/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/ArraysOfVariableLength6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:18:03,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:18:03,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:18:03,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:18:03,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:18:03,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:18:03,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:18:03,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:18:03,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:18:03,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:18:03,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:18:03,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:18:03,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:18:03,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:18:03,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:18:03,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:18:03,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:18:03,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:18:03,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:18:03,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:18:03,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:18:03,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:18:03,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:18:03,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:18:03,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:18:03,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:18:03,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:18:03,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:18:03,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:18:03,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:18:03,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:18:03,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:18:03,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:18:03,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:18:03,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:18:03,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:18:03,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:18:03,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:18:03,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:18:03,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:18:03,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:18:03,365 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:18:03,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:18:03,366 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:18:03,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:18:03,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:18:03,367 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:18:03,368 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:18:03,368 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:18:03,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:18:03,368 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:18:03,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:18:03,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:18:03,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:18:03,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:18:03,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:18:03,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:18:03,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:18:03,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:18:03,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:18:03,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:18:03,371 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:18:03,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:18:03,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:18:03,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:18:03,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:18:03,874 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:18:03,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c [2020-12-22 19:18:03,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ee059ea/73bf2e6818a14991a00ca5f6ea76c023/FLAGb0da7b6f9 [2020-12-22 19:18:04,696 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:18:04,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c [2020-12-22 19:18:04,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ee059ea/73bf2e6818a14991a00ca5f6ea76c023/FLAGb0da7b6f9 [2020-12-22 19:18:05,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ee059ea/73bf2e6818a14991a00ca5f6ea76c023 [2020-12-22 19:18:05,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:18:05,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:18:05,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:18:05,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:18:05,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:18:05,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:18:05" (1/1) ... [2020-12-22 19:18:05,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34111f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05, skipping insertion in model container [2020-12-22 19:18:05,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:18:05" (1/1) ... [2020-12-22 19:18:05,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:18:05,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:18:05,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:18:05,292 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:18:05,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:18:05,329 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:18:05,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05 WrapperNode [2020-12-22 19:18:05,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:18:05,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:18:05,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:18:05,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:18:05,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05" (1/1) ... [2020-12-22 19:18:05,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05" (1/1) ... [2020-12-22 19:18:05,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:18:05,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:18:05,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:18:05,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:18:05,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05" (1/1) ... [2020-12-22 19:18:05,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05" (1/1) ... [2020-12-22 19:18:05,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05" (1/1) ... [2020-12-22 19:18:05,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05" (1/1) ... [2020-12-22 19:18:05,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05" (1/1) ... [2020-12-22 19:18:05,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05" (1/1) ... [2020-12-22 19:18:05,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05" (1/1) ... [2020-12-22 19:18:05,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:18:05,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:18:05,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:18:05,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:18:05,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05" (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 19:18:05,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:18:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:18:05,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:18:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:18:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:18:05,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:18:05,861 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:18:05,862 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 19:18:05,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:18:05 BoogieIcfgContainer [2020-12-22 19:18:05,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:18:05,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:18:05,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:18:05,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:18:05,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:18:05" (1/3) ... [2020-12-22 19:18:05,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f07fc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:18:05, skipping insertion in model container [2020-12-22 19:18:05,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:05" (2/3) ... [2020-12-22 19:18:05,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f07fc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:18:05, skipping insertion in model container [2020-12-22 19:18:05,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:18:05" (3/3) ... [2020-12-22 19:18:05,875 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength6.c [2020-12-22 19:18:05,883 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:18:05,891 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 19:18:05,934 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 19:18:05,999 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:18:06,000 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:18:06,000 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:18:06,000 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:18:06,000 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:18:06,001 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:18:06,001 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:18:06,001 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:18:06,026 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-12-22 19:18:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:18:06,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:06,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:18:06,037 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:06,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:06,045 INFO L82 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2020-12-22 19:18:06,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:06,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021762947] [2020-12-22 19:18:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:06,290 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 19:18:06,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021762947] [2020-12-22 19:18:06,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:06,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:18:06,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542936818] [2020-12-22 19:18:06,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:18:06,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:06,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:18:06,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:06,320 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-12-22 19:18:06,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:06,402 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-12-22 19:18:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:06,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-22 19:18:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:06,415 INFO L225 Difference]: With dead ends: 59 [2020-12-22 19:18:06,415 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 19:18:06,417 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 19:18:06,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 19:18:06,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2020-12-22 19:18:06,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 19:18:06,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-12-22 19:18:06,465 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 5 [2020-12-22 19:18:06,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:06,465 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-12-22 19:18:06,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:18:06,466 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-12-22 19:18:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:18:06,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:06,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:18:06,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:18:06,468 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:06,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:06,469 INFO L82 PathProgramCache]: Analyzing trace with hash 889631015, now seen corresponding path program 1 times [2020-12-22 19:18:06,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:06,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021822444] [2020-12-22 19:18:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:06,504 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 19:18:06,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021822444] [2020-12-22 19:18:06,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:06,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:06,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080004948] [2020-12-22 19:18:06,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:18:06,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:06,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:18:06,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:06,510 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 3 states. [2020-12-22 19:18:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:06,580 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-12-22 19:18:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:06,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 19:18:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:06,583 INFO L225 Difference]: With dead ends: 58 [2020-12-22 19:18:06,583 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 19:18:06,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 19:18:06,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 19:18:06,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2020-12-22 19:18:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:18:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 19:18:06,592 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-22 19:18:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:06,593 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 19:18:06,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:18:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 19:18:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:18:06,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:06,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:18:06,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:18:06,594 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:06,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:06,596 INFO L82 PathProgramCache]: Analyzing trace with hash 889666573, now seen corresponding path program 1 times [2020-12-22 19:18:06,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:06,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987370923] [2020-12-22 19:18:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:06,697 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 19:18:06,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987370923] [2020-12-22 19:18:06,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:06,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:06,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671457949] [2020-12-22 19:18:06,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:06,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:06,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:06,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:06,706 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-22 19:18:06,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:06,798 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-12-22 19:18:06,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:06,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 19:18:06,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:06,803 INFO L225 Difference]: With dead ends: 32 [2020-12-22 19:18:06,804 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 19:18:06,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 19:18:06,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 19:18:06,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-22 19:18:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 19:18:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-12-22 19:18:06,823 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2020-12-22 19:18:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:06,824 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-12-22 19:18:06,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-12-22 19:18:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:18:06,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:06,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:18:06,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:18:06,830 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:06,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:06,833 INFO L82 PathProgramCache]: Analyzing trace with hash 889666574, now seen corresponding path program 1 times [2020-12-22 19:18:06,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:06,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87730921] [2020-12-22 19:18:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:06,979 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 19:18:06,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87730921] [2020-12-22 19:18:06,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:06,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:06,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799977315] [2020-12-22 19:18:06,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:06,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:06,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:06,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:06,985 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2020-12-22 19:18:07,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:07,220 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-12-22 19:18:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:18:07,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 19:18:07,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:07,241 INFO L225 Difference]: With dead ends: 55 [2020-12-22 19:18:07,241 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 19:18:07,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 19:18:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 19:18:07,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2020-12-22 19:18:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:18:07,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 19:18:07,248 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-22 19:18:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:07,249 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 19:18:07,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 19:18:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:18:07,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:07,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:07,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:18:07,250 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:07,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1809810359, now seen corresponding path program 1 times [2020-12-22 19:18:07,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:07,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684197237] [2020-12-22 19:18:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:07,309 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 19:18:07,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684197237] [2020-12-22 19:18:07,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:07,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:07,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149906575] [2020-12-22 19:18:07,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:18:07,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:07,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:18:07,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:07,313 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 3 states. [2020-12-22 19:18:07,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:07,346 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-12-22 19:18:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:07,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 19:18:07,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:07,353 INFO L225 Difference]: With dead ends: 35 [2020-12-22 19:18:07,353 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 19:18:07,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 19:18:07,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 19:18:07,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-12-22 19:18:07,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:18:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-12-22 19:18:07,361 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 7 [2020-12-22 19:18:07,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:07,362 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-12-22 19:18:07,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:18:07,364 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-12-22 19:18:07,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:18:07,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:07,365 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:07,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:18:07,365 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:07,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:07,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1480744241, now seen corresponding path program 1 times [2020-12-22 19:18:07,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:07,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919237788] [2020-12-22 19:18:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:07,444 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 19:18:07,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919237788] [2020-12-22 19:18:07,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359398204] [2020-12-22 19:18:07,445 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 19:18:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:07,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:18:07,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:07,563 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 19:18:07,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:07,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-12-22 19:18:07,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711738743] [2020-12-22 19:18:07,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:07,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:07,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:07,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:07,569 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2020-12-22 19:18:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:07,605 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-12-22 19:18:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:07,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 19:18:07,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:07,607 INFO L225 Difference]: With dead ends: 61 [2020-12-22 19:18:07,607 INFO L226 Difference]: Without dead ends: 61 [2020-12-22 19:18:07,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:07,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-22 19:18:07,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 37. [2020-12-22 19:18:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 19:18:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 19:18:07,617 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-22 19:18:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:07,617 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 19:18:07,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:07,618 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 19:18:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:18:07,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:07,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:07,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 19:18:07,831 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:07,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:07,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1341568839, now seen corresponding path program 1 times [2020-12-22 19:18:07,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:07,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192130288] [2020-12-22 19:18:07,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:18:07,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192130288] [2020-12-22 19:18:07,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:07,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:18:07,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688582363] [2020-12-22 19:18:07,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:18:07,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:07,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:18:07,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:07,894 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-12-22 19:18:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:07,953 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-12-22 19:18:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:18:07,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 19:18:07,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:07,955 INFO L225 Difference]: With dead ends: 36 [2020-12-22 19:18:07,955 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 19:18:07,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:07,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 19:18:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-22 19:18:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 19:18:07,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-22 19:18:07,959 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 11 [2020-12-22 19:18:07,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:07,959 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-22 19:18:07,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:18:07,959 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-22 19:18:07,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:18:07,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:07,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:07,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:18:07,961 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:07,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:07,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1361088610, now seen corresponding path program 1 times [2020-12-22 19:18:07,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:07,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999846542] [2020-12-22 19:18:07,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:07,999 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 19:18:08,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999846542] [2020-12-22 19:18:08,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836341016] [2020-12-22 19:18:08,000 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 19:18:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:08,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:18:08,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:08,117 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 19:18:08,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:08,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 19:18:08,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104278671] [2020-12-22 19:18:08,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:18:08,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:08,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:18:08,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:18:08,120 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2020-12-22 19:18:08,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:08,150 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-12-22 19:18:08,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:08,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 19:18:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:08,151 INFO L225 Difference]: With dead ends: 39 [2020-12-22 19:18:08,152 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 19:18:08,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 19:18:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 19:18:08,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-22 19:18:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 19:18:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-12-22 19:18:08,156 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 12 [2020-12-22 19:18:08,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:08,156 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-12-22 19:18:08,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:18:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-12-22 19:18:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 19:18:08,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:08,158 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 19:18:08,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:08,373 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:08,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2073745800, now seen corresponding path program 2 times [2020-12-22 19:18:08,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:08,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342870015] [2020-12-22 19:18:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:08,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342870015] [2020-12-22 19:18:08,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524098530] [2020-12-22 19:18:08,424 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 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 19:18:08,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:18:08,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:08,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:18:08,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:08,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:08,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2020-12-22 19:18:08,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532005395] [2020-12-22 19:18:08,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:18:08,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:08,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:18:08,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:18:08,642 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 9 states. [2020-12-22 19:18:08,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:08,811 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-12-22 19:18:08,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:18:08,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-22 19:18:08,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:08,814 INFO L225 Difference]: With dead ends: 84 [2020-12-22 19:18:08,814 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 19:18:08,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:18:08,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 19:18:08,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 34. [2020-12-22 19:18:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 19:18:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-12-22 19:18:08,820 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 15 [2020-12-22 19:18:08,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:08,821 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-12-22 19:18:08,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:18:08,821 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-12-22 19:18:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:18:08,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:08,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:09,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:09,037 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:09,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:09,039 INFO L82 PathProgramCache]: Analyzing trace with hash 4840471, now seen corresponding path program 2 times [2020-12-22 19:18:09,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:09,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636300962] [2020-12-22 19:18:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:09,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:09,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636300962] [2020-12-22 19:18:09,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730411543] [2020-12-22 19:18:09,112 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 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 19:18:09,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:18:09,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:09,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 19:18:09,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:09,215 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-22 19:18:09,216 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:18:09,218 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:09,222 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:09,224 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 19:18:09,225 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-12-22 19:18:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:18:09,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:09,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2020-12-22 19:18:09,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505542966] [2020-12-22 19:18:09,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:18:09,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:09,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:18:09,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:18:09,264 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 3 states. [2020-12-22 19:18:09,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:09,280 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-12-22 19:18:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:09,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 19:18:09,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:09,282 INFO L225 Difference]: With dead ends: 32 [2020-12-22 19:18:09,282 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 19:18:09,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:18:09,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 19:18:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-22 19:18:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 19:18:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-12-22 19:18:09,286 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 17 [2020-12-22 19:18:09,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:09,286 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-12-22 19:18:09,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:18:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-12-22 19:18:09,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:18:09,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:09,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:09,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:09,502 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:09,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:09,503 INFO L82 PathProgramCache]: Analyzing trace with hash 4840472, now seen corresponding path program 1 times [2020-12-22 19:18:09,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:09,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382487736] [2020-12-22 19:18:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:09,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382487736] [2020-12-22 19:18:09,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657095327] [2020-12-22 19:18:09,560 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 19:18:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:09,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:18:09,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:09,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:09,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 19:18:09,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539246009] [2020-12-22 19:18:09,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:18:09,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:09,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:18:09,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:09,698 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 8 states. [2020-12-22 19:18:09,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:09,738 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-12-22 19:18:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:18:09,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-22 19:18:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:09,740 INFO L225 Difference]: With dead ends: 41 [2020-12-22 19:18:09,740 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 19:18:09,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 19:18:09,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2020-12-22 19:18:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 19:18:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-12-22 19:18:09,744 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2020-12-22 19:18:09,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:09,744 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-12-22 19:18:09,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:18:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-12-22 19:18:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:18:09,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:09,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:09,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 19:18:09,960 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:09,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:09,962 INFO L82 PathProgramCache]: Analyzing trace with hash 452809535, now seen corresponding path program 2 times [2020-12-22 19:18:09,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:09,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648236410] [2020-12-22 19:18:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:10,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648236410] [2020-12-22 19:18:10,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981841067] [2020-12-22 19:18:10,035 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 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 19:18:10,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:18:10,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:10,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:18:10,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:10,104 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_10|], 1=[|v_#valid_21|]} [2020-12-22 19:18:10,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:10,110 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:18:10,111 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:10,125 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:10,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:10,133 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2020-12-22 19:18:10,135 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:10,144 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:10,146 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:18:10,146 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2020-12-22 19:18:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 19:18:10,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:10,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2020-12-22 19:18:10,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102759342] [2020-12-22 19:18:10,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:18:10,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:10,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:18:10,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:10,359 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 3 states. [2020-12-22 19:18:10,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:10,401 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-22 19:18:10,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:10,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:18:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:10,402 INFO L225 Difference]: With dead ends: 58 [2020-12-22 19:18:10,402 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 19:18:10,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 19:18:10,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-12-22 19:18:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 19:18:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-12-22 19:18:10,410 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 22 [2020-12-22 19:18:10,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:10,411 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-12-22 19:18:10,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:18:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-12-22 19:18:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:18:10,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:10,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:10,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:10,616 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:10,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:10,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1462146076, now seen corresponding path program 1 times [2020-12-22 19:18:10,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:10,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421907808] [2020-12-22 19:18:10,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 19:18:10,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421907808] [2020-12-22 19:18:10,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513276553] [2020-12-22 19:18:10,715 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 19:18:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:10,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:18:10,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:10,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:10,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2020-12-22 19:18:10,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40170607] [2020-12-22 19:18:10,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:18:10,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:10,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:18:10,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:10,892 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 8 states. [2020-12-22 19:18:11,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:11,129 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-12-22 19:18:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 19:18:11,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-12-22 19:18:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:11,130 INFO L225 Difference]: With dead ends: 123 [2020-12-22 19:18:11,130 INFO L226 Difference]: Without dead ends: 123 [2020-12-22 19:18:11,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:18:11,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-22 19:18:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 73. [2020-12-22 19:18:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-22 19:18:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2020-12-22 19:18:11,137 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 28 [2020-12-22 19:18:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:11,138 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2020-12-22 19:18:11,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:18:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2020-12-22 19:18:11,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 19:18:11,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:11,140 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:11,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:11,354 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:11,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2053576093, now seen corresponding path program 1 times [2020-12-22 19:18:11,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:11,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734800288] [2020-12-22 19:18:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 90 proven. 34 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-12-22 19:18:11,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734800288] [2020-12-22 19:18:11,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728121245] [2020-12-22 19:18:11,483 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 19:18:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:11,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:18:11,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 90 proven. 34 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-12-22 19:18:11,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:11,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-12-22 19:18:11,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667162534] [2020-12-22 19:18:11,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:18:11,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:11,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:18:11,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:18:11,769 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 12 states. [2020-12-22 19:18:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:11,852 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2020-12-22 19:18:11,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:18:11,853 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-12-22 19:18:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:11,855 INFO L225 Difference]: With dead ends: 91 [2020-12-22 19:18:11,855 INFO L226 Difference]: Without dead ends: 91 [2020-12-22 19:18:11,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:18:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-22 19:18:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2020-12-22 19:18:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:18:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2020-12-22 19:18:11,875 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 54 [2020-12-22 19:18:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:11,875 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2020-12-22 19:18:11,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:18:11,876 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2020-12-22 19:18:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 19:18:11,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:11,885 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:12,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 19:18:12,100 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:12,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1430852155, now seen corresponding path program 2 times [2020-12-22 19:18:12,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:12,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498915329] [2020-12-22 19:18:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 137 proven. 55 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-12-22 19:18:12,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498915329] [2020-12-22 19:18:12,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831331175] [2020-12-22 19:18:12,276 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 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 19:18:12,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:18:12,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:12,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:18:12,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 137 proven. 55 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-12-22 19:18:12,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:12,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-12-22 19:18:12,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096571008] [2020-12-22 19:18:12,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 19:18:12,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:12,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 19:18:12,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:18:12,545 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 14 states. [2020-12-22 19:18:12,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:12,618 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2020-12-22 19:18:12,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:18:12,619 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-12-22 19:18:12,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:12,620 INFO L225 Difference]: With dead ends: 101 [2020-12-22 19:18:12,620 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 19:18:12,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:18:12,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 19:18:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2020-12-22 19:18:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 19:18:12,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2020-12-22 19:18:12,625 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 64 [2020-12-22 19:18:12,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:12,625 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2020-12-22 19:18:12,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 19:18:12,626 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2020-12-22 19:18:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 19:18:12,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:12,628 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:12,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 19:18:12,841 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:12,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:12,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1919974563, now seen corresponding path program 3 times [2020-12-22 19:18:12,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:12,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290658724] [2020-12-22 19:18:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 194 proven. 81 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-22 19:18:13,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290658724] [2020-12-22 19:18:13,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726877697] [2020-12-22 19:18:13,045 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 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 19:18:13,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:18:13,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:13,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:18:13,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:13,114 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_11|], 1=[|v_#valid_22|]} [2020-12-22 19:18:13,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:13,120 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:18:13,121 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:13,131 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:13,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:13,141 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2020-12-22 19:18:13,145 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:13,153 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:13,155 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:18:13,156 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2020-12-22 19:18:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-12-22 19:18:13,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:13,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3] total 11 [2020-12-22 19:18:13,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280359522] [2020-12-22 19:18:13,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:18:13,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:13,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:18:13,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:18:13,517 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand 11 states. [2020-12-22 19:18:14,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:14,087 INFO L93 Difference]: Finished difference Result 156 states and 163 transitions. [2020-12-22 19:18:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:18:14,088 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-12-22 19:18:14,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:14,089 INFO L225 Difference]: With dead ends: 156 [2020-12-22 19:18:14,089 INFO L226 Difference]: Without dead ends: 156 [2020-12-22 19:18:14,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:18:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-22 19:18:14,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2020-12-22 19:18:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 19:18:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 149 transitions. [2020-12-22 19:18:14,095 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 149 transitions. Word has length 74 [2020-12-22 19:18:14,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:14,096 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 149 transitions. [2020-12-22 19:18:14,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:18:14,096 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 149 transitions. [2020-12-22 19:18:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 19:18:14,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:14,098 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:14,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 19:18:14,313 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:14,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:14,314 INFO L82 PathProgramCache]: Analyzing trace with hash -703043040, now seen corresponding path program 2 times [2020-12-22 19:18:14,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:14,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152520574] [2020-12-22 19:18:14,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-12-22 19:18:14,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152520574] [2020-12-22 19:18:14,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351204553] [2020-12-22 19:18:14,454 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 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 19:18:14,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:18:14,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:14,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:18:14,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:14,515 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_23|]} [2020-12-22 19:18:14,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:14,519 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:18:14,520 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:14,528 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:14,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:14,533 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2020-12-22 19:18:14,534 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:14,540 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:14,542 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:18:14,542 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-12-22 19:18:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-12-22 19:18:14,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:14,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-12-22 19:18:14,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239608715] [2020-12-22 19:18:14,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:14,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:14,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:14,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:14,898 INFO L87 Difference]: Start difference. First operand 142 states and 149 transitions. Second operand 4 states. [2020-12-22 19:18:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:14,943 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2020-12-22 19:18:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:14,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-22 19:18:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:14,946 INFO L225 Difference]: With dead ends: 143 [2020-12-22 19:18:14,946 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 19:18:14,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 19:18:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2020-12-22 19:18:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 19:18:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 148 transitions. [2020-12-22 19:18:14,951 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 148 transitions. Word has length 90 [2020-12-22 19:18:14,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:14,952 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 148 transitions. [2020-12-22 19:18:14,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:14,952 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 148 transitions. [2020-12-22 19:18:14,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 19:18:14,953 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:14,954 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:15,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 19:18:15,169 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:15,170 INFO L82 PathProgramCache]: Analyzing trace with hash -2094673244, now seen corresponding path program 1 times [2020-12-22 19:18:15,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:15,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976660688] [2020-12-22 19:18:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 262 proven. 112 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-12-22 19:18:15,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976660688] [2020-12-22 19:18:15,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061154943] [2020-12-22 19:18:15,328 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 19:18:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:15,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:18:15,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 262 proven. 112 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-12-22 19:18:15,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:15,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-12-22 19:18:15,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806751891] [2020-12-22 19:18:15,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 19:18:15,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:15,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 19:18:15,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:18:15,669 INFO L87 Difference]: Start difference. First operand 142 states and 148 transitions. Second operand 18 states. [2020-12-22 19:18:15,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:15,774 INFO L93 Difference]: Finished difference Result 169 states and 175 transitions. [2020-12-22 19:18:15,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:18:15,775 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 93 [2020-12-22 19:18:15,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:15,776 INFO L225 Difference]: With dead ends: 169 [2020-12-22 19:18:15,776 INFO L226 Difference]: Without dead ends: 169 [2020-12-22 19:18:15,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:18:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-22 19:18:15,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 157. [2020-12-22 19:18:15,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-22 19:18:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 163 transitions. [2020-12-22 19:18:15,781 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 163 transitions. Word has length 93 [2020-12-22 19:18:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:15,782 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 163 transitions. [2020-12-22 19:18:15,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 19:18:15,782 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 163 transitions. [2020-12-22 19:18:15,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 19:18:15,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:15,783 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:15,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 19:18:15,997 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:15,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:15,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1716143932, now seen corresponding path program 2 times [2020-12-22 19:18:15,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:15,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259312920] [2020-12-22 19:18:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 339 proven. 148 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-22 19:18:16,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259312920] [2020-12-22 19:18:16,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677846242] [2020-12-22 19:18:16,165 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 19:18:16,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:18:16,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:16,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:18:16,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2020-12-22 19:18:16,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:16,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2020-12-22 19:18:16,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194141713] [2020-12-22 19:18:16,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:16,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:16,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:16,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:18:16,526 INFO L87 Difference]: Start difference. First operand 157 states and 163 transitions. Second operand 4 states. [2020-12-22 19:18:16,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:16,562 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2020-12-22 19:18:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:16,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-12-22 19:18:16,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:16,564 INFO L225 Difference]: With dead ends: 156 [2020-12-22 19:18:16,564 INFO L226 Difference]: Without dead ends: 153 [2020-12-22 19:18:16,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:18:16,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-22 19:18:16,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2020-12-22 19:18:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-22 19:18:16,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 154 transitions. [2020-12-22 19:18:16,569 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 154 transitions. Word has length 103 [2020-12-22 19:18:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:16,569 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 154 transitions. [2020-12-22 19:18:16,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 154 transitions. [2020-12-22 19:18:16,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 19:18:16,570 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:16,571 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:16,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:16,785 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:16,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:16,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1660976843, now seen corresponding path program 1 times [2020-12-22 19:18:16,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:16,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669270917] [2020-12-22 19:18:16,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 339 proven. 148 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-12-22 19:18:16,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669270917] [2020-12-22 19:18:16,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765693780] [2020-12-22 19:18:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:18:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:17,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 19:18:17,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 339 proven. 148 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-12-22 19:18:17,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:17,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2020-12-22 19:18:17,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789085033] [2020-12-22 19:18:17,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 19:18:17,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:17,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 19:18:17,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:18:17,304 INFO L87 Difference]: Start difference. First operand 150 states and 154 transitions. Second operand 20 states. [2020-12-22 19:18:17,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:17,432 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2020-12-22 19:18:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:18:17,432 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-12-22 19:18:17,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:17,434 INFO L225 Difference]: With dead ends: 177 [2020-12-22 19:18:17,434 INFO L226 Difference]: Without dead ends: 177 [2020-12-22 19:18:17,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:18:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-22 19:18:17,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 165. [2020-12-22 19:18:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-12-22 19:18:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 169 transitions. [2020-12-22 19:18:17,440 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 169 transitions. Word has length 104 [2020-12-22 19:18:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:17,440 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 169 transitions. [2020-12-22 19:18:17,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 19:18:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 169 transitions. [2020-12-22 19:18:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 19:18:17,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:17,442 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:17,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:17,658 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:17,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:17,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1846195037, now seen corresponding path program 2 times [2020-12-22 19:18:17,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:17,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405127997] [2020-12-22 19:18:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 426 proven. 189 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-12-22 19:18:17,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405127997] [2020-12-22 19:18:17,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46881826] [2020-12-22 19:18:17,859 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 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 19:18:17,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:18:17,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:17,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:18:17,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 426 proven. 189 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-12-22 19:18:18,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:18,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2020-12-22 19:18:18,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235907596] [2020-12-22 19:18:18,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 19:18:18,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:18,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 19:18:18,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:18:18,296 INFO L87 Difference]: Start difference. First operand 165 states and 169 transitions. Second operand 22 states. [2020-12-22 19:18:18,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:18,398 INFO L93 Difference]: Finished difference Result 192 states and 196 transitions. [2020-12-22 19:18:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:18:18,398 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 114 [2020-12-22 19:18:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:18,400 INFO L225 Difference]: With dead ends: 192 [2020-12-22 19:18:18,400 INFO L226 Difference]: Without dead ends: 192 [2020-12-22 19:18:18,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:18:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-12-22 19:18:18,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2020-12-22 19:18:18,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-22 19:18:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 184 transitions. [2020-12-22 19:18:18,408 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 184 transitions. Word has length 114 [2020-12-22 19:18:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:18,408 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 184 transitions. [2020-12-22 19:18:18,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 19:18:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 184 transitions. [2020-12-22 19:18:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 19:18:18,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:18,410 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:18,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 19:18:18,625 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:18,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:18,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1224310517, now seen corresponding path program 3 times [2020-12-22 19:18:18,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:18,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529685281] [2020-12-22 19:18:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 523 proven. 235 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-12-22 19:18:18,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529685281] [2020-12-22 19:18:18,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273294045] [2020-12-22 19:18:18,887 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 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 19:18:18,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:18:18,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:18,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:18:18,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2020-12-22 19:18:19,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:19,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 19 [2020-12-22 19:18:19,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127245061] [2020-12-22 19:18:19,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:18:19,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:19,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:18:19,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:18:19,303 INFO L87 Difference]: Start difference. First operand 180 states and 184 transitions. Second operand 19 states. [2020-12-22 19:18:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:20,756 INFO L93 Difference]: Finished difference Result 218 states and 223 transitions. [2020-12-22 19:18:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 19:18:20,757 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 124 [2020-12-22 19:18:20,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:20,758 INFO L225 Difference]: With dead ends: 218 [2020-12-22 19:18:20,759 INFO L226 Difference]: Without dead ends: 218 [2020-12-22 19:18:20,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=899, Invalid=1963, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 19:18:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-22 19:18:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 199. [2020-12-22 19:18:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-22 19:18:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 203 transitions. [2020-12-22 19:18:20,765 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 203 transitions. Word has length 124 [2020-12-22 19:18:20,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:20,765 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 203 transitions. [2020-12-22 19:18:20,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:18:20,765 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 203 transitions. [2020-12-22 19:18:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 19:18:20,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:20,767 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-22 19:18:20,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:20,981 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:20,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:20,982 INFO L82 PathProgramCache]: Analyzing trace with hash 496940454, now seen corresponding path program 4 times [2020-12-22 19:18:20,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:20,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077148515] [2020-12-22 19:18:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 630 proven. 286 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2020-12-22 19:18:21,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077148515] [2020-12-22 19:18:21,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262472729] [2020-12-22 19:18:21,245 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 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 19:18:21,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:18:21,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:21,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:18:21,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 636 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2020-12-22 19:18:21,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:21,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 17 [2020-12-22 19:18:21,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421244152] [2020-12-22 19:18:21,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:18:21,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:21,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:18:21,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:18:21,578 INFO L87 Difference]: Start difference. First operand 199 states and 203 transitions. Second operand 17 states. [2020-12-22 19:18:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:22,652 INFO L93 Difference]: Finished difference Result 307 states and 312 transitions. [2020-12-22 19:18:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-22 19:18:22,653 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 138 [2020-12-22 19:18:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:22,654 INFO L225 Difference]: With dead ends: 307 [2020-12-22 19:18:22,654 INFO L226 Difference]: Without dead ends: 307 [2020-12-22 19:18:22,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=910, Invalid=1846, Unknown=0, NotChecked=0, Total=2756 [2020-12-22 19:18:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-12-22 19:18:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 217. [2020-12-22 19:18:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-22 19:18:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2020-12-22 19:18:22,663 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 138 [2020-12-22 19:18:22,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:22,663 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 221 transitions. [2020-12-22 19:18:22,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:18:22,663 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 221 transitions. [2020-12-22 19:18:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 19:18:22,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:22,666 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2020-12-22 19:18:22,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 19:18:22,880 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:22,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1540658664, now seen corresponding path program 4 times [2020-12-22 19:18:22,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:22,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248321477] [2020-12-22 19:18:22,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3275 backedges. 1492 proven. 342 refuted. 0 times theorem prover too weak. 1441 trivial. 0 not checked. [2020-12-22 19:18:23,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248321477] [2020-12-22 19:18:23,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105166632] [2020-12-22 19:18:23,169 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 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 19:18:23,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:18:23,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:23,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 19:18:23,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3275 backedges. 1492 proven. 342 refuted. 0 times theorem prover too weak. 1441 trivial. 0 not checked. [2020-12-22 19:18:23,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:23,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2020-12-22 19:18:23,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194078655] [2020-12-22 19:18:23,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-22 19:18:23,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:23,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-22 19:18:23,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=456, Unknown=0, NotChecked=0, Total=756 [2020-12-22 19:18:23,954 INFO L87 Difference]: Start difference. First operand 217 states and 221 transitions. Second operand 28 states. [2020-12-22 19:18:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:24,108 INFO L93 Difference]: Finished difference Result 244 states and 248 transitions. [2020-12-22 19:18:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 19:18:24,109 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 201 [2020-12-22 19:18:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:24,110 INFO L225 Difference]: With dead ends: 244 [2020-12-22 19:18:24,110 INFO L226 Difference]: Without dead ends: 244 [2020-12-22 19:18:24,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=456, Unknown=0, NotChecked=0, Total=756 [2020-12-22 19:18:24,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-12-22 19:18:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 232. [2020-12-22 19:18:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-12-22 19:18:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 236 transitions. [2020-12-22 19:18:24,118 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 236 transitions. Word has length 201 [2020-12-22 19:18:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:24,118 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 236 transitions. [2020-12-22 19:18:24,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-22 19:18:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 236 transitions. [2020-12-22 19:18:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-12-22 19:18:24,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:24,121 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2020-12-22 19:18:24,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 19:18:24,336 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:24,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1369292055, now seen corresponding path program 5 times [2020-12-22 19:18:24,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:24,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239606393] [2020-12-22 19:18:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3839 backedges. 1746 proven. 403 refuted. 0 times theorem prover too weak. 1690 trivial. 0 not checked. [2020-12-22 19:18:24,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239606393] [2020-12-22 19:18:24,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026062845] [2020-12-22 19:18:24,688 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 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 19:18:24,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2020-12-22 19:18:24,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:24,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 19:18:24,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3839 backedges. 1746 proven. 403 refuted. 0 times theorem prover too weak. 1690 trivial. 0 not checked. [2020-12-22 19:18:25,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:25,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2020-12-22 19:18:25,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973295788] [2020-12-22 19:18:25,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 19:18:25,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:25,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 19:18:25,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=526, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:18:25,609 INFO L87 Difference]: Start difference. First operand 232 states and 236 transitions. Second operand 30 states. [2020-12-22 19:18:25,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:25,752 INFO L93 Difference]: Finished difference Result 259 states and 263 transitions. [2020-12-22 19:18:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 19:18:25,752 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 216 [2020-12-22 19:18:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:25,754 INFO L225 Difference]: With dead ends: 259 [2020-12-22 19:18:25,754 INFO L226 Difference]: Without dead ends: 259 [2020-12-22 19:18:25,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=344, Invalid=526, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:18:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-12-22 19:18:25,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 247. [2020-12-22 19:18:25,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-12-22 19:18:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 251 transitions. [2020-12-22 19:18:25,760 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 251 transitions. Word has length 216 [2020-12-22 19:18:25,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:25,761 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 251 transitions. [2020-12-22 19:18:25,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-22 19:18:25,761 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 251 transitions. [2020-12-22 19:18:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-12-22 19:18:25,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:25,764 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2020-12-22 19:18:25,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:18:25,979 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:25,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:25,980 INFO L82 PathProgramCache]: Analyzing trace with hash -685055944, now seen corresponding path program 6 times [2020-12-22 19:18:25,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:25,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213893297] [2020-12-22 19:18:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 2020 proven. 469 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2020-12-22 19:18:26,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213893297] [2020-12-22 19:18:26,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795434562] [2020-12-22 19:18:26,343 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 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 19:18:26,414 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-22 19:18:26,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:26,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:18:26,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:26,428 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_26|]} [2020-12-22 19:18:26,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:26,434 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:18:26,435 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:26,443 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:26,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:26,448 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2020-12-22 19:18:26,450 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:26,456 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:26,457 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:18:26,457 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-12-22 19:18:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 2028 proven. 0 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-12-22 19:18:27,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:27,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2020-12-22 19:18:27,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83294211] [2020-12-22 19:18:27,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:18:27,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:27,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:18:27,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:18:27,604 INFO L87 Difference]: Start difference. First operand 247 states and 251 transitions. Second operand 6 states. [2020-12-22 19:18:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:27,652 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2020-12-22 19:18:27,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:18:27,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 231 [2020-12-22 19:18:27,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:27,653 INFO L225 Difference]: With dead ends: 245 [2020-12-22 19:18:27,653 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:18:27,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:18:27,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:18:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:18:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:18:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:18:27,655 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 231 [2020-12-22 19:18:27,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:27,655 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:18:27,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:18:27,655 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:18:27,655 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:18:27,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 19:18:27,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:18:27 BoogieIcfgContainer [2020-12-22 19:18:27,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:18:27,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:18:27,877 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:18:27,877 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:18:27,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:18:05" (3/4) ... [2020-12-22 19:18:27,880 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:18:27,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-22 19:18:27,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 19:18:27,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-22 19:18:27,938 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-memsafety/ArraysOfVariableLength6.c-witness.graphml [2020-12-22 19:18:27,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:18:27,940 INFO L168 Benchmark]: Toolchain (without parser) took 22866.63 ms. Allocated memory was 162.5 MB in the beginning and 418.4 MB in the end (delta: 255.9 MB). Free memory was 137.4 MB in the beginning and 209.7 MB in the end (delta: -72.3 MB). Peak memory consumption was 184.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:27,940 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory is still 136.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:18:27,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.20 ms. Allocated memory is still 162.5 MB. Free memory was 137.4 MB in the beginning and 128.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:27,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.54 ms. Allocated memory is still 162.5 MB. Free memory was 128.3 MB in the beginning and 126.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:27,941 INFO L168 Benchmark]: Boogie Preprocessor took 29.18 ms. Allocated memory is still 162.5 MB. Free memory was 126.8 MB in the beginning and 125.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:27,942 INFO L168 Benchmark]: RCFGBuilder took 461.84 ms. Allocated memory is still 162.5 MB. Free memory was 125.6 MB in the beginning and 109.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:27,942 INFO L168 Benchmark]: TraceAbstraction took 22009.72 ms. Allocated memory was 162.5 MB in the beginning and 418.4 MB in the end (delta: 255.9 MB). Free memory was 109.4 MB in the beginning and 212.6 MB in the end (delta: -103.2 MB). Peak memory consumption was 153.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:27,942 INFO L168 Benchmark]: Witness Printer took 62.06 ms. Allocated memory is still 418.4 MB. Free memory was 212.6 MB in the beginning and 209.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:27,945 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory is still 136.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 252.20 ms. Allocated memory is still 162.5 MB. Free memory was 137.4 MB in the beginning and 128.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.54 ms. Allocated memory is still 162.5 MB. Free memory was 128.3 MB in the beginning and 126.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.18 ms. Allocated memory is still 162.5 MB. Free memory was 126.8 MB in the beginning and 125.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 461.84 ms. Allocated memory is still 162.5 MB. Free memory was 125.6 MB in the beginning and 109.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22009.72 ms. Allocated memory was 162.5 MB in the beginning and 418.4 MB in the end (delta: 255.9 MB). Free memory was 109.4 MB in the beginning and 212.6 MB in the end (delta: -103.2 MB). Peak memory consumption was 153.2 MB. Max. memory is 8.0 GB. * Witness Printer took 62.06 ms. Allocated memory is still 418.4 MB. Free memory was 212.6 MB in the beginning and 209.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.8s, OverallIterations: 26, TraceHistogramMax: 42, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 534 SDtfs, 2229 SDslu, 1522 SDs, 0 SdLazy, 1744 SolverSat, 242 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2006 GetRequests, 1653 SyntacticMatches, 2 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 409 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 3495 NumberOfCodeBlocks, 2916 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 3449 ConstructedInterpolants, 410 QuantifiedInterpolants, 2706696 SizeOfPredicates, 38 NumberOfNonLiveVariables, 3589 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 46 InterpolantComputations, 11 PerfectInterpolantSequences, 30425/35387 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...