/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:17:19,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:17:19,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:17:19,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:17:19,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:17:19,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:17:19,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:17:19,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:17:19,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:17:19,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:17:19,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:17:19,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:17:19,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:17:19,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:17:19,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:17:19,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:17:19,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:17:19,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:17:19,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:17:19,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:17:19,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:17:19,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:17:19,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:17:19,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:17:19,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:17:19,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:17:19,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:17:19,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:17:19,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:17:19,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:17:19,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:17:19,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:17:19,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:17:19,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:17:19,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:17:19,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:17:19,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:17:19,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:17:19,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:17:19,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:17:19,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:17:19,669 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:17:19,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:17:19,670 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:17:19,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:17:19,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:17:19,671 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:17:19,671 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:17:19,671 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:17:19,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:17:19,672 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:17:19,672 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:17:19,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:17:19,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:17:19,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:17:19,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:17:19,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:17:19,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:17:19,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:17:19,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:17:19,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:17:19,675 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:17:20,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:17:20,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:17:20,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:17:20,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:17:20,127 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:17:20,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2020-12-22 19:17:20,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1bb08ab/0b20bebcb9994ca3ae7bb42d542e5dd5/FLAG41fe20be6 [2020-12-22 19:17:20,796 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:17:20,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2020-12-22 19:17:20,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1bb08ab/0b20bebcb9994ca3ae7bb42d542e5dd5/FLAG41fe20be6 [2020-12-22 19:17:21,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1bb08ab/0b20bebcb9994ca3ae7bb42d542e5dd5 [2020-12-22 19:17:21,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:17:21,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:17:21,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:17:21,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:17:21,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:17:21,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:17:21" (1/1) ... [2020-12-22 19:17:21,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48566339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21, skipping insertion in model container [2020-12-22 19:17:21,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:17:21" (1/1) ... [2020-12-22 19:17:21,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:17:21,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:17:21,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:17:21,446 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:17:21,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:17:21,513 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:17:21,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21 WrapperNode [2020-12-22 19:17:21,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:17:21,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:17:21,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:17:21,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:17:21,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21" (1/1) ... [2020-12-22 19:17:21,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21" (1/1) ... [2020-12-22 19:17:21,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:17:21,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:17:21,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:17:21,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:17:21,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21" (1/1) ... [2020-12-22 19:17:21,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21" (1/1) ... [2020-12-22 19:17:21,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21" (1/1) ... [2020-12-22 19:17:21,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21" (1/1) ... [2020-12-22 19:17:21,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21" (1/1) ... [2020-12-22 19:17:21,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21" (1/1) ... [2020-12-22 19:17:21,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21" (1/1) ... [2020-12-22 19:17:21,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:17:21,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:17:21,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:17:21,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:17:21,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:17:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:17:21,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:17:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:17:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:17:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:17:22,232 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:17:22,232 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-22 19:17:22,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:17:22 BoogieIcfgContainer [2020-12-22 19:17:22,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:17:22,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:17:22,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:17:22,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:17:22,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:17:21" (1/3) ... [2020-12-22 19:17:22,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2a05f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:17:22, skipping insertion in model container [2020-12-22 19:17:22,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:21" (2/3) ... [2020-12-22 19:17:22,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2a05f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:17:22, skipping insertion in model container [2020-12-22 19:17:22,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:17:22" (3/3) ... [2020-12-22 19:17:22,247 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2.c [2020-12-22 19:17:22,256 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:17:22,261 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 19:17:22,283 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 19:17:22,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:17:22,310 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:17:22,310 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:17:22,310 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:17:22,310 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:17:22,310 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:17:22,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:17:22,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:17:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-12-22 19:17:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:17:22,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:22,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:17:22,350 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:22,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:22,359 INFO L82 PathProgramCache]: Analyzing trace with hash 28698921, now seen corresponding path program 1 times [2020-12-22 19:17:22,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:22,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190742386] [2020-12-22 19:17:22,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:22,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190742386] [2020-12-22 19:17:22,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:22,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:17:22,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112922918] [2020-12-22 19:17:22,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:17:22,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:22,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:17:22,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:17:22,762 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-12-22 19:17:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:22,934 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-12-22 19:17:22,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:17:22,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-22 19:17:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:22,946 INFO L225 Difference]: With dead ends: 69 [2020-12-22 19:17:22,947 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 19:17:22,949 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 [2020-12-22 19:17:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 19:17:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-12-22 19:17:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 19:17:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-12-22 19:17:22,990 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 5 [2020-12-22 19:17:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:22,990 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-12-22 19:17:22,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:17:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-12-22 19:17:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:17:22,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:22,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:22,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:17:22,992 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:22,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:22,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1809811544, now seen corresponding path program 1 times [2020-12-22 19:17:22,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:22,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211489799] [2020-12-22 19:17:22,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:23,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211489799] [2020-12-22 19:17:23,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:23,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:17:23,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232996797] [2020-12-22 19:17:23,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:17:23,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:23,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:17:23,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:17:23,056 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-12-22 19:17:23,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:23,214 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-12-22 19:17:23,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:17:23,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-22 19:17:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:23,219 INFO L225 Difference]: With dead ends: 70 [2020-12-22 19:17:23,220 INFO L226 Difference]: Without dead ends: 70 [2020-12-22 19:17:23,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:17:23,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-22 19:17:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 41. [2020-12-22 19:17:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 19:17:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-22 19:17:23,239 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 7 [2020-12-22 19:17:23,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:23,239 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-22 19:17:23,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:17:23,239 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-22 19:17:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:17:23,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:23,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:23,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:17:23,241 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:23,245 INFO L82 PathProgramCache]: Analyzing trace with hash -489510905, now seen corresponding path program 1 times [2020-12-22 19:17:23,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:23,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021363839] [2020-12-22 19:17:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:23,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021363839] [2020-12-22 19:17:23,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:23,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:17:23,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570916363] [2020-12-22 19:17:23,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:17:23,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:23,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:17:23,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:17:23,375 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-22 19:17:23,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:23,416 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-12-22 19:17:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:17:23,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 19:17:23,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:23,418 INFO L225 Difference]: With dead ends: 75 [2020-12-22 19:17:23,418 INFO L226 Difference]: Without dead ends: 75 [2020-12-22 19:17:23,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:17:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-22 19:17:23,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 45. [2020-12-22 19:17:23,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 19:17:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-12-22 19:17:23,425 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 11 [2020-12-22 19:17:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:23,425 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-12-22 19:17:23,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:17:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-12-22 19:17:23,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:17:23,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:23,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:23,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:17:23,427 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:23,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:23,428 INFO L82 PathProgramCache]: Analyzing trace with hash -489508983, now seen corresponding path program 1 times [2020-12-22 19:17:23,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:23,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140318820] [2020-12-22 19:17:23,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:23,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140318820] [2020-12-22 19:17:23,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:23,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:17:23,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134825962] [2020-12-22 19:17:23,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:17:23,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:23,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:17:23,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:17:23,531 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 4 states. [2020-12-22 19:17:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:23,590 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-12-22 19:17:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:17:23,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 19:17:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:23,596 INFO L225 Difference]: With dead ends: 43 [2020-12-22 19:17:23,596 INFO L226 Difference]: Without dead ends: 43 [2020-12-22 19:17:23,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:17:23,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-22 19:17:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-22 19:17:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 19:17:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-12-22 19:17:23,612 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 11 [2020-12-22 19:17:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:23,612 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-12-22 19:17:23,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:17:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-12-22 19:17:23,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:17:23,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:23,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:23,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:17:23,615 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:23,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:23,617 INFO L82 PathProgramCache]: Analyzing trace with hash -489508982, now seen corresponding path program 1 times [2020-12-22 19:17:23,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:23,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553551422] [2020-12-22 19:17:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:23,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553551422] [2020-12-22 19:17:23,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:23,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:17:23,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646874679] [2020-12-22 19:17:23,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:17:23,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:23,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:17:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:17:23,760 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2020-12-22 19:17:23,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:23,865 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-12-22 19:17:23,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:17:23,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 19:17:23,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:23,866 INFO L225 Difference]: With dead ends: 50 [2020-12-22 19:17:23,867 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 19:17:23,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:17:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 19:17:23,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-12-22 19:17:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 19:17:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-12-22 19:17:23,872 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 11 [2020-12-22 19:17:23,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:23,873 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-12-22 19:17:23,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:17:23,873 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-12-22 19:17:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:17:23,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:23,874 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:23,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:17:23,875 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:23,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:23,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1675839934, now seen corresponding path program 1 times [2020-12-22 19:17:23,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:23,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66528072] [2020-12-22 19:17:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:23,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66528072] [2020-12-22 19:17:23,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:23,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:17:23,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572729337] [2020-12-22 19:17:23,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:17:23,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:23,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:17:23,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:17:23,923 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 4 states. [2020-12-22 19:17:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:23,970 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-12-22 19:17:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:17:23,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-22 19:17:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:23,971 INFO L225 Difference]: With dead ends: 47 [2020-12-22 19:17:23,971 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 19:17:23,972 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 [2020-12-22 19:17:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 19:17:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 19:17:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 19:17:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-12-22 19:17:23,976 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 16 [2020-12-22 19:17:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:23,977 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-12-22 19:17:23,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:17:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-12-22 19:17:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:17:23,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:23,979 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:23,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:17:23,980 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:23,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1675839933, now seen corresponding path program 1 times [2020-12-22 19:17:23,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:23,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858919873] [2020-12-22 19:17:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:24,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858919873] [2020-12-22 19:17:24,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943639201] [2020-12-22 19:17:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:24,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 19:17:24,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:24,536 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:24,537 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 39 [2020-12-22 19:17:24,571 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:24,580 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:17:24,585 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:24,591 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:24,630 INFO L625 ElimStorePlain]: treesize reduction 40, result has 42.0 percent of original size [2020-12-22 19:17:24,635 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:24,636 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:29 [2020-12-22 19:17:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:24,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:24,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-12-22 19:17:24,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537167364] [2020-12-22 19:17:24,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:17:24,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:24,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:17:24,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:17:24,699 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 10 states. [2020-12-22 19:17:26,703 WARN L197 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-12-22 19:17:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:26,904 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-12-22 19:17:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 19:17:26,905 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-22 19:17:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:26,906 INFO L225 Difference]: With dead ends: 90 [2020-12-22 19:17:26,906 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 19:17:26,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:17:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 19:17:26,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 48. [2020-12-22 19:17:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 19:17:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-12-22 19:17:26,913 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 16 [2020-12-22 19:17:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:26,913 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-12-22 19:17:26,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:17:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-12-22 19:17:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:17:26,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:26,915 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:27,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 19:17:27,131 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:27,132 INFO L82 PathProgramCache]: Analyzing trace with hash -411430410, now seen corresponding path program 1 times [2020-12-22 19:17:27,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:27,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717583407] [2020-12-22 19:17:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:17:27,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717583407] [2020-12-22 19:17:27,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:27,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:17:27,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190534672] [2020-12-22 19:17:27,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:17:27,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:27,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:17:27,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:17:27,179 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 3 states. [2020-12-22 19:17:27,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:27,202 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-12-22 19:17:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:17:27,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 19:17:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:27,204 INFO L225 Difference]: With dead ends: 47 [2020-12-22 19:17:27,204 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 19:17:27,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:17:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 19:17:27,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 19:17:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 19:17:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-12-22 19:17:27,209 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 17 [2020-12-22 19:17:27,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:27,209 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-12-22 19:17:27,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:17:27,210 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-12-22 19:17:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:17:27,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:27,210 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:27,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:17:27,211 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:27,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:27,212 INFO L82 PathProgramCache]: Analyzing trace with hash -411430409, now seen corresponding path program 1 times [2020-12-22 19:17:27,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:27,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237167512] [2020-12-22 19:17:27,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:27,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237167512] [2020-12-22 19:17:27,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045681507] [2020-12-22 19:17:27,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:27,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:17:27,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:27,439 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:17:27,440 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:27,449 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:27,453 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:17:27,454 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:25 [2020-12-22 19:17:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:27,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:27,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 19:17:27,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848101615] [2020-12-22 19:17:27,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:17:27,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:27,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:17:27,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:17:27,491 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-12-22 19:17:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:27,683 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-22 19:17:27,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:17:27,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-12-22 19:17:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:27,686 INFO L225 Difference]: With dead ends: 66 [2020-12-22 19:17:27,687 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 19:17:27,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:17:27,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 19:17:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2020-12-22 19:17:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 19:17:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-12-22 19:17:27,696 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 17 [2020-12-22 19:17:27,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:27,696 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-12-22 19:17:27,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:17:27,696 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-12-22 19:17:27,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:17:27,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:27,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:27,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:27,912 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:27,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:27,913 INFO L82 PathProgramCache]: Analyzing trace with hash 130511665, now seen corresponding path program 1 times [2020-12-22 19:17:27,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:27,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674653024] [2020-12-22 19:17:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:17:27,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674653024] [2020-12-22 19:17:27,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:27,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:17:27,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648420128] [2020-12-22 19:17:27,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:17:27,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:27,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:17:27,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:17:27,965 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 4 states. [2020-12-22 19:17:28,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:28,014 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-12-22 19:17:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:17:28,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-22 19:17:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:28,015 INFO L225 Difference]: With dead ends: 47 [2020-12-22 19:17:28,016 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 19:17:28,016 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 [2020-12-22 19:17:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 19:17:28,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 19:17:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 19:17:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-12-22 19:17:28,027 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 18 [2020-12-22 19:17:28,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:28,027 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-12-22 19:17:28,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:17:28,027 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-12-22 19:17:28,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:17:28,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:28,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:28,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:17:28,031 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:28,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:28,039 INFO L82 PathProgramCache]: Analyzing trace with hash 130511666, now seen corresponding path program 1 times [2020-12-22 19:17:28,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:28,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908682915] [2020-12-22 19:17:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:28,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908682915] [2020-12-22 19:17:28,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048942294] [2020-12-22 19:17:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:28,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:17:28,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:28,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:28,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-22 19:17:28,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403290921] [2020-12-22 19:17:28,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:17:28,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:28,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:17:28,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:17:28,270 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-12-22 19:17:28,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:28,373 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-12-22 19:17:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:17:28,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 19:17:28,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:28,376 INFO L225 Difference]: With dead ends: 51 [2020-12-22 19:17:28,376 INFO L226 Difference]: Without dead ends: 51 [2020-12-22 19:17:28,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:17:28,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-22 19:17:28,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2020-12-22 19:17:28,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 19:17:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-12-22 19:17:28,385 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 18 [2020-12-22 19:17:28,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:28,386 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-12-22 19:17:28,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:17:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-12-22 19:17:28,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:17:28,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:28,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:28,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 19:17:28,605 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:28,606 INFO L82 PathProgramCache]: Analyzing trace with hash 624099572, now seen corresponding path program 1 times [2020-12-22 19:17:28,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:28,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649761602] [2020-12-22 19:17:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:28,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649761602] [2020-12-22 19:17:28,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487957297] [2020-12-22 19:17:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:28,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 19:17:28,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:28,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:28,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 19:17:28,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273748785] [2020-12-22 19:17:28,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:17:28,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:28,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:17:28,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:17:28,793 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 5 states. [2020-12-22 19:17:28,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:28,835 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2020-12-22 19:17:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:17:28,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-22 19:17:28,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:28,838 INFO L225 Difference]: With dead ends: 78 [2020-12-22 19:17:28,838 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 19:17:28,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:17:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 19:17:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2020-12-22 19:17:28,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:17:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-22 19:17:28,856 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 20 [2020-12-22 19:17:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:28,857 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-22 19:17:28,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:17:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-22 19:17:28,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:17:28,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:28,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:29,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:29,073 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:29,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:29,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1752050598, now seen corresponding path program 1 times [2020-12-22 19:17:29,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:29,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081939384] [2020-12-22 19:17:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:29,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081939384] [2020-12-22 19:17:29,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204724097] [2020-12-22 19:17:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:29,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:17:29,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:29,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:29,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 19:17:29,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903559987] [2020-12-22 19:17:29,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:17:29,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:29,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:17:29,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:17:29,328 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 9 states. [2020-12-22 19:17:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:29,499 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-12-22 19:17:29,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:17:29,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-12-22 19:17:29,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:29,501 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:17:29,501 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 19:17:29,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:17:29,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 19:17:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 56. [2020-12-22 19:17:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 19:17:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-12-22 19:17:29,505 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 21 [2020-12-22 19:17:29,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:29,505 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-12-22 19:17:29,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:17:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-12-22 19:17:29,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:17:29,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:29,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:29,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 19:17:29,722 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:29,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:29,723 INFO L82 PathProgramCache]: Analyzing trace with hash -93493367, now seen corresponding path program 1 times [2020-12-22 19:17:29,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:29,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092468534] [2020-12-22 19:17:29,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:17:29,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092468534] [2020-12-22 19:17:29,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934156240] [2020-12-22 19:17:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:29,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 19:17:29,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:17:29,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:29,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2020-12-22 19:17:29,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769454523] [2020-12-22 19:17:29,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:17:29,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:29,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:17:29,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:17:29,984 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 9 states. [2020-12-22 19:17:30,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:30,169 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-12-22 19:17:30,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:17:30,170 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-22 19:17:30,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:30,171 INFO L225 Difference]: With dead ends: 74 [2020-12-22 19:17:30,171 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 19:17:30,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:17:30,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 19:17:30,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 57. [2020-12-22 19:17:30,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-22 19:17:30,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-12-22 19:17:30,175 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 23 [2020-12-22 19:17:30,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:30,175 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-12-22 19:17:30,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:17:30,176 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-12-22 19:17:30,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:17:30,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:30,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:30,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:30,391 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:30,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:30,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1409452358, now seen corresponding path program 1 times [2020-12-22 19:17:30,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:30,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713657559] [2020-12-22 19:17:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:17:30,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713657559] [2020-12-22 19:17:30,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993968902] [2020-12-22 19:17:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:30,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:17:30,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:17:30,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:30,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 19:17:30,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673057630] [2020-12-22 19:17:30,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:17:30,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:30,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:17:30,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:17:30,631 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 9 states. [2020-12-22 19:17:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:30,739 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-12-22 19:17:30,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:17:30,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-22 19:17:30,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:30,741 INFO L225 Difference]: With dead ends: 56 [2020-12-22 19:17:30,741 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 19:17:30,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:17:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 19:17:30,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-12-22 19:17:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 19:17:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-12-22 19:17:30,744 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 27 [2020-12-22 19:17:30,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:30,745 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-12-22 19:17:30,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:17:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-12-22 19:17:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:17:30,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:30,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:30,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 19:17:30,958 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:30,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:30,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1360755252, now seen corresponding path program 1 times [2020-12-22 19:17:30,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:30,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532213806] [2020-12-22 19:17:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:17:31,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532213806] [2020-12-22 19:17:31,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973984697] [2020-12-22 19:17:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:31,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:17:31,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:17:31,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:31,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-22 19:17:31,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715906945] [2020-12-22 19:17:31,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:17:31,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:31,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:17:31,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:17:31,195 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 10 states. [2020-12-22 19:17:31,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:31,408 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-12-22 19:17:31,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 19:17:31,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-12-22 19:17:31,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:31,409 INFO L225 Difference]: With dead ends: 87 [2020-12-22 19:17:31,409 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 19:17:31,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:17:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 19:17:31,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 60. [2020-12-22 19:17:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 19:17:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-12-22 19:17:31,413 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 27 [2020-12-22 19:17:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:31,413 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-12-22 19:17:31,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:17:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-12-22 19:17:31,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:17:31,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:31,414 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:31,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 19:17:31,629 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:31,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:31,630 INFO L82 PathProgramCache]: Analyzing trace with hash -144329733, now seen corresponding path program 1 times [2020-12-22 19:17:31,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:31,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471261820] [2020-12-22 19:17:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:17:31,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471261820] [2020-12-22 19:17:31,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062113729] [2020-12-22 19:17:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:31,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-22 19:17:31,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:31,987 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:17:31,988 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:31,990 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:31,990 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:17:31,991 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-22 19:17:32,065 INFO L348 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-12-22 19:17:32,066 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2020-12-22 19:17:32,067 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:32,072 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:32,074 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:32,074 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:19 [2020-12-22 19:17:32,136 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-22 19:17:32,138 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:32,142 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:32,143 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:17:32,143 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2020-12-22 19:17:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:32,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:32,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15] total 21 [2020-12-22 19:17:32,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830553769] [2020-12-22 19:17:32,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 19:17:32,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:32,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 19:17:32,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:17:32,253 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 21 states. [2020-12-22 19:17:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:33,719 INFO L93 Difference]: Finished difference Result 131 states and 143 transitions. [2020-12-22 19:17:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 19:17:33,719 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 31 [2020-12-22 19:17:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:33,721 INFO L225 Difference]: With dead ends: 131 [2020-12-22 19:17:33,721 INFO L226 Difference]: Without dead ends: 131 [2020-12-22 19:17:33,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=458, Invalid=2404, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 19:17:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-22 19:17:33,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 83. [2020-12-22 19:17:33,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:17:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2020-12-22 19:17:33,727 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 31 [2020-12-22 19:17:33,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:33,728 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2020-12-22 19:17:33,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 19:17:33,728 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2020-12-22 19:17:33,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 19:17:33,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:33,729 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:33,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 19:17:33,942 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:33,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1886210463, now seen corresponding path program 1 times [2020-12-22 19:17:33,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:33,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630663973] [2020-12-22 19:17:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:17:34,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630663973] [2020-12-22 19:17:34,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032338009] [2020-12-22 19:17:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:34,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:17:34,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:17:34,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:34,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 19:17:34,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657750712] [2020-12-22 19:17:34,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:17:34,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:34,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:17:34,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:17:34,140 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand 6 states. [2020-12-22 19:17:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:34,175 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2020-12-22 19:17:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:17:34,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-12-22 19:17:34,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:34,177 INFO L225 Difference]: With dead ends: 106 [2020-12-22 19:17:34,177 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 19:17:34,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:17:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 19:17:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 83. [2020-12-22 19:17:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:17:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2020-12-22 19:17:34,185 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 40 [2020-12-22 19:17:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:34,185 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2020-12-22 19:17:34,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:17:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2020-12-22 19:17:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 19:17:34,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:34,186 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:34,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 19:17:34,401 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:34,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:34,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2032716941, now seen corresponding path program 1 times [2020-12-22 19:17:34,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:34,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242218027] [2020-12-22 19:17:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:17:34,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242218027] [2020-12-22 19:17:34,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016149222] [2020-12-22 19:17:34,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:34,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 19:17:34,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:34,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:17:34,787 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2020-12-22 19:17:34,789 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:34,803 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:34,812 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:34,813 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:17:34,816 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:34,818 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:34,821 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:34,851 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:34,857 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:34,857 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:30 [2020-12-22 19:17:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:17:34,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:34,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2020-12-22 19:17:34,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208472338] [2020-12-22 19:17:34,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:17:34,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:34,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:17:34,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:17:34,987 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 13 states. [2020-12-22 19:17:35,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:35,697 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2020-12-22 19:17:35,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 19:17:35,698 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-12-22 19:17:35,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:35,698 INFO L225 Difference]: With dead ends: 115 [2020-12-22 19:17:35,699 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 19:17:35,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:17:35,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 19:17:35,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2020-12-22 19:17:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-22 19:17:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-12-22 19:17:35,702 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 41 [2020-12-22 19:17:35,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:35,703 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-12-22 19:17:35,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:17:35,703 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-12-22 19:17:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 19:17:35,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:35,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:35,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:35,915 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:35,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:35,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1410284307, now seen corresponding path program 1 times [2020-12-22 19:17:35,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:35,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958810716] [2020-12-22 19:17:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:17:36,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958810716] [2020-12-22 19:17:36,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54185954] [2020-12-22 19:17:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:36,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:17:36,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:36,139 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:17:36,157 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:36,165 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:36,167 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:17:36,168 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:25 [2020-12-22 19:17:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:17:36,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:36,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 19:17:36,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063379555] [2020-12-22 19:17:36,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:17:36,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:36,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:17:36,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:17:36,236 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 10 states. [2020-12-22 19:17:36,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:36,432 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2020-12-22 19:17:36,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:17:36,432 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-12-22 19:17:36,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:36,433 INFO L225 Difference]: With dead ends: 101 [2020-12-22 19:17:36,433 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 19:17:36,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:17:36,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 19:17:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2020-12-22 19:17:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:17:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2020-12-22 19:17:36,438 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 42 [2020-12-22 19:17:36,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:36,438 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2020-12-22 19:17:36,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:17:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2020-12-22 19:17:36,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 19:17:36,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:36,439 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:36,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:36,653 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:36,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:36,654 INFO L82 PathProgramCache]: Analyzing trace with hash 183114832, now seen corresponding path program 2 times [2020-12-22 19:17:36,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:36,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599677879] [2020-12-22 19:17:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:17:36,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599677879] [2020-12-22 19:17:36,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321787034] [2020-12-22 19:17:36,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:36,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:17:36,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:36,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:17:36,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:17:36,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:36,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-12-22 19:17:36,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567483380] [2020-12-22 19:17:36,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:17:36,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:36,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:17:36,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:17:36,924 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 12 states. [2020-12-22 19:17:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:37,234 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2020-12-22 19:17:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:17:37,235 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-12-22 19:17:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:37,235 INFO L225 Difference]: With dead ends: 138 [2020-12-22 19:17:37,235 INFO L226 Difference]: Without dead ends: 138 [2020-12-22 19:17:37,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2020-12-22 19:17:37,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-22 19:17:37,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 93. [2020-12-22 19:17:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 19:17:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-12-22 19:17:37,240 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 46 [2020-12-22 19:17:37,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:37,240 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-12-22 19:17:37,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:17:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-12-22 19:17:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 19:17:37,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:37,241 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-22 19:17:37,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 19:17:37,457 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:37,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:37,458 INFO L82 PathProgramCache]: Analyzing trace with hash 457132991, now seen corresponding path program 2 times [2020-12-22 19:17:37,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:37,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054832106] [2020-12-22 19:17:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:17:37,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054832106] [2020-12-22 19:17:37,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973448333] [2020-12-22 19:17:37,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:37,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:17:37,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:37,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:17:37,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:17:37,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:37,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-22 19:17:37,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733209126] [2020-12-22 19:17:37,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:17:37,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:37,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:17:37,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:17:37,725 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 10 states. [2020-12-22 19:17:37,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:37,897 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2020-12-22 19:17:37,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:17:37,898 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-12-22 19:17:37,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:37,899 INFO L225 Difference]: With dead ends: 86 [2020-12-22 19:17:37,899 INFO L226 Difference]: Without dead ends: 86 [2020-12-22 19:17:37,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:17:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-22 19:17:37,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-12-22 19:17:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:17:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-12-22 19:17:37,902 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 47 [2020-12-22 19:17:37,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:37,903 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-12-22 19:17:37,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:17:37,903 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-12-22 19:17:37,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 19:17:37,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:37,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-22 19:17:38,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:38,118 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:38,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:38,119 INFO L82 PathProgramCache]: Analyzing trace with hash -269976254, now seen corresponding path program 3 times [2020-12-22 19:17:38,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:38,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541289508] [2020-12-22 19:17:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:38,231 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 29 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 19:17:38,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541289508] [2020-12-22 19:17:38,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328278981] [2020-12-22 19:17:38,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:38,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:17:38,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:38,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 19:17:38,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:38,340 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:17:38,340 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:38,347 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:38,349 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:17:38,349 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:22 [2020-12-22 19:17:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 19:17:38,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:38,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2020-12-22 19:17:38,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331627321] [2020-12-22 19:17:38,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:17:38,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:38,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:17:38,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:17:38,489 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 11 states. [2020-12-22 19:17:39,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:39,167 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2020-12-22 19:17:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 19:17:39,168 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-12-22 19:17:39,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:39,169 INFO L225 Difference]: With dead ends: 102 [2020-12-22 19:17:39,169 INFO L226 Difference]: Without dead ends: 102 [2020-12-22 19:17:39,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:17:39,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-22 19:17:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 82. [2020-12-22 19:17:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:17:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-12-22 19:17:39,173 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 52 [2020-12-22 19:17:39,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:39,173 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-12-22 19:17:39,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:17:39,173 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-12-22 19:17:39,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 19:17:39,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:39,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 19:17:39,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 19:17:39,389 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:39,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:39,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1642790799, now seen corresponding path program 2 times [2020-12-22 19:17:39,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:39,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364701960] [2020-12-22 19:17:39,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:17:39,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364701960] [2020-12-22 19:17:39,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224836352] [2020-12-22 19:17:39,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:39,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:17:39,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:39,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:17:39,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:17:39,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:39,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-12-22 19:17:39,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008439731] [2020-12-22 19:17:39,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:17:39,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:39,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:17:39,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:17:39,667 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 12 states. [2020-12-22 19:17:39,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:39,838 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2020-12-22 19:17:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:17:39,839 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-12-22 19:17:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:39,839 INFO L225 Difference]: With dead ends: 89 [2020-12-22 19:17:39,840 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 19:17:39,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:17:39,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 19:17:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2020-12-22 19:17:39,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 19:17:39,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-12-22 19:17:39,843 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 56 [2020-12-22 19:17:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:39,843 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-12-22 19:17:39,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:17:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-12-22 19:17:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 19:17:39,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:39,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 19:17:40,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:40,059 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:40,060 INFO L82 PathProgramCache]: Analyzing trace with hash 74449076, now seen corresponding path program 3 times [2020-12-22 19:17:40,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:40,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671483095] [2020-12-22 19:17:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:17:40,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671483095] [2020-12-22 19:17:40,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579490816] [2020-12-22 19:17:40,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:40,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 19:17:40,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:40,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 19:17:40,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:40,541 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:17:40,542 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:40,550 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:40,554 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:17:40,555 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:40,563 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:40,564 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:17:40,564 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2020-12-22 19:17:40,596 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_21|], 3=[|v_#valid_29|]} [2020-12-22 19:17:40,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:17:40,603 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-12-22 19:17:40,605 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:40,620 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:40,639 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:40,640 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-22 19:17:40,643 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:40,647 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:40,661 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:40,664 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:17:40,664 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:35 [2020-12-22 19:17:40,744 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-22 19:17:40,746 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:40,774 INFO L625 ElimStorePlain]: treesize reduction 4, result has 88.6 percent of original size [2020-12-22 19:17:40,777 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:40,777 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:31 [2020-12-22 19:17:40,942 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:40,943 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 58 [2020-12-22 19:17:40,945 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:41,004 INFO L625 ElimStorePlain]: treesize reduction 24, result has 69.6 percent of original size [2020-12-22 19:17:41,035 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:41,036 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 60 [2020-12-22 19:17:41,045 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:41,120 INFO L625 ElimStorePlain]: treesize reduction 28, result has 66.7 percent of original size [2020-12-22 19:17:41,123 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:17:41,125 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:41,126 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:48, output treesize:58 [2020-12-22 19:17:41,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:17:41,220 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:17:41,288 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:17:41,453 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-22 19:17:41,567 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:41,592 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-22 19:17:41,594 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:41,602 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-22 19:17:41,604 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:41,675 INFO L625 ElimStorePlain]: treesize reduction 4, result has 94.5 percent of original size [2020-12-22 19:17:41,679 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-12-22 19:17:41,679 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:85, output treesize:69 [2020-12-22 19:17:41,906 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:41,907 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34 [2020-12-22 19:17:41,909 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:17:41,910 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:41,916 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:41,936 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:41,953 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:41,953 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 44 [2020-12-22 19:17:41,960 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:42,006 INFO L625 ElimStorePlain]: treesize reduction 16, result has 71.4 percent of original size [2020-12-22 19:17:42,008 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:42,009 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:50, output treesize:42 [2020-12-22 19:17:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 19:17:42,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:42,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2020-12-22 19:17:42,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044492439] [2020-12-22 19:17:42,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 19:17:42,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:42,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 19:17:42,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-12-22 19:17:42,379 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 24 states. [2020-12-22 19:17:43,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:43,738 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2020-12-22 19:17:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:17:43,738 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 60 [2020-12-22 19:17:43,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:43,739 INFO L225 Difference]: With dead ends: 103 [2020-12-22 19:17:43,740 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 19:17:43,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 19:17:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 19:17:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-12-22 19:17:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 19:17:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2020-12-22 19:17:43,744 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 60 [2020-12-22 19:17:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:43,745 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2020-12-22 19:17:43,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 19:17:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2020-12-22 19:17:43,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 19:17:43,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:43,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:43,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:17:43,947 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:43,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:43,948 INFO L82 PathProgramCache]: Analyzing trace with hash -720543990, now seen corresponding path program 1 times [2020-12-22 19:17:43,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:43,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259291530] [2020-12-22 19:17:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:17:44,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259291530] [2020-12-22 19:17:44,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811207034] [2020-12-22 19:17:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:44,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:17:44,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:17:44,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:44,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 19:17:44,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312828411] [2020-12-22 19:17:44,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:17:44,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:44,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:17:44,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:17:44,180 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 7 states. [2020-12-22 19:17:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:44,224 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2020-12-22 19:17:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:17:44,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-12-22 19:17:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:44,225 INFO L225 Difference]: With dead ends: 137 [2020-12-22 19:17:44,225 INFO L226 Difference]: Without dead ends: 137 [2020-12-22 19:17:44,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:17:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-22 19:17:44,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 104. [2020-12-22 19:17:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-22 19:17:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2020-12-22 19:17:44,230 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 69 [2020-12-22 19:17:44,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:44,230 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2020-12-22 19:17:44,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:17:44,230 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2020-12-22 19:17:44,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 19:17:44,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:44,231 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2020-12-22 19:17:44,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 19:17:44,446 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:44,447 INFO L82 PathProgramCache]: Analyzing trace with hash -809246151, now seen corresponding path program 1 times [2020-12-22 19:17:44,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:44,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951948275] [2020-12-22 19:17:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 33 proven. 92 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 19:17:44,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951948275] [2020-12-22 19:17:44,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955471689] [2020-12-22 19:17:44,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:44,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 19:17:44,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:44,916 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:44,916 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:17:44,918 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:44,920 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:44,922 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:44,932 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:44,936 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2020-12-22 19:17:44,938 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:44,949 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:44,951 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:44,951 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:30 [2020-12-22 19:17:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 59 proven. 61 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:17:45,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:45,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2020-12-22 19:17:45,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339092992] [2020-12-22 19:17:45,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:17:45,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:45,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:17:45,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:17:45,176 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand 17 states. [2020-12-22 19:17:45,735 WARN L197 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 19:17:47,285 WARN L197 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-22 19:17:47,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:47,410 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2020-12-22 19:17:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 19:17:47,410 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2020-12-22 19:17:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:47,412 INFO L225 Difference]: With dead ends: 138 [2020-12-22 19:17:47,412 INFO L226 Difference]: Without dead ends: 138 [2020-12-22 19:17:47,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-12-22 19:17:47,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-22 19:17:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 108. [2020-12-22 19:17:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 19:17:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2020-12-22 19:17:47,417 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 75 [2020-12-22 19:17:47,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:47,417 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2020-12-22 19:17:47,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:17:47,418 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2020-12-22 19:17:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 19:17:47,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:47,418 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2020-12-22 19:17:47,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 19:17:47,632 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:47,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:47,633 INFO L82 PathProgramCache]: Analyzing trace with hash 683173057, now seen corresponding path program 1 times [2020-12-22 19:17:47,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:47,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420805758] [2020-12-22 19:17:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 88 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:17:47,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420805758] [2020-12-22 19:17:47,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939409158] [2020-12-22 19:17:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:47,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 19:17:47,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:47,942 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:17:47,943 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:47,950 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:47,952 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:17:47,952 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:25 [2020-12-22 19:17:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 66 proven. 59 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:17:48,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:48,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-12-22 19:17:48,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862707747] [2020-12-22 19:17:48,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:17:48,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:48,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:17:48,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:17:48,059 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand 13 states. [2020-12-22 19:17:48,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:48,437 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2020-12-22 19:17:48,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:17:48,438 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-12-22 19:17:48,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:48,439 INFO L225 Difference]: With dead ends: 124 [2020-12-22 19:17:48,439 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 19:17:48,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:17:48,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 19:17:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-12-22 19:17:48,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 19:17:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2020-12-22 19:17:48,442 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 76 [2020-12-22 19:17:48,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:48,443 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2020-12-22 19:17:48,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:17:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2020-12-22 19:17:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 19:17:48,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:48,444 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2020-12-22 19:17:48,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 19:17:48,658 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:48,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:48,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1737117148, now seen corresponding path program 2 times [2020-12-22 19:17:48,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:48,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876669150] [2020-12-22 19:17:48,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 137 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:17:48,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876669150] [2020-12-22 19:17:48,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519629606] [2020-12-22 19:17:48,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:48,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:17:48,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:48,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:17:48,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 24 proven. 126 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:17:49,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:49,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2020-12-22 19:17:49,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329834308] [2020-12-22 19:17:49,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 19:17:49,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:49,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 19:17:49,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:17:49,054 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand 15 states. [2020-12-22 19:17:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:49,582 INFO L93 Difference]: Finished difference Result 177 states and 191 transitions. [2020-12-22 19:17:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:17:49,583 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2020-12-22 19:17:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:49,584 INFO L225 Difference]: With dead ends: 177 [2020-12-22 19:17:49,585 INFO L226 Difference]: Without dead ends: 177 [2020-12-22 19:17:49,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=729, Unknown=0, NotChecked=0, Total=992 [2020-12-22 19:17:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-22 19:17:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 125. [2020-12-22 19:17:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 19:17:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2020-12-22 19:17:49,590 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 80 [2020-12-22 19:17:49,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:49,590 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2020-12-22 19:17:49,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 19:17:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2020-12-22 19:17:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 19:17:49,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:49,591 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1] [2020-12-22 19:17:49,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 19:17:49,805 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:49,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:49,806 INFO L82 PathProgramCache]: Analyzing trace with hash 2063645405, now seen corresponding path program 4 times [2020-12-22 19:17:49,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:49,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546742233] [2020-12-22 19:17:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 108 proven. 61 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-22 19:17:49,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546742233] [2020-12-22 19:17:49,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487732359] [2020-12-22 19:17:49,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:50,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:17:50,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:50,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:17:50,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 120 proven. 49 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-22 19:17:50,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:50,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-12-22 19:17:50,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220521822] [2020-12-22 19:17:50,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:17:50,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:50,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:17:50,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:17:50,218 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 13 states. [2020-12-22 19:17:50,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:50,529 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2020-12-22 19:17:50,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:17:50,529 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-12-22 19:17:50,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:50,530 INFO L225 Difference]: With dead ends: 127 [2020-12-22 19:17:50,530 INFO L226 Difference]: Without dead ends: 127 [2020-12-22 19:17:50,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:17:50,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-22 19:17:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-22 19:17:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 19:17:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2020-12-22 19:17:50,536 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 89 [2020-12-22 19:17:50,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:50,536 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2020-12-22 19:17:50,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:17:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2020-12-22 19:17:50,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 19:17:50,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:50,537 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1] [2020-12-22 19:17:50,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:50,751 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:50,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:50,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1589193848, now seen corresponding path program 5 times [2020-12-22 19:17:50,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:50,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985206339] [2020-12-22 19:17:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 115 proven. 23 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-12-22 19:17:50,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985206339] [2020-12-22 19:17:50,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772545780] [2020-12-22 19:17:50,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:17:51,090 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-22 19:17:51,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:51,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:17:51,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 121 proven. 17 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-12-22 19:17:51,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:51,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-12-22 19:17:51,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049300091] [2020-12-22 19:17:51,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:17:51,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:51,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:17:51,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:17:51,238 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand 13 states. [2020-12-22 19:17:51,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:51,538 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2020-12-22 19:17:51,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:17:51,539 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-12-22 19:17:51,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:51,540 INFO L225 Difference]: With dead ends: 132 [2020-12-22 19:17:51,540 INFO L226 Difference]: Without dead ends: 132 [2020-12-22 19:17:51,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:17:51,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-22 19:17:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2020-12-22 19:17:51,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-22 19:17:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2020-12-22 19:17:51,544 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 94 [2020-12-22 19:17:51,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:51,544 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2020-12-22 19:17:51,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:17:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2020-12-22 19:17:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 19:17:51,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:51,548 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1] [2020-12-22 19:17:51,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-22 19:17:51,762 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:17:51,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:51,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1513852853, now seen corresponding path program 6 times [2020-12-22 19:17:51,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:51,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598443501] [2020-12-22 19:17:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-12-22 19:17:52,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598443501] [2020-12-22 19:17:52,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846944962] [2020-12-22 19:17:52,250 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:52,402 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-22 19:17:52,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:52,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 19:17:52,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:52,415 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:17:52,416 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:52,422 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:52,424 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:17:52,425 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:52,431 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:52,431 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:17:52,431 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-12-22 19:17:52,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:17:52,465 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-12-22 19:17:52,466 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:52,475 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:52,483 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:52,484 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:17:52,485 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:52,486 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:52,493 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:52,496 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:52,496 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:20 [2020-12-22 19:17:52,611 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:52,612 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 58 [2020-12-22 19:17:52,614 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:52,651 INFO L625 ElimStorePlain]: treesize reduction 24, result has 59.3 percent of original size [2020-12-22 19:17:52,654 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:52,656 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:52,656 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:37 [2020-12-22 19:17:52,658 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:52,730 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:52,785 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:52,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:52,893 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:52,943 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:52,995 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:53,051 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:53,114 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:53,169 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:53,395 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:53,449 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:55,437 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:55,499 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:55,579 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:55,647 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:55,649 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:17:55,650 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:17:55,653 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:17:55,654 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:55,657 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:17:55,659 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:17:55,661 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:17:55,687 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:17:55,689 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:55,703 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:17:55,704 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:55,711 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:17:55,712 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:55,785 INFO L625 ElimStorePlain]: treesize reduction 34, result has 62.6 percent of original size [2020-12-22 19:17:55,788 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-12-22 19:17:55,788 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:94, output treesize:57 [2020-12-22 19:17:55,904 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:17:55,906 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:55,917 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:55,919 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:55,919 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:22 [2020-12-22 19:17:58,035 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:58,036 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 60 [2020-12-22 19:17:58,042 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:58,082 INFO L625 ElimStorePlain]: treesize reduction 28, result has 54.1 percent of original size [2020-12-22 19:17:58,085 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:58,085 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:35 [2020-12-22 19:18:48,887 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:18:48,915 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:18:48,918 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:48,937 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:18:48,940 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:49,080 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-12-22 19:18:49,082 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:49,086 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-12-22 19:18:49,087 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:68 [2020-12-22 19:18:51,420 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-12-22 19:18:53,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:53,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:53,843 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:53,844 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 44 [2020-12-22 19:18:53,851 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:54,066 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-22 19:18:54,068 INFO L625 ElimStorePlain]: treesize reduction 16, result has 73.3 percent of original size [2020-12-22 19:18:54,179 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:54,179 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34 [2020-12-22 19:18:54,183 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:18:54,184 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:18:54,189 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:18:54,190 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:18:54,195 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:18:54,199 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:18:54,205 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:54,283 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:54,287 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:18:54,287 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:39 [2020-12-22 19:18:56,590 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2020-12-22 19:19:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 61 proven. 103 refuted. 52 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 19:19:10,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:19:10,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2020-12-22 19:19:10,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670965683] [2020-12-22 19:19:10,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-22 19:19:10,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:19:10,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-22 19:19:10,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=879, Unknown=11, NotChecked=0, Total=992 [2020-12-22 19:19:10,344 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand 32 states. [2020-12-22 19:19:14,943 WARN L197 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-22 19:19:19,396 WARN L197 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-12-22 19:19:23,811 WARN L197 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-12-22 19:19:28,244 WARN L197 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-12-22 19:19:32,712 WARN L197 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-12-22 19:19:37,283 WARN L197 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-12-22 19:19:41,991 WARN L197 SmtUtils]: Spent 4.22 s on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-22 19:19:46,476 WARN L197 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-12-22 19:19:50,932 WARN L197 SmtUtils]: Spent 4.30 s on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-12-22 19:19:55,523 WARN L197 SmtUtils]: Spent 4.30 s on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-12-22 19:19:59,972 WARN L197 SmtUtils]: Spent 4.30 s on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-12-22 19:20:04,904 WARN L197 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-12-22 19:20:09,371 WARN L197 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 19:20:14,518 WARN L197 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 19:20:19,009 WARN L197 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-22 19:20:23,392 WARN L197 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 19:20:28,104 WARN L197 SmtUtils]: Spent 4.22 s on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-12-22 19:20:32,538 WARN L197 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-22 19:20:34,794 WARN L197 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-22 19:20:39,031 WARN L197 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-22 19:20:41,543 WARN L197 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-22 19:20:43,774 WARN L197 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-22 19:20:46,010 WARN L197 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-22 19:20:48,189 WARN L197 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-22 19:20:52,515 WARN L197 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-12-22 19:20:56,933 WARN L197 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-22 19:21:01,289 WARN L197 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-12-22 19:21:05,660 WARN L197 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-22 19:21:10,052 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-12-22 19:21:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:21:10,168 INFO L93 Difference]: Finished difference Result 180 states and 191 transitions. [2020-12-22 19:21:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 19:21:10,174 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 98 [2020-12-22 19:21:10,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:21:10,175 INFO L225 Difference]: With dead ends: 180 [2020-12-22 19:21:10,175 INFO L226 Difference]: Without dead ends: 180 [2020-12-22 19:21:10,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 48 SyntacticMatches, 37 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 190.6s TimeCoverageRelationStatistics Valid=613, Invalid=3157, Unknown=12, NotChecked=0, Total=3782 [2020-12-22 19:21:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-22 19:21:10,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2020-12-22 19:21:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-22 19:21:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2020-12-22 19:21:10,184 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 98 [2020-12-22 19:21:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:21:10,185 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2020-12-22 19:21:10,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-22 19:21:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2020-12-22 19:21:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 19:21:10,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:21:10,186 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:21:10,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:10,387 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:21:10,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:21:10,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1637321043, now seen corresponding path program 2 times [2020-12-22 19:21:10,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:21:10,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697491734] [2020-12-22 19:21:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:21:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-22 19:21:10,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697491734] [2020-12-22 19:21:10,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753272395] [2020-12-22 19:21:10,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:10,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:21:10,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:21:10,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:21:10,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:21:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-22 19:21:11,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:21:11,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 19:21:11,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960190849] [2020-12-22 19:21:11,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:21:11,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:21:11,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:21:11,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:21:11,303 INFO L87 Difference]: Start difference. First operand 151 states and 160 transitions. Second operand 8 states. [2020-12-22 19:21:11,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:21:11,472 INFO L93 Difference]: Finished difference Result 237 states and 254 transitions. [2020-12-22 19:21:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:21:11,477 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2020-12-22 19:21:11,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:21:11,479 INFO L225 Difference]: With dead ends: 237 [2020-12-22 19:21:11,479 INFO L226 Difference]: Without dead ends: 237 [2020-12-22 19:21:11,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:21:11,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-22 19:21:11,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 173. [2020-12-22 19:21:11,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-22 19:21:11,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 184 transitions. [2020-12-22 19:21:11,485 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 184 transitions. Word has length 107 [2020-12-22 19:21:11,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:21:11,486 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 184 transitions. [2020-12-22 19:21:11,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:21:11,486 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 184 transitions. [2020-12-22 19:21:11,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 19:21:11,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:21:11,487 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1] [2020-12-22 19:21:11,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 19:21:11,701 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:21:11,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:21:11,702 INFO L82 PathProgramCache]: Analyzing trace with hash 141914171, now seen corresponding path program 3 times [2020-12-22 19:21:11,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:21:11,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926645210] [2020-12-22 19:21:11,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:21:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 152 proven. 201 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 19:21:12,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926645210] [2020-12-22 19:21:12,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317946220] [2020-12-22 19:21:12,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:12,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:21:12,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:21:12,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 19:21:12,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:21:13,338 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:13,338 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 44 [2020-12-22 19:21:13,341 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:21:13,344 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:13,496 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-12-22 19:21:13,498 INFO L625 ElimStorePlain]: treesize reduction 16, result has 72.9 percent of original size [2020-12-22 19:21:13,502 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:13,504 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:13,507 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:13,508 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:21:13,509 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:21:13,509 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:52 [2020-12-22 19:21:13,511 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:13,513 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:21:13,647 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:13,648 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:21:13,652 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: should have been removed by DER [2020-12-22 19:21:13,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:21:13,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 19:21:13,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825221689] [2020-12-22 19:21:13,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:21:13,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:21:13,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:21:13,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:21:13,654 INFO L87 Difference]: Start difference. First operand 173 states and 184 transitions. Second operand 12 states. [2020-12-22 19:21:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:21:16,020 INFO L93 Difference]: Finished difference Result 188 states and 200 transitions. [2020-12-22 19:21:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 19:21:16,025 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 118 [2020-12-22 19:21:16,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:21:16,027 INFO L225 Difference]: With dead ends: 188 [2020-12-22 19:21:16,027 INFO L226 Difference]: Without dead ends: 188 [2020-12-22 19:21:16,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:21:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-22 19:21:16,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 174. [2020-12-22 19:21:16,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-22 19:21:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 185 transitions. [2020-12-22 19:21:16,037 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 185 transitions. Word has length 118 [2020-12-22 19:21:16,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:21:16,038 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 185 transitions. [2020-12-22 19:21:16,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:21:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 185 transitions. [2020-12-22 19:21:16,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 19:21:16,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:21:16,039 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1] [2020-12-22 19:21:16,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-22 19:21:16,254 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:21:16,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:21:16,255 INFO L82 PathProgramCache]: Analyzing trace with hash 104371967, now seen corresponding path program 2 times [2020-12-22 19:21:16,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:21:16,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078062184] [2020-12-22 19:21:16,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:21:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 159 proven. 194 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-22 19:21:16,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078062184] [2020-12-22 19:21:16,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035717455] [2020-12-22 19:21:16,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:16,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:21:16,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:21:16,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:21:16,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:21:17,309 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:21:17,312 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:17,338 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:17,341 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:21:17,342 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:25 [2020-12-22 19:21:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-12-22 19:21:17,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:21:17,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2020-12-22 19:21:17,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139444173] [2020-12-22 19:21:17,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 19:21:17,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:21:17,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 19:21:17,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:21:17,740 INFO L87 Difference]: Start difference. First operand 174 states and 185 transitions. Second operand 15 states. [2020-12-22 19:21:20,009 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-12-22 19:21:20,220 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 19:21:20,429 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 19:21:20,647 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-12-22 19:21:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:21:21,455 INFO L93 Difference]: Finished difference Result 176 states and 187 transitions. [2020-12-22 19:21:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 19:21:21,458 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 119 [2020-12-22 19:21:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:21:21,460 INFO L225 Difference]: With dead ends: 176 [2020-12-22 19:21:21,460 INFO L226 Difference]: Without dead ends: 176 [2020-12-22 19:21:21,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=328, Invalid=932, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 19:21:21,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-22 19:21:21,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2020-12-22 19:21:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-22 19:21:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 184 transitions. [2020-12-22 19:21:21,465 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 184 transitions. Word has length 119 [2020-12-22 19:21:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:21:21,465 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 184 transitions. [2020-12-22 19:21:21,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 19:21:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 184 transitions. [2020-12-22 19:21:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 19:21:21,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:21:21,467 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1] [2020-12-22 19:21:21,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 19:21:21,672 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:21:21,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:21:21,673 INFO L82 PathProgramCache]: Analyzing trace with hash 2046203234, now seen corresponding path program 4 times [2020-12-22 19:21:21,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:21:21,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690340999] [2020-12-22 19:21:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:21:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 28 proven. 367 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-22 19:21:22,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690340999] [2020-12-22 19:21:22,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338823946] [2020-12-22 19:21:22,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:22,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:21:22,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:21:22,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:21:22,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:21:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 44 proven. 351 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-22 19:21:23,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:21:23,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2020-12-22 19:21:23,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954251743] [2020-12-22 19:21:23,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 19:21:23,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:21:23,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 19:21:23,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:21:23,486 INFO L87 Difference]: Start difference. First operand 173 states and 184 transitions. Second operand 18 states. [2020-12-22 19:21:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:21:25,821 INFO L93 Difference]: Finished difference Result 253 states and 271 transitions. [2020-12-22 19:21:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 19:21:25,826 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 123 [2020-12-22 19:21:25,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:21:25,828 INFO L225 Difference]: With dead ends: 253 [2020-12-22 19:21:25,828 INFO L226 Difference]: Without dead ends: 253 [2020-12-22 19:21:25,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=412, Invalid=1228, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 19:21:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-12-22 19:21:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 194. [2020-12-22 19:21:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-12-22 19:21:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 206 transitions. [2020-12-22 19:21:25,834 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 206 transitions. Word has length 123 [2020-12-22 19:21:25,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:21:25,834 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 206 transitions. [2020-12-22 19:21:25,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 19:21:25,835 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 206 transitions. [2020-12-22 19:21:25,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 19:21:25,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:21:25,836 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1] [2020-12-22 19:21:26,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 19:21:26,043 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:21:26,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:21:26,044 INFO L82 PathProgramCache]: Analyzing trace with hash 188104713, now seen corresponding path program 7 times [2020-12-22 19:21:26,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:21:26,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028129841] [2020-12-22 19:21:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:21:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 350 proven. 134 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-12-22 19:21:26,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028129841] [2020-12-22 19:21:26,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640150413] [2020-12-22 19:21:26,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:26,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 19:21:26,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:21:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 225 proven. 259 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-12-22 19:21:27,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:21:27,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2020-12-22 19:21:27,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045634284] [2020-12-22 19:21:27,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 19:21:27,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:21:27,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 19:21:27,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:21:27,827 INFO L87 Difference]: Start difference. First operand 194 states and 206 transitions. Second operand 18 states. [2020-12-22 19:21:29,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:21:29,263 INFO L93 Difference]: Finished difference Result 208 states and 220 transitions. [2020-12-22 19:21:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 19:21:29,267 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2020-12-22 19:21:29,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:21:29,270 INFO L225 Difference]: With dead ends: 208 [2020-12-22 19:21:29,270 INFO L226 Difference]: Without dead ends: 208 [2020-12-22 19:21:29,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:21:29,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-12-22 19:21:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2020-12-22 19:21:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-22 19:21:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 214 transitions. [2020-12-22 19:21:29,274 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 214 transitions. Word has length 141 [2020-12-22 19:21:29,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:21:29,275 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 214 transitions. [2020-12-22 19:21:29,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 19:21:29,275 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 214 transitions. [2020-12-22 19:21:29,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 19:21:29,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:21:29,277 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1] [2020-12-22 19:21:29,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-22 19:21:29,491 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:21:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:21:29,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2033693772, now seen corresponding path program 8 times [2020-12-22 19:21:29,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:21:29,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166348489] [2020-12-22 19:21:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:21:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-12-22 19:21:31,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166348489] [2020-12-22 19:21:31,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806724057] [2020-12-22 19:21:31,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:31,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:21:31,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:21:31,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-22 19:21:31,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:21:31,795 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:21:31,799 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:31,829 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:31,832 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:21:31,832 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-22 19:21:31,914 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:31,914 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 32 [2020-12-22 19:21:31,919 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:32,032 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2020-12-22 19:21:32,034 INFO L625 ElimStorePlain]: treesize reduction 12, result has 65.7 percent of original size [2020-12-22 19:21:32,037 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:21:32,037 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:25 [2020-12-22 19:21:32,220 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:21:32,244 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:21:32,247 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:32,264 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:21:32,267 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:32,379 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-22 19:21:32,380 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:32,383 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-22 19:21:32,383 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:50, output treesize:48 [2020-12-22 19:21:32,872 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:32,874 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:32,876 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:21:33,079 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-22 19:21:33,081 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:33,081 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 68 [2020-12-22 19:21:33,086 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:33,088 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:33,171 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:33,172 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 36 [2020-12-22 19:21:33,178 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:33,645 WARN L197 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-12-22 19:21:33,647 INFO L625 ElimStorePlain]: treesize reduction 54, result has 58.5 percent of original size [2020-12-22 19:21:33,739 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:33,740 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:21:33,743 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:33,825 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:33,825 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:21:33,828 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:34,205 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-12-22 19:21:34,207 INFO L625 ElimStorePlain]: treesize reduction 24, result has 76.5 percent of original size [2020-12-22 19:21:34,210 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:34,211 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-22 19:21:34,211 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:76, output treesize:82 [2020-12-22 19:21:34,214 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:34,637 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-12-22 19:21:34,736 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:34,737 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:21:34,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:21:34,878 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:34,879 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-22 19:21:34,883 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:34,909 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2020-12-22 19:21:34,915 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:34,935 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2020-12-22 19:21:34,940 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:35,205 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-12-22 19:21:35,207 INFO L625 ElimStorePlain]: treesize reduction 46, result has 50.0 percent of original size [2020-12-22 19:21:35,210 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-22 19:21:35,211 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:106, output treesize:46 [2020-12-22 19:21:35,404 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:35,405 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:21:35,409 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:21:35,414 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:35,457 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:35,460 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:21:35,460 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:25 [2020-12-22 19:21:35,922 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-22 19:21:35,924 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:35,924 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 60 [2020-12-22 19:21:35,931 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:36,116 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-12-22 19:21:36,118 INFO L625 ElimStorePlain]: treesize reduction 28, result has 56.3 percent of original size [2020-12-22 19:21:36,121 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:21:36,122 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:38