:12,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:12,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 07:54:12,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:54:12,237 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 14 states. [2020-12-23 07:54:13,303 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-12-23 07:54:13,630 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-23 07:54:13,806 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-23 07:54:14,124 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-12-23 07:54:14,320 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-12-23 07:54:14,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:14,345 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-12-23 07:54:14,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:54:14,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-12-23 07:54:14,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:14,352 INFO L225 Difference]: With dead ends: 99 [2020-12-23 07:54:14,353 INFO L226 Difference]: Without dead ends: 97 [2020-12-23 07:54:14,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:54:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-23 07:54:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2020-12-23 07:54:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:54:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-12-23 07:54:14,367 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 47 [2020-12-23 07:54:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:14,368 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-12-23 07:54:14,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 07:54:14,368 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-12-23 07:54:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 07:54:14,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:14,368 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:14,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 07:54:14,584 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:14,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:14,584 INFO L82 PathProgramCache]: Analyzing trace with hash -621656459, now seen corresponding path program 1 times [2020-12-23 07:54:14,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:14,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921643921] [2020-12-23 07:54:14,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:14,598 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:14,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127617418] [2020-12-23 07:54:14,599 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:14,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:54:14,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:14,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921643921] [2020-12-23 07:54:14,774 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:14,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127617418] [2020-12-23 07:54:14,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:14,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:54:14,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670690786] [2020-12-23 07:54:14,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:54:14,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:14,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:54:14,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:14,778 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 6 states. [2020-12-23 07:54:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:14,877 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2020-12-23 07:54:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:54:14,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-12-23 07:54:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:14,879 INFO L225 Difference]: With dead ends: 103 [2020-12-23 07:54:14,879 INFO L226 Difference]: Without dead ends: 97 [2020-12-23 07:54:14,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:14,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-23 07:54:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2020-12-23 07:54:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:54:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2020-12-23 07:54:14,891 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 47 [2020-12-23 07:54:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:14,892 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2020-12-23 07:54:14,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:54:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2020-12-23 07:54:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 07:54:14,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:14,892 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:15,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:15,106 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:15,107 INFO L82 PathProgramCache]: Analyzing trace with hash -563603776, now seen corresponding path program 4 times [2020-12-23 07:54:15,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:15,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973372457] [2020-12-23 07:54:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:15,115 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:15,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986795158] [2020-12-23 07:54:15,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:15,259 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:54:15,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-23 07:54:15,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:54:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:54:15,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:54:15,402 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 07:54:15,402 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:54:15,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 07:54:15,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:54:15 BoogieIcfgContainer [2020-12-23 07:54:15,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:54:15,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:54:15,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:54:15,674 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:54:15,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:51:51" (3/4) ... [2020-12-23 07:54:15,676 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 07:54:15,772 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/hard-ll_unwindbound5.c-witness.graphml [2020-12-23 07:54:15,772 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:54:15,776 INFO L168 Benchmark]: Toolchain (without parser) took 145761.36 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 156.2 MB in the beginning and 189.2 MB in the end (delta: -33.0 MB). Peak memory consumption was 124.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:15,777 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 175.1 MB. Free memory is still 146.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:54:15,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.27 ms. Allocated memory is still 175.1 MB. Free memory was 156.2 MB in the beginning and 146.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:15,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.37 ms. Allocated memory is still 175.1 MB. Free memory was 146.0 MB in the beginning and 144.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:15,778 INFO L168 Benchmark]: Boogie Preprocessor took 111.52 ms. Allocated memory is still 175.1 MB. Free memory was 144.3 MB in the beginning and 157.5 MB in the end (delta: -13.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:15,778 INFO L168 Benchmark]: RCFGBuilder took 825.87 ms. Allocated memory is still 175.1 MB. Free memory was 157.5 MB in the beginning and 140.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:15,779 INFO L168 Benchmark]: TraceAbstraction took 144209.07 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 140.3 MB in the beginning and 71.3 MB in the end (delta: 69.0 MB). Peak memory consumption was 106.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:15,779 INFO L168 Benchmark]: Witness Printer took 98.68 ms. Allocated memory is still 210.8 MB. Free memory was 71.3 MB in the beginning and 189.2 MB in the end (delta: -117.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:15,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 175.1 MB. Free memory is still 146.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 451.27 ms. Allocated memory is still 175.1 MB. Free memory was 156.2 MB in the beginning and 146.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.37 ms. Allocated memory is still 175.1 MB. Free memory was 146.0 MB in the beginning and 144.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.52 ms. Allocated memory is still 175.1 MB. Free memory was 144.3 MB in the beginning and 157.5 MB in the end (delta: -13.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 825.87 ms. Allocated memory is still 175.1 MB. Free memory was 157.5 MB in the beginning and 140.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 144209.07 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 140.3 MB in the beginning and 71.3 MB in the end (delta: 69.0 MB). Peak memory consumption was 106.3 MB. Max. memory is 8.0 GB. * Witness Printer took 98.68 ms. Allocated memory is still 210.8 MB. Free memory was 71.3 MB in the beginning and 189.2 MB in the end (delta: -117.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) VAL [counter=0] [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=2] [L35] EXPR counter++ VAL [counter=3] [L35] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=3] [L35] EXPR counter++ VAL [counter=4] [L35] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND TRUE !(r >= d) VAL [counter=4] [L45] EXPR counter++ VAL [counter=5] [L45] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 VAL [counter=5] [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p VAL [counter=5] [L45] EXPR counter++ VAL [counter=6] [L45] COND FALSE !(counter++<5) [L15] COND TRUE !(cond) VAL [counter=6] [L17] reach_error() VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 144.0s, OverallIterations: 27, TraceHistogramMax: 5, AutomataDifference: 128.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 897 SDtfs, 1984 SDslu, 2370 SDs, 0 SdLazy, 2285 SolverSat, 471 SolverUnsat, 33 SolverUnknown, 0 SolverNotchecked, 72.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 806 GetRequests, 553 SyntacticMatches, 1 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 58.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 26 MinimizatonAttempts, 258 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 783 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 709 ConstructedInterpolants, 0 QuantifiedInterpolants, 248489 SizeOfPredicates, 152 NumberOfNonLiveVariables, 2776 ConjunctsInSsa, 441 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 134/447 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...