/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/heap-manipulation/dancing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:20:24,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:20:24,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:20:24,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:20:24,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:20:24,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:20:24,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:20:24,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:20:24,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:20:24,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:20:24,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:20:24,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:20:24,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:20:24,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:20:24,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:20:24,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:20:24,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:20:24,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:20:24,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:20:24,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:20:24,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:20:24,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:20:24,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:20:24,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:20:24,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:20:24,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:20:24,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:20:24,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:20:24,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:20:24,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:20:24,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:20:24,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:20:24,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:20:24,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:20:24,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:20:24,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:20:24,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:20:24,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:20:24,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:20:24,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:20:24,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:20:24,943 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:20:24,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:20:24,944 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:20:24,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:20:24,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:20:24,944 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:20:24,944 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:20:24,945 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:20:24,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:20:24,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:20:24,945 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:20:24,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:20:24,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:20:24,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:20:24,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:20:24,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:20:24,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:20:24,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:20:24,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:20:24,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:20:24,947 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:20:25,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:20:25,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:20:25,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:20:25,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:20:25,352 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:20:25,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dancing.i [2020-12-22 19:20:25,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5490672/7c1ee59f23b74657bda4f08dbdb7cbed/FLAGac8e5036d [2020-12-22 19:20:26,294 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:20:26,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dancing.i [2020-12-22 19:20:26,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5490672/7c1ee59f23b74657bda4f08dbdb7cbed/FLAGac8e5036d [2020-12-22 19:20:26,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5490672/7c1ee59f23b74657bda4f08dbdb7cbed [2020-12-22 19:20:26,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:20:26,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:20:26,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:20:26,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:20:26,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:20:26,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:20:26" (1/1) ... [2020-12-22 19:20:26,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9bdf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:26, skipping insertion in model container [2020-12-22 19:20:26,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:20:26" (1/1) ... [2020-12-22 19:20:26,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:20:26,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:20:26,838 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dancing.i[938,951] [2020-12-22 19:20:26,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:20:27,010 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:20:27,040 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dancing.i[938,951] [2020-12-22 19:20:27,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:20:27,178 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:20:27,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27 WrapperNode [2020-12-22 19:20:27,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:20:27,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:20:27,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:20:27,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:20:27,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27" (1/1) ... [2020-12-22 19:20:27,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27" (1/1) ... [2020-12-22 19:20:27,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:20:27,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:20:27,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:20:27,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:20:27,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27" (1/1) ... [2020-12-22 19:20:27,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27" (1/1) ... [2020-12-22 19:20:27,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27" (1/1) ... [2020-12-22 19:20:27,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27" (1/1) ... [2020-12-22 19:20:27,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27" (1/1) ... [2020-12-22 19:20:27,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27" (1/1) ... [2020-12-22 19:20:27,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27" (1/1) ... [2020-12-22 19:20:27,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:20:27,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:20:27,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:20:27,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:20:27,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27" (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 19:20:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure is_list_containing_x [2020-12-22 19:20:27,439 INFO L138 BoogieDeclarations]: Found implementation of procedure is_list_containing_x [2020-12-22 19:20:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:20:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 19:20:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:20:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 19:20:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:20:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:20:27,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:20:27,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:20:28,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:20:28,135 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-22 19:20:28,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:20:28 BoogieIcfgContainer [2020-12-22 19:20:28,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:20:28,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:20:28,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:20:28,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:20:28,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:20:26" (1/3) ... [2020-12-22 19:20:28,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295801b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:20:28, skipping insertion in model container [2020-12-22 19:20:28,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:20:27" (2/3) ... [2020-12-22 19:20:28,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295801b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:20:28, skipping insertion in model container [2020-12-22 19:20:28,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:20:28" (3/3) ... [2020-12-22 19:20:28,151 INFO L111 eAbstractionObserver]: Analyzing ICFG dancing.i [2020-12-22 19:20:28,161 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:20:28,169 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 45 error locations. [2020-12-22 19:20:28,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2020-12-22 19:20:28,261 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:20:28,261 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:20:28,262 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:20:28,262 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:20:28,262 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:20:28,262 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:20:28,262 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:20:28,263 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:20:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-12-22 19:20:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-22 19:20:28,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:28,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-22 19:20:28,312 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:28,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:28,321 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-12-22 19:20:28,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:28,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079254395] [2020-12-22 19:20:28,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:28,605 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 19:20:28,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079254395] [2020-12-22 19:20:28,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:28,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:20:28,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40909767] [2020-12-22 19:20:28,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:20:28,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:28,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:20:28,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:20:28,644 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 3 states. [2020-12-22 19:20:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:28,794 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-12-22 19:20:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:20:28,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-22 19:20:28,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:28,807 INFO L225 Difference]: With dead ends: 105 [2020-12-22 19:20:28,807 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 19:20:28,809 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 19:20:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 19:20:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-12-22 19:20:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 19:20:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2020-12-22 19:20:28,874 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 3 [2020-12-22 19:20:28,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:28,876 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2020-12-22 19:20:28,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:20:28,878 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2020-12-22 19:20:28,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-22 19:20:28,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:28,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-22 19:20:28,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:20:28,882 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:28,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:28,887 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-12-22 19:20:28,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:28,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856226140] [2020-12-22 19:20:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:28,952 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 19:20:28,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856226140] [2020-12-22 19:20:28,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:28,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:20:28,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060954362] [2020-12-22 19:20:28,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:20:28,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:28,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:20:28,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:20:28,961 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand 3 states. [2020-12-22 19:20:29,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:29,102 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2020-12-22 19:20:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:20:29,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-22 19:20:29,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:29,105 INFO L225 Difference]: With dead ends: 101 [2020-12-22 19:20:29,105 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 19:20:29,106 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 19:20:29,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 19:20:29,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-12-22 19:20:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 19:20:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-12-22 19:20:29,122 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 3 [2020-12-22 19:20:29,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:29,122 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-12-22 19:20:29,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:20:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-12-22 19:20:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 19:20:29,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:29,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:29,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:20:29,125 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:29,126 INFO L82 PathProgramCache]: Analyzing trace with hash 59267633, now seen corresponding path program 1 times [2020-12-22 19:20:29,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:29,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297142476] [2020-12-22 19:20:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:29,188 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 19:20:29,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297142476] [2020-12-22 19:20:29,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:29,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:20:29,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093876159] [2020-12-22 19:20:29,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:20:29,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:29,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:20:29,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:20:29,192 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 3 states. [2020-12-22 19:20:29,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:29,405 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2020-12-22 19:20:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:20:29,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-22 19:20:29,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:29,408 INFO L225 Difference]: With dead ends: 169 [2020-12-22 19:20:29,408 INFO L226 Difference]: Without dead ends: 169 [2020-12-22 19:20:29,409 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 19:20:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-22 19:20:29,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 99. [2020-12-22 19:20:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 19:20:29,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-12-22 19:20:29,426 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 8 [2020-12-22 19:20:29,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:29,426 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-12-22 19:20:29,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:20:29,427 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-12-22 19:20:29,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 19:20:29,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:29,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:29,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:20:29,428 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:29,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:29,429 INFO L82 PathProgramCache]: Analyzing trace with hash 59267634, now seen corresponding path program 1 times [2020-12-22 19:20:29,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:29,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218780540] [2020-12-22 19:20:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:29,525 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 19:20:29,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218780540] [2020-12-22 19:20:29,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:29,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:20:29,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788365668] [2020-12-22 19:20:29,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:20:29,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:29,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:20:29,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:20:29,530 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 3 states. [2020-12-22 19:20:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:29,679 INFO L93 Difference]: Finished difference Result 169 states and 189 transitions. [2020-12-22 19:20:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:20:29,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-22 19:20:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:29,682 INFO L225 Difference]: With dead ends: 169 [2020-12-22 19:20:29,682 INFO L226 Difference]: Without dead ends: 169 [2020-12-22 19:20:29,683 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 19:20:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-22 19:20:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 97. [2020-12-22 19:20:29,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-22 19:20:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2020-12-22 19:20:29,694 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 8 [2020-12-22 19:20:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:29,694 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2020-12-22 19:20:29,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:20:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2020-12-22 19:20:29,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:20:29,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:29,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:29,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:20:29,696 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:29,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:29,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1124495229, now seen corresponding path program 1 times [2020-12-22 19:20:29,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:29,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469593693] [2020-12-22 19:20:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:29,801 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 19:20:29,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469593693] [2020-12-22 19:20:29,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:29,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:20:29,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352660491] [2020-12-22 19:20:29,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:20:29,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:29,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:20:29,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:20:29,805 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand 5 states. [2020-12-22 19:20:29,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:29,946 INFO L93 Difference]: Finished difference Result 180 states and 205 transitions. [2020-12-22 19:20:29,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:20:29,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 19:20:29,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:29,954 INFO L225 Difference]: With dead ends: 180 [2020-12-22 19:20:29,957 INFO L226 Difference]: Without dead ends: 180 [2020-12-22 19:20:29,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:20:29,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-22 19:20:29,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 141. [2020-12-22 19:20:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-22 19:20:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 194 transitions. [2020-12-22 19:20:29,988 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 194 transitions. Word has length 10 [2020-12-22 19:20:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:29,989 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 194 transitions. [2020-12-22 19:20:29,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:20:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 194 transitions. [2020-12-22 19:20:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:20:29,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:29,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:29,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:20:29,993 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:29,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:30,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1121620373, now seen corresponding path program 1 times [2020-12-22 19:20:30,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:30,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929509767] [2020-12-22 19:20:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:30,104 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 19:20:30,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929509767] [2020-12-22 19:20:30,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:30,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:20:30,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238866482] [2020-12-22 19:20:30,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:20:30,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:30,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:20:30,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:20:30,107 INFO L87 Difference]: Start difference. First operand 141 states and 194 transitions. Second operand 4 states. [2020-12-22 19:20:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:30,213 INFO L93 Difference]: Finished difference Result 140 states and 192 transitions. [2020-12-22 19:20:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:20:30,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 19:20:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:30,218 INFO L225 Difference]: With dead ends: 140 [2020-12-22 19:20:30,218 INFO L226 Difference]: Without dead ends: 140 [2020-12-22 19:20:30,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:20:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-22 19:20:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-12-22 19:20:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-22 19:20:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 192 transitions. [2020-12-22 19:20:30,255 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 192 transitions. Word has length 10 [2020-12-22 19:20:30,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:30,255 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 192 transitions. [2020-12-22 19:20:30,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:20:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 192 transitions. [2020-12-22 19:20:30,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:20:30,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:30,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:30,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:20:30,257 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:30,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:30,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1121620372, now seen corresponding path program 1 times [2020-12-22 19:20:30,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:30,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542026430] [2020-12-22 19:20:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:30,347 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 19:20:30,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542026430] [2020-12-22 19:20:30,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:30,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:20:30,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801026083] [2020-12-22 19:20:30,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:20:30,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:30,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:20:30,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:20:30,352 INFO L87 Difference]: Start difference. First operand 140 states and 192 transitions. Second operand 5 states. [2020-12-22 19:20:30,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:30,475 INFO L93 Difference]: Finished difference Result 139 states and 190 transitions. [2020-12-22 19:20:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:20:30,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 19:20:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:30,477 INFO L225 Difference]: With dead ends: 139 [2020-12-22 19:20:30,478 INFO L226 Difference]: Without dead ends: 139 [2020-12-22 19:20:30,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:20:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-12-22 19:20:30,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2020-12-22 19:20:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-12-22 19:20:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 190 transitions. [2020-12-22 19:20:30,536 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 190 transitions. Word has length 10 [2020-12-22 19:20:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:30,537 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 190 transitions. [2020-12-22 19:20:30,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:20:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 190 transitions. [2020-12-22 19:20:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 19:20:30,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:30,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:30,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:20:30,545 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:30,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:30,546 INFO L82 PathProgramCache]: Analyzing trace with hash -676042672, now seen corresponding path program 1 times [2020-12-22 19:20:30,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:30,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378835482] [2020-12-22 19:20:30,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:30,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:20:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:30,701 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 19:20:30,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378835482] [2020-12-22 19:20:30,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:30,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:20:30,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083102565] [2020-12-22 19:20:30,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:20:30,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:30,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:20:30,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:20:30,708 INFO L87 Difference]: Start difference. First operand 139 states and 190 transitions. Second operand 6 states. [2020-12-22 19:20:30,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:30,991 INFO L93 Difference]: Finished difference Result 163 states and 185 transitions. [2020-12-22 19:20:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:20:30,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 19:20:30,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:30,994 INFO L225 Difference]: With dead ends: 163 [2020-12-22 19:20:30,994 INFO L226 Difference]: Without dead ends: 163 [2020-12-22 19:20:30,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:20:30,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-22 19:20:31,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 134. [2020-12-22 19:20:31,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-22 19:20:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 179 transitions. [2020-12-22 19:20:31,003 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 179 transitions. Word has length 15 [2020-12-22 19:20:31,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:31,003 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 179 transitions. [2020-12-22 19:20:31,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:20:31,004 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 179 transitions. [2020-12-22 19:20:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 19:20:31,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:31,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:31,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:20:31,005 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:31,006 INFO L82 PathProgramCache]: Analyzing trace with hash -676042671, now seen corresponding path program 1 times [2020-12-22 19:20:31,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:31,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168868948] [2020-12-22 19:20:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:20:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:31,098 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 19:20:31,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168868948] [2020-12-22 19:20:31,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:31,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:20:31,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275263363] [2020-12-22 19:20:31,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:20:31,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:31,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:20:31,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:20:31,101 INFO L87 Difference]: Start difference. First operand 134 states and 179 transitions. Second operand 6 states. [2020-12-22 19:20:31,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:31,421 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2020-12-22 19:20:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:20:31,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 19:20:31,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:31,423 INFO L225 Difference]: With dead ends: 159 [2020-12-22 19:20:31,423 INFO L226 Difference]: Without dead ends: 159 [2020-12-22 19:20:31,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:20:31,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-22 19:20:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 134. [2020-12-22 19:20:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-22 19:20:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 173 transitions. [2020-12-22 19:20:31,430 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 173 transitions. Word has length 15 [2020-12-22 19:20:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:31,430 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 173 transitions. [2020-12-22 19:20:31,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:20:31,431 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 173 transitions. [2020-12-22 19:20:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:20:31,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:31,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:31,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:20:31,432 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:31,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1007406096, now seen corresponding path program 1 times [2020-12-22 19:20:31,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:31,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151166012] [2020-12-22 19:20:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:31,491 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 19:20:31,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151166012] [2020-12-22 19:20:31,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426041010] [2020-12-22 19:20:31,492 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 19:20:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:31,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 19:20:31,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:31,688 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:20:31,692 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:31,703 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:31,704 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:20:31,704 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:20:31,832 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:31,833 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:20:31,854 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:31,895 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-12-22 19:20:31,896 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:20:31,897 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:17 [2020-12-22 19:20:32,096 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:20:32,104 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:20:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:20:32,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:20:32,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 12 [2020-12-22 19:20:32,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197119886] [2020-12-22 19:20:32,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:20:32,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:32,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:20:32,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:20:32,147 INFO L87 Difference]: Start difference. First operand 134 states and 173 transitions. Second operand 9 states. [2020-12-22 19:20:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:32,814 INFO L93 Difference]: Finished difference Result 205 states and 257 transitions. [2020-12-22 19:20:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:20:32,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-22 19:20:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:32,817 INFO L225 Difference]: With dead ends: 205 [2020-12-22 19:20:32,817 INFO L226 Difference]: Without dead ends: 205 [2020-12-22 19:20:32,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:20:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-22 19:20:32,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 143. [2020-12-22 19:20:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 19:20:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2020-12-22 19:20:32,831 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 16 [2020-12-22 19:20:32,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:32,831 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2020-12-22 19:20:32,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:20:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2020-12-22 19:20:32,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:20:32,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:32,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:33,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 19:20:33,047 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:33,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:33,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1007406097, now seen corresponding path program 1 times [2020-12-22 19:20:33,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:33,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443906830] [2020-12-22 19:20:33,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:33,224 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 19:20:33,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443906830] [2020-12-22 19:20:33,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284784571] [2020-12-22 19:20:33,225 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 19:20:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:33,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 19:20:33,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:33,359 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:33,360 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:20:33,363 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:20:33,367 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:33,394 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-12-22 19:20:33,395 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:20:33,396 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:17 [2020-12-22 19:20:33,560 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:20:33,564 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:20:33,568 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-22 19:20:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:20:33,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:20:33,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 12 [2020-12-22 19:20:33,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917491791] [2020-12-22 19:20:33,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:20:33,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:33,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:20:33,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:20:33,610 INFO L87 Difference]: Start difference. First operand 143 states and 186 transitions. Second operand 10 states. [2020-12-22 19:20:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:34,459 INFO L93 Difference]: Finished difference Result 226 states and 261 transitions. [2020-12-22 19:20:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:20:34,460 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-22 19:20:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:34,462 INFO L225 Difference]: With dead ends: 226 [2020-12-22 19:20:34,462 INFO L226 Difference]: Without dead ends: 226 [2020-12-22 19:20:34,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:20:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-22 19:20:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 143. [2020-12-22 19:20:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 19:20:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 184 transitions. [2020-12-22 19:20:34,472 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 184 transitions. Word has length 16 [2020-12-22 19:20:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:34,472 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 184 transitions. [2020-12-22 19:20:34,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:20:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 184 transitions. [2020-12-22 19:20:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:20:34,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:34,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:34,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:34,687 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:34,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:34,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1682703596, now seen corresponding path program 1 times [2020-12-22 19:20:34,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:34,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988224942] [2020-12-22 19:20:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:34,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:20:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:34,873 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 19:20:34,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988224942] [2020-12-22 19:20:34,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:34,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:20:34,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472115718] [2020-12-22 19:20:34,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:20:34,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:34,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:20:34,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:20:34,876 INFO L87 Difference]: Start difference. First operand 143 states and 184 transitions. Second operand 8 states. [2020-12-22 19:20:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:35,174 INFO L93 Difference]: Finished difference Result 196 states and 245 transitions. [2020-12-22 19:20:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:20:35,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-22 19:20:35,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:35,177 INFO L225 Difference]: With dead ends: 196 [2020-12-22 19:20:35,177 INFO L226 Difference]: Without dead ends: 196 [2020-12-22 19:20:35,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:20:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-22 19:20:35,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 151. [2020-12-22 19:20:35,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-22 19:20:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 195 transitions. [2020-12-22 19:20:35,187 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 195 transitions. Word has length 19 [2020-12-22 19:20:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:35,187 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 195 transitions. [2020-12-22 19:20:35,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:20:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 195 transitions. [2020-12-22 19:20:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:20:35,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:35,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:35,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:20:35,189 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:35,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:35,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1814435946, now seen corresponding path program 1 times [2020-12-22 19:20:35,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:35,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693163703] [2020-12-22 19:20:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:35,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:20:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:35,296 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 19:20:35,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693163703] [2020-12-22 19:20:35,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:35,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 19:20:35,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305575621] [2020-12-22 19:20:35,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:20:35,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:35,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:20:35,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:20:35,299 INFO L87 Difference]: Start difference. First operand 151 states and 195 transitions. Second operand 7 states. [2020-12-22 19:20:35,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:35,543 INFO L93 Difference]: Finished difference Result 191 states and 239 transitions. [2020-12-22 19:20:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:20:35,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-22 19:20:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:35,545 INFO L225 Difference]: With dead ends: 191 [2020-12-22 19:20:35,545 INFO L226 Difference]: Without dead ends: 191 [2020-12-22 19:20:35,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:20:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-22 19:20:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 153. [2020-12-22 19:20:35,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-22 19:20:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 197 transitions. [2020-12-22 19:20:35,553 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 197 transitions. Word has length 21 [2020-12-22 19:20:35,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:35,554 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 197 transitions. [2020-12-22 19:20:35,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:20:35,554 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 197 transitions. [2020-12-22 19:20:35,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:20:35,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:35,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:35,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:20:35,556 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:35,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:35,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1300172899, now seen corresponding path program 1 times [2020-12-22 19:20:35,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:35,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55310935] [2020-12-22 19:20:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:35,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 19:20:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:35,621 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 19:20:35,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55310935] [2020-12-22 19:20:35,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741610868] [2020-12-22 19:20:35,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:35,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:20:35,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:35,876 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 19:20:35,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:20:35,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-12-22 19:20:35,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171392597] [2020-12-22 19:20:35,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:20:35,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:35,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:20:35,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:20:35,881 INFO L87 Difference]: Start difference. First operand 153 states and 197 transitions. Second operand 12 states. [2020-12-22 19:20:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:36,454 INFO L93 Difference]: Finished difference Result 225 states and 258 transitions. [2020-12-22 19:20:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:20:36,455 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-12-22 19:20:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:36,457 INFO L225 Difference]: With dead ends: 225 [2020-12-22 19:20:36,457 INFO L226 Difference]: Without dead ends: 223 [2020-12-22 19:20:36,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:20:36,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-12-22 19:20:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 153. [2020-12-22 19:20:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-22 19:20:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 196 transitions. [2020-12-22 19:20:36,469 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 196 transitions. Word has length 21 [2020-12-22 19:20:36,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:36,469 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 196 transitions. [2020-12-22 19:20:36,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:20:36,469 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 196 transitions. [2020-12-22 19:20:36,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:20:36,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:36,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:36,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 19:20:36,686 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:36,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:36,687 INFO L82 PathProgramCache]: Analyzing trace with hash -2104198502, now seen corresponding path program 1 times [2020-12-22 19:20:36,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:36,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960359036] [2020-12-22 19:20:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:20:36,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960359036] [2020-12-22 19:20:36,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482191154] [2020-12-22 19:20:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:37,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 19:20:37,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:37,107 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:20:37,109 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:37,119 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:37,120 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:20:37,122 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-22 19:20:37,153 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:20:37,153 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:37,158 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:37,160 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:20:37,160 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-12-22 19:20:37,233 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-12-22 19:20:37,235 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:37,238 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:37,238 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:20:37,239 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:5 [2020-12-22 19:20:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:20:37,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:20:37,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2020-12-22 19:20:37,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952294501] [2020-12-22 19:20:37,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:20:37,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:37,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:20:37,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:20:37,304 INFO L87 Difference]: Start difference. First operand 153 states and 196 transitions. Second operand 19 states. [2020-12-22 19:20:39,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:39,536 INFO L93 Difference]: Finished difference Result 519 states and 650 transitions. [2020-12-22 19:20:39,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:20:39,537 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-12-22 19:20:39,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:39,543 INFO L225 Difference]: With dead ends: 519 [2020-12-22 19:20:39,543 INFO L226 Difference]: Without dead ends: 519 [2020-12-22 19:20:39,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 19:20:39,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-12-22 19:20:39,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 237. [2020-12-22 19:20:39,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-22 19:20:39,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 325 transitions. [2020-12-22 19:20:39,561 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 325 transitions. Word has length 22 [2020-12-22 19:20:39,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:39,562 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 325 transitions. [2020-12-22 19:20:39,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:20:39,562 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 325 transitions. [2020-12-22 19:20:39,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:20:39,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:39,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:39,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:39,777 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:39,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:39,778 INFO L82 PathProgramCache]: Analyzing trace with hash 439738587, now seen corresponding path program 1 times [2020-12-22 19:20:39,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:39,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337602456] [2020-12-22 19:20:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:39,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:20:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:39,836 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 19:20:39,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337602456] [2020-12-22 19:20:39,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:39,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:20:39,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118073553] [2020-12-22 19:20:39,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:20:39,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:39,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:20:39,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:20:39,841 INFO L87 Difference]: Start difference. First operand 237 states and 325 transitions. Second operand 4 states. [2020-12-22 19:20:39,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:39,873 INFO L93 Difference]: Finished difference Result 252 states and 340 transitions. [2020-12-22 19:20:39,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:20:39,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-12-22 19:20:39,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:39,881 INFO L225 Difference]: With dead ends: 252 [2020-12-22 19:20:39,881 INFO L226 Difference]: Without dead ends: 252 [2020-12-22 19:20:39,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 19:20:39,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-22 19:20:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 247. [2020-12-22 19:20:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-12-22 19:20:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 335 transitions. [2020-12-22 19:20:39,901 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 335 transitions. Word has length 23 [2020-12-22 19:20:39,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:39,901 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 335 transitions. [2020-12-22 19:20:39,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:20:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 335 transitions. [2020-12-22 19:20:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:20:39,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:39,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:39,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:20:39,904 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:39,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:39,905 INFO L82 PathProgramCache]: Analyzing trace with hash 387998185, now seen corresponding path program 1 times [2020-12-22 19:20:39,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:39,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77371393] [2020-12-22 19:20:39,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:39,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 19:20:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:20:40,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77371393] [2020-12-22 19:20:40,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:40,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:20:40,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433548558] [2020-12-22 19:20:40,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:20:40,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:20:40,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:20:40,004 INFO L87 Difference]: Start difference. First operand 247 states and 335 transitions. Second operand 5 states. [2020-12-22 19:20:40,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:40,315 INFO L93 Difference]: Finished difference Result 316 states and 392 transitions. [2020-12-22 19:20:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:20:40,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-22 19:20:40,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:40,323 INFO L225 Difference]: With dead ends: 316 [2020-12-22 19:20:40,323 INFO L226 Difference]: Without dead ends: 316 [2020-12-22 19:20:40,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:20:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-12-22 19:20:40,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 246. [2020-12-22 19:20:40,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-12-22 19:20:40,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 333 transitions. [2020-12-22 19:20:40,341 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 333 transitions. Word has length 23 [2020-12-22 19:20:40,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:40,342 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 333 transitions. [2020-12-22 19:20:40,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:20:40,342 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 333 transitions. [2020-12-22 19:20:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:20:40,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:40,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:40,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 19:20:40,347 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:40,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:40,348 INFO L82 PathProgramCache]: Analyzing trace with hash 387998186, now seen corresponding path program 1 times [2020-12-22 19:20:40,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:40,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729408554] [2020-12-22 19:20:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:40,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 19:20:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:20:40,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729408554] [2020-12-22 19:20:40,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:40,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:20:40,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984473481] [2020-12-22 19:20:40,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:20:40,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:40,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:20:40,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:20:40,466 INFO L87 Difference]: Start difference. First operand 246 states and 333 transitions. Second operand 5 states. [2020-12-22 19:20:40,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:40,820 INFO L93 Difference]: Finished difference Result 314 states and 385 transitions. [2020-12-22 19:20:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:20:40,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-22 19:20:40,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:40,824 INFO L225 Difference]: With dead ends: 314 [2020-12-22 19:20:40,824 INFO L226 Difference]: Without dead ends: 314 [2020-12-22 19:20:40,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:20:40,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-12-22 19:20:40,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 240. [2020-12-22 19:20:40,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-12-22 19:20:40,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 324 transitions. [2020-12-22 19:20:40,836 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 324 transitions. Word has length 23 [2020-12-22 19:20:40,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:40,836 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 324 transitions. [2020-12-22 19:20:40,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:20:40,836 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 324 transitions. [2020-12-22 19:20:40,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:20:40,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:40,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:40,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:20:40,838 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:40,838 INFO L82 PathProgramCache]: Analyzing trace with hash 746999412, now seen corresponding path program 1 times [2020-12-22 19:20:40,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:40,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043383059] [2020-12-22 19:20:40,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:40,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:20:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:40,911 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 19:20:40,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043383059] [2020-12-22 19:20:40,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:40,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:20:40,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567914622] [2020-12-22 19:20:40,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:20:40,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:40,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:20:40,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:20:40,913 INFO L87 Difference]: Start difference. First operand 240 states and 324 transitions. Second operand 6 states. [2020-12-22 19:20:41,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:41,176 INFO L93 Difference]: Finished difference Result 261 states and 325 transitions. [2020-12-22 19:20:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:20:41,177 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-12-22 19:20:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:41,179 INFO L225 Difference]: With dead ends: 261 [2020-12-22 19:20:41,179 INFO L226 Difference]: Without dead ends: 261 [2020-12-22 19:20:41,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:20:41,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-12-22 19:20:41,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 240. [2020-12-22 19:20:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-12-22 19:20:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 318 transitions. [2020-12-22 19:20:41,189 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 318 transitions. Word has length 24 [2020-12-22 19:20:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:41,189 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 318 transitions. [2020-12-22 19:20:41,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:20:41,190 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 318 transitions. [2020-12-22 19:20:41,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:20:41,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:41,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:41,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 19:20:41,191 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:41,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:41,192 INFO L82 PathProgramCache]: Analyzing trace with hash 746999411, now seen corresponding path program 1 times [2020-12-22 19:20:41,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:41,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557227257] [2020-12-22 19:20:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:41,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:20:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:41,240 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 19:20:41,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557227257] [2020-12-22 19:20:41,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:41,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:20:41,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038716794] [2020-12-22 19:20:41,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:20:41,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:41,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:20:41,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:20:41,242 INFO L87 Difference]: Start difference. First operand 240 states and 318 transitions. Second operand 6 states. [2020-12-22 19:20:41,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:41,468 INFO L93 Difference]: Finished difference Result 252 states and 313 transitions. [2020-12-22 19:20:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:20:41,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-12-22 19:20:41,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:41,470 INFO L225 Difference]: With dead ends: 252 [2020-12-22 19:20:41,471 INFO L226 Difference]: Without dead ends: 252 [2020-12-22 19:20:41,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:20:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-22 19:20:41,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 237. [2020-12-22 19:20:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-22 19:20:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 307 transitions. [2020-12-22 19:20:41,480 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 307 transitions. Word has length 24 [2020-12-22 19:20:41,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:41,480 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 307 transitions. [2020-12-22 19:20:41,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:20:41,481 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 307 transitions. [2020-12-22 19:20:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:20:41,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:41,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:41,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 19:20:41,482 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:41,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1457055843, now seen corresponding path program 1 times [2020-12-22 19:20:41,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:41,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678715479] [2020-12-22 19:20:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 19:20:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:42,002 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 19:20:42,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678715479] [2020-12-22 19:20:42,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576028912] [2020-12-22 19:20:42,004 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 19:20:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:42,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 19:20:42,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:42,142 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:20:42,143 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:42,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:42,152 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:20:42,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-12-22 19:20:42,201 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:20:42,202 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:42,211 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:42,214 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:20:42,215 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2020-12-22 19:20:42,472 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:42,472 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2020-12-22 19:20:42,474 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:20:42,477 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:20:42,478 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:20:42,489 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:42,492 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:20:42,494 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:20:42,497 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:20:42,498 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:20:42,499 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:21 [2020-12-22 19:20:42,500 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:20:42,545 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 19:20:42,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:20:42,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2020-12-22 19:20:42,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542730729] [2020-12-22 19:20:42,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 19:20:42,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:42,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 19:20:42,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:20:42,548 INFO L87 Difference]: Start difference. First operand 237 states and 307 transitions. Second operand 23 states. [2020-12-22 19:20:43,571 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-22 19:20:43,706 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2020-12-22 19:20:45,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:45,993 INFO L93 Difference]: Finished difference Result 430 states and 510 transitions. [2020-12-22 19:20:45,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:20:45,993 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2020-12-22 19:20:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:45,997 INFO L225 Difference]: With dead ends: 430 [2020-12-22 19:20:45,997 INFO L226 Difference]: Without dead ends: 430 [2020-12-22 19:20:45,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=319, Invalid=1087, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 19:20:45,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-12-22 19:20:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 237. [2020-12-22 19:20:46,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-22 19:20:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 306 transitions. [2020-12-22 19:20:46,011 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 306 transitions. Word has length 25 [2020-12-22 19:20:46,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:46,011 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 306 transitions. [2020-12-22 19:20:46,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 19:20:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 306 transitions. [2020-12-22 19:20:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:20:46,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:46,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:46,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 19:20:46,227 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:46,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:46,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1457055844, now seen corresponding path program 1 times [2020-12-22 19:20:46,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:46,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053793713] [2020-12-22 19:20:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:46,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 19:20:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:46,413 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 19:20:46,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053793713] [2020-12-22 19:20:46,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671465121] [2020-12-22 19:20:46,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:46,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 19:20:46,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:46,599 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:20:46,601 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:46,611 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:46,617 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:20:46,618 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:46,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:46,632 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:20:46,633 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:29 [2020-12-22 19:20:46,802 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2020-12-22 19:20:46,804 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:46,813 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:46,816 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2020-12-22 19:20:46,818 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:46,823 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:46,823 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:20:46,824 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:11 [2020-12-22 19:20:46,852 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 19:20:46,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:20:46,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2020-12-22 19:20:46,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108309982] [2020-12-22 19:20:46,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:20:46,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:46,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:20:46,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:20:46,855 INFO L87 Difference]: Start difference. First operand 237 states and 306 transitions. Second operand 17 states. [2020-12-22 19:20:48,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:48,110 INFO L93 Difference]: Finished difference Result 398 states and 474 transitions. [2020-12-22 19:20:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 19:20:48,112 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-12-22 19:20:48,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:48,116 INFO L225 Difference]: With dead ends: 398 [2020-12-22 19:20:48,116 INFO L226 Difference]: Without dead ends: 398 [2020-12-22 19:20:48,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:20:48,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-12-22 19:20:48,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 255. [2020-12-22 19:20:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-12-22 19:20:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 328 transitions. [2020-12-22 19:20:48,128 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 328 transitions. Word has length 25 [2020-12-22 19:20:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:48,128 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 328 transitions. [2020-12-22 19:20:48,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:20:48,129 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 328 transitions. [2020-12-22 19:20:48,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:20:48,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:48,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:48,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:48,343 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:48,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:48,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1633976965, now seen corresponding path program 1 times [2020-12-22 19:20:48,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:48,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004259633] [2020-12-22 19:20:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:48,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:20:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:48,473 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 19:20:48,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004259633] [2020-12-22 19:20:48,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:20:48,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:20:48,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031052435] [2020-12-22 19:20:48,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:20:48,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:48,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:20:48,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:20:48,476 INFO L87 Difference]: Start difference. First operand 255 states and 328 transitions. Second operand 8 states. [2020-12-22 19:20:48,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:48,750 INFO L93 Difference]: Finished difference Result 283 states and 359 transitions. [2020-12-22 19:20:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:20:48,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-12-22 19:20:48,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:48,753 INFO L225 Difference]: With dead ends: 283 [2020-12-22 19:20:48,753 INFO L226 Difference]: Without dead ends: 283 [2020-12-22 19:20:48,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:20:48,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-12-22 19:20:48,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 266. [2020-12-22 19:20:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-22 19:20:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 342 transitions. [2020-12-22 19:20:48,764 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 342 transitions. Word has length 27 [2020-12-22 19:20:48,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:48,765 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 342 transitions. [2020-12-22 19:20:48,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:20:48,765 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 342 transitions. [2020-12-22 19:20:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:20:48,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:48,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:20:48,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 19:20:48,766 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:20:48,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:48,767 INFO L82 PathProgramCache]: Analyzing trace with hash -353927123, now seen corresponding path program 1 times [2020-12-22 19:20:48,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:48,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504213799] [2020-12-22 19:20:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:48,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 19:20:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:48,882 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 19:20:48,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504213799] [2020-12-22 19:20:48,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264178758] [2020-12-22 19:20:48,882 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 19:20:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:48,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-22 19:20:48,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:49,069 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:20:49,070 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:49,085 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:49,092 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:20:49,093 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:49,110 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:49,111 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:20:49,112 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:31 [2020-12-22 19:20:49,184 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:49,184 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 56 [2020-12-22 19:20:49,187 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:49,224 INFO L625 ElimStorePlain]: treesize reduction 26, result has 65.8 percent of original size [2020-12-22 19:20:49,254 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:49,255 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 56 [2020-12-22 19:20:49,257 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:20:49,309 INFO L625 ElimStorePlain]: treesize reduction 18, result has 75.0 percent of original size [2020-12-22 19:20:49,311 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:20:49,313 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:20:49,314 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:54, output treesize:54 [2020-12-22 19:20:49,316 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:20:49,364 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:20:49,679 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-12-22 19:20:49,680 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:20:50,085 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 3, 1] term [2020-12-22 19:20:50,085 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:20:50,090 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 7 disjuncts [2020-12-22 19:20:50,416 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:50,417 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 94 [2020-12-22 19:20:50,420 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 19:20:50,422 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 19:20:50,425 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:20:50,444 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:50,453 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:20:50,453 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 39 [2020-12-22 19:20:50,456 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:20:50,458 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:20:50,462 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:20:50,464 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2020-12-22 19:20:50,489 INFO L625 ElimStorePlain]: treesize reduction 7, result has 73.1 percent of original size [2020-12-22 19:20:50,491 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-22 19:20:50,492 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:110, output treesize:14 [2020-12-22 19:20:50,526 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:20:50,582 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 19:20:50,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:20:50,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16] total 22 [2020-12-22 19:20:50,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422860356] [2020-12-22 19:20:50,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 19:20:50,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:50,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 19:20:50,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:20:50,585 INFO L87 Difference]: Start difference. First operand 266 states and 342 transitions. Second operand 22 states. [2020-12-22 19:20:59,085 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-22 19:21:03,702 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-12-22 19:21:06,037 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-12-22 19:21:06,397 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-22 19:21:08,921 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-22 19:21:11,268 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-12-22 19:21:11,547 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-12-22 19:21:11,828 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-12-22 19:21:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:21:17,290 INFO L93 Difference]: Finished difference Result 377 states and 449 transitions. [2020-12-22 19:21:17,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:21:17,290 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 27 [2020-12-22 19:21:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:21:17,293 INFO L225 Difference]: With dead ends: 377 [2020-12-22 19:21:17,293 INFO L226 Difference]: Without dead ends: 371 [2020-12-22 19:21:17,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=280, Invalid=1202, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 19:21:17,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-12-22 19:21:17,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 273. [2020-12-22 19:21:17,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-12-22 19:21:17,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 347 transitions. [2020-12-22 19:21:17,307 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 347 transitions. Word has length 27 [2020-12-22 19:21:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:21:17,308 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 347 transitions. [2020-12-22 19:21:17,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 19:21:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 347 transitions. [2020-12-22 19:21:17,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:21:17,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:21:17,309 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:21:17,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:17,510 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:21:17,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:21:17,511 INFO L82 PathProgramCache]: Analyzing trace with hash 923786604, now seen corresponding path program 1 times [2020-12-22 19:21:17,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:21:17,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111757180] [2020-12-22 19:21:17,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:21:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:21:17,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111757180] [2020-12-22 19:21:17,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269268115] [2020-12-22 19:21:17,797 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 19:21:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:17,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 19:21:17,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:21:18,005 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:21:18,006 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:18,016 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:18,021 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:21:18,022 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:18,033 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:18,034 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:21:18,035 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:29 [2020-12-22 19:21:18,151 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2020-12-22 19:21:18,152 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:18,161 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:18,164 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2020-12-22 19:21:18,166 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:18,172 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:18,173 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:21:18,173 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:11 [2020-12-22 19:21:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:21:18,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:21:18,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2020-12-22 19:21:18,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504471813] [2020-12-22 19:21:18,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 19:21:18,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:21:18,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 19:21:18,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:21:18,279 INFO L87 Difference]: Start difference. First operand 273 states and 347 transitions. Second operand 22 states. [2020-12-22 19:21:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:21:19,535 INFO L93 Difference]: Finished difference Result 323 states and 398 transitions. [2020-12-22 19:21:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:21:19,536 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2020-12-22 19:21:19,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:21:19,539 INFO L225 Difference]: With dead ends: 323 [2020-12-22 19:21:19,539 INFO L226 Difference]: Without dead ends: 323 [2020-12-22 19:21:19,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:21:19,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-22 19:21:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 273. [2020-12-22 19:21:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-12-22 19:21:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 345 transitions. [2020-12-22 19:21:19,550 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 345 transitions. Word has length 28 [2020-12-22 19:21:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:21:19,550 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 345 transitions. [2020-12-22 19:21:19,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 19:21:19,551 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 345 transitions. [2020-12-22 19:21:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:21:19,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:21:19,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:21:19,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:21:19,767 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:21:19,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:21:19,768 INFO L82 PathProgramCache]: Analyzing trace with hash 427343141, now seen corresponding path program 1 times [2020-12-22 19:21:19,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:21:19,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639976177] [2020-12-22 19:21:19,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:21:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 19:21:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:20,189 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 19:21:20,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639976177] [2020-12-22 19:21:20,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351570284] [2020-12-22 19:21:20,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:20,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 19:21:20,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:21:20,348 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:21:20,349 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:20,354 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:20,355 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:21:20,356 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:10 [2020-12-22 19:21:24,493 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2020-12-22 19:21:24,494 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:21:24,496 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:21:24,497 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:21:24,497 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:4 [2020-12-22 19:21:24,525 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 19:21:24,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:21:24,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2020-12-22 19:21:24,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257937142] [2020-12-22 19:21:24,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:21:24,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:21:24,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:21:24,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=227, Unknown=2, NotChecked=0, Total=272 [2020-12-22 19:21:24,527 INFO L87 Difference]: Start difference. First operand 273 states and 345 transitions. Second operand 17 states. [2020-12-22 19:21:47,450 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2020-12-22 19:21:47,589 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-12-22 19:22:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:22:34,457 INFO L93 Difference]: Finished difference Result 364 states and 426 transitions. [2020-12-22 19:22:34,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 19:22:34,457 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 27 [2020-12-22 19:22:34,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:22:34,460 INFO L225 Difference]: With dead ends: 364 [2020-12-22 19:22:34,460 INFO L226 Difference]: Without dead ends: 364 [2020-12-22 19:22:34,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=178, Invalid=575, Unknown=3, NotChecked=0, Total=756 [2020-12-22 19:22:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-12-22 19:22:34,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 257. [2020-12-22 19:22:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-12-22 19:22:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 321 transitions. [2020-12-22 19:22:34,470 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 321 transitions. Word has length 27 [2020-12-22 19:22:34,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:22:34,470 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 321 transitions. [2020-12-22 19:22:34,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:22:34,470 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 321 transitions. [2020-12-22 19:22:34,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:22:34,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:22:34,471 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:22:34,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 19:22:34,685 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:22:34,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:22:34,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1442511059, now seen corresponding path program 1 times [2020-12-22 19:22:34,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:22:34,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778067109] [2020-12-22 19:22:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:22:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:22:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-12-22 19:22:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:22:34,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778067109] [2020-12-22 19:22:34,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:22:34,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:22:34,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870783393] [2020-12-22 19:22:34,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:22:34,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:22:34,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:22:34,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:22:34,726 INFO L87 Difference]: Start difference. First operand 257 states and 321 transitions. Second operand 4 states. [2020-12-22 19:22:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:22:34,765 INFO L93 Difference]: Finished difference Result 259 states and 308 transitions. [2020-12-22 19:22:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:22:34,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-12-22 19:22:34,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:22:34,767 INFO L225 Difference]: With dead ends: 259 [2020-12-22 19:22:34,767 INFO L226 Difference]: Without dead ends: 259 [2020-12-22 19:22:34,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 19:22:34,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-12-22 19:22:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 245. [2020-12-22 19:22:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-12-22 19:22:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 300 transitions. [2020-12-22 19:22:34,775 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 300 transitions. Word has length 29 [2020-12-22 19:22:34,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:22:34,775 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 300 transitions. [2020-12-22 19:22:34,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:22:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 300 transitions. [2020-12-22 19:22:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:22:34,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:22:34,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:22:34,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 19:22:34,776 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:22:34,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:22:34,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1697542573, now seen corresponding path program 1 times [2020-12-22 19:22:34,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:22:34,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13916821] [2020-12-22 19:22:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:22:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:22:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:34,848 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 19:22:34,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13916821] [2020-12-22 19:22:34,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:22:34,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 19:22:34,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799265588] [2020-12-22 19:22:34,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:22:34,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:22:34,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:22:34,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:22:34,851 INFO L87 Difference]: Start difference. First operand 245 states and 300 transitions. Second operand 7 states. [2020-12-22 19:22:35,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:22:35,130 INFO L93 Difference]: Finished difference Result 281 states and 339 transitions. [2020-12-22 19:22:35,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:22:35,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-22 19:22:35,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:22:35,133 INFO L225 Difference]: With dead ends: 281 [2020-12-22 19:22:35,133 INFO L226 Difference]: Without dead ends: 281 [2020-12-22 19:22:35,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:22:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-12-22 19:22:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 260. [2020-12-22 19:22:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-12-22 19:22:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 319 transitions. [2020-12-22 19:22:35,141 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 319 transitions. Word has length 29 [2020-12-22 19:22:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:22:35,141 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 319 transitions. [2020-12-22 19:22:35,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:22:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 319 transitions. [2020-12-22 19:22:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:22:35,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:22:35,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:22:35,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 19:22:35,143 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:22:35,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:22:35,143 INFO L82 PathProgramCache]: Analyzing trace with hash 793451563, now seen corresponding path program 1 times [2020-12-22 19:22:35,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:22:35,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713422532] [2020-12-22 19:22:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:22:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:35,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 19:22:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:35,644 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 19:22:35,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713422532] [2020-12-22 19:22:35,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835017229] [2020-12-22 19:22:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:22:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:35,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 19:22:35,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:22:35,807 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:22:35,808 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:35,817 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:35,822 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:22:35,823 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:35,832 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:35,833 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:35,833 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2020-12-22 19:22:35,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:35,873 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:22:35,874 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:35,887 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:35,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:35,893 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:22:35,895 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:35,907 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:35,908 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:35,908 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:47, output treesize:39 [2020-12-22 19:22:36,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,071 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2020-12-22 19:22:36,072 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:36,100 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:36,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,109 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2020-12-22 19:22:36,111 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:36,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:36,139 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:36,139 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:69, output treesize:61 [2020-12-22 19:22:36,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,219 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2020-12-22 19:22:36,220 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:36,260 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:36,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,271 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2020-12-22 19:22:36,273 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:36,309 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:36,310 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:36,311 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:87, output treesize:79 [2020-12-22 19:22:36,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,412 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2020-12-22 19:22:36,414 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:36,445 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:36,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:36,469 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:36,470 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 94 [2020-12-22 19:22:36,476 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:36,505 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:36,508 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:22:36,509 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:127, output treesize:93 [2020-12-22 19:22:37,155 INFO L443 ElimStorePlain]: Different costs {20=[|v_#memory_$Pointer$.offset_40|], 30=[|v_#memory_$Pointer$.base_43|]} [2020-12-22 19:22:37,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:37,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:37,272 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-12-22 19:22:37,273 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:37,273 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 111 treesize of output 281 [2020-12-22 19:22:37,278 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:22:37,280 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-12-22 19:22:37,281 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:22:37,282 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-12-22 19:22:37,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,285 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,287 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:22:37,288 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,290 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:22:37,292 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,294 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:22:37,295 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,296 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,298 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,299 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,302 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,303 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:37,305 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,306 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:22:37,307 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,309 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,311 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,312 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,314 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,315 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:37,317 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 19:22:37,318 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,319 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:37,321 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,322 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:37,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:37,326 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:22:37,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:22:37,329 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:22:37,330 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,331 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:37,333 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,335 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,337 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,339 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,341 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-12-22 19:22:37,342 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:22:37,343 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,346 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,347 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,349 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:22:37,351 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,356 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,357 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:22:37,358 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 19:22:37,359 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,360 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:37,362 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:37,363 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:22:37,365 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,367 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:37,369 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:22:37,370 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,372 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:37,374 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,375 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,378 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,381 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:22:37,382 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,383 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,385 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,386 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:37,388 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:37,389 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:22:37,391 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:22:37,578 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-12-22 19:22:37,579 INFO L625 ElimStorePlain]: treesize reduction 170, result has 46.7 percent of original size [2020-12-22 19:22:37,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:37,600 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:22:37,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:37,824 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-22 19:22:37,825 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:37,825 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 110 treesize of output 327 [2020-12-22 19:22:37,835 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:37,996 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 19:22:37,997 INFO L625 ElimStorePlain]: treesize reduction 37, result has 76.0 percent of original size [2020-12-22 19:22:38,003 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-12-22 19:22:38,003 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:22:38,004 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-22 19:22:38,004 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:22:38,005 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-22 19:22:38,005 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:22:38,007 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:22:38,008 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 19:22:38,008 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 19:22:38,012 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:38,013 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:38,015 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:38,017 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:22:38,017 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:162, output treesize:216 [2020-12-22 19:22:38,020 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:22:38,021 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:22:38,108 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:22:38,226 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:22:38,227 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:22:38,229 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:22:38,232 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:22:38,233 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:22:38,234 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:22:38,237 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:22:38,250 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:22:38,263 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:22:38,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:38,266 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:22:38,288 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:38,289 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 63 [2020-12-22 19:22:38,291 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:22:38,293 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:22:38,301 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:22:38,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:38,323 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:38,323 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 67 [2020-12-22 19:22:38,326 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:22:38,329 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:22:38,390 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:38,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:38,397 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:22:38,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:38,405 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:22:38,408 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 15 [2020-12-22 19:22:38,410 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:38,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:38,418 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:22:38,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:38,420 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 15 [2020-12-22 19:22:38,423 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:38,461 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:38,465 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:38,466 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:173, output treesize:7 [2020-12-22 19:22:38,485 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 19:22:38,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:22:38,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 25 [2020-12-22 19:22:38,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291825420] [2020-12-22 19:22:38,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 19:22:38,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:22:38,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 19:22:38,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:22:38,488 INFO L87 Difference]: Start difference. First operand 260 states and 319 transitions. Second operand 25 states. [2020-12-22 19:22:39,046 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-12-22 19:22:39,329 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-12-22 19:22:41,604 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2020-12-22 19:22:44,203 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-12-22 19:22:44,639 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-12-22 19:22:44,991 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2020-12-22 19:22:45,242 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2020-12-22 19:22:45,530 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-12-22 19:22:46,271 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-12-22 19:22:47,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:22:47,671 INFO L93 Difference]: Finished difference Result 416 states and 483 transitions. [2020-12-22 19:22:47,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 19:22:47,672 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 31 [2020-12-22 19:22:47,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:22:47,676 INFO L225 Difference]: With dead ends: 416 [2020-12-22 19:22:47,676 INFO L226 Difference]: Without dead ends: 416 [2020-12-22 19:22:47,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=396, Invalid=1858, Unknown=2, NotChecked=0, Total=2256 [2020-12-22 19:22:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-12-22 19:22:47,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 249. [2020-12-22 19:22:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-12-22 19:22:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 304 transitions. [2020-12-22 19:22:47,686 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 304 transitions. Word has length 31 [2020-12-22 19:22:47,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:22:47,686 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 304 transitions. [2020-12-22 19:22:47,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 19:22:47,686 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 304 transitions. [2020-12-22 19:22:47,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 19:22:47,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:22:47,687 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:22:47,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 19:22:47,901 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:22:47,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:22:47,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1113512885, now seen corresponding path program 1 times [2020-12-22 19:22:47,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:22:47,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406391364] [2020-12-22 19:22:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:22:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:22:48,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406391364] [2020-12-22 19:22:48,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119901951] [2020-12-22 19:22:48,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:22:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:48,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 19:22:48,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:22:48,587 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:22:48,588 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:48,601 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:48,605 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:22:48,606 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:48,617 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:48,618 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:48,618 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:30 [2020-12-22 19:22:48,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:48,682 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:22:48,683 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:48,696 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:48,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:48,702 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:22:48,703 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:48,714 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:48,716 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:48,716 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:50, output treesize:54 [2020-12-22 19:22:49,181 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:49,182 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 67 [2020-12-22 19:22:49,184 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 19:22:49,187 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:22:49,197 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:49,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:49,204 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 12 [2020-12-22 19:22:49,206 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:49,213 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:49,214 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:49,215 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:96, output treesize:7 [2020-12-22 19:22:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:22:49,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:22:49,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 27 [2020-12-22 19:22:49,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872110461] [2020-12-22 19:22:49,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-22 19:22:49,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:22:49,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-22 19:22:49,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:22:49,278 INFO L87 Difference]: Start difference. First operand 249 states and 304 transitions. Second operand 27 states. [2020-12-22 19:22:49,962 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2020-12-22 19:22:51,024 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-12-22 19:22:52,254 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-22 19:22:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:22:54,449 INFO L93 Difference]: Finished difference Result 336 states and 383 transitions. [2020-12-22 19:22:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 19:22:54,450 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 34 [2020-12-22 19:22:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:22:54,452 INFO L225 Difference]: With dead ends: 336 [2020-12-22 19:22:54,452 INFO L226 Difference]: Without dead ends: 336 [2020-12-22 19:22:54,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=349, Invalid=2101, Unknown=0, NotChecked=0, Total=2450 [2020-12-22 19:22:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-12-22 19:22:54,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 237. [2020-12-22 19:22:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-22 19:22:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 285 transitions. [2020-12-22 19:22:54,461 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 285 transitions. Word has length 34 [2020-12-22 19:22:54,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:22:54,461 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 285 transitions. [2020-12-22 19:22:54,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-22 19:22:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 285 transitions. [2020-12-22 19:22:54,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:22:54,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:22:54,462 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:22:54,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:22:54,676 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:22:54,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:22:54,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1295726731, now seen corresponding path program 1 times [2020-12-22 19:22:54,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:22:54,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31425405] [2020-12-22 19:22:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:22:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:54,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:22:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-12-22 19:22:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:22:54,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31425405] [2020-12-22 19:22:54,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:22:54,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:22:54,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552928585] [2020-12-22 19:22:54,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:22:54,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:22:54,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:22:54,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:22:54,732 INFO L87 Difference]: Start difference. First operand 237 states and 285 transitions. Second operand 5 states. [2020-12-22 19:22:54,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:22:54,763 INFO L93 Difference]: Finished difference Result 246 states and 294 transitions. [2020-12-22 19:22:54,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:22:54,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-12-22 19:22:54,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:22:54,765 INFO L225 Difference]: With dead ends: 246 [2020-12-22 19:22:54,765 INFO L226 Difference]: Without dead ends: 246 [2020-12-22 19:22:54,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:22:54,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-12-22 19:22:54,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 239. [2020-12-22 19:22:54,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-12-22 19:22:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 287 transitions. [2020-12-22 19:22:54,771 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 287 transitions. Word has length 35 [2020-12-22 19:22:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:22:54,772 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 287 transitions. [2020-12-22 19:22:54,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:22:54,772 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 287 transitions. [2020-12-22 19:22:54,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 19:22:54,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:22:54,773 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:22:54,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 19:22:54,773 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:22:54,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:22:54,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1512828144, now seen corresponding path program 1 times [2020-12-22 19:22:54,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:22:54,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074433220] [2020-12-22 19:22:54,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:22:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:54,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 19:22:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-12-22 19:22:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:54,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:22:54,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074433220] [2020-12-22 19:22:54,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:22:54,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:22:54,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053016306] [2020-12-22 19:22:54,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:22:54,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:22:54,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:22:54,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:22:54,820 INFO L87 Difference]: Start difference. First operand 239 states and 287 transitions. Second operand 4 states. [2020-12-22 19:22:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:22:54,924 INFO L93 Difference]: Finished difference Result 244 states and 292 transitions. [2020-12-22 19:22:54,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:22:54,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 19:22:54,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:22:54,926 INFO L225 Difference]: With dead ends: 244 [2020-12-22 19:22:54,926 INFO L226 Difference]: Without dead ends: 222 [2020-12-22 19:22:54,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:22:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-12-22 19:22:54,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 217. [2020-12-22 19:22:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-22 19:22:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 263 transitions. [2020-12-22 19:22:54,933 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 263 transitions. Word has length 36 [2020-12-22 19:22:54,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:22:54,933 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 263 transitions. [2020-12-22 19:22:54,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:22:54,933 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 263 transitions. [2020-12-22 19:22:54,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 19:22:54,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:22:54,934 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:22:54,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 19:22:54,935 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-22 19:22:54,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:22:54,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1874362859, now seen corresponding path program 1 times [2020-12-22 19:22:54,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:22:54,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727481701] [2020-12-22 19:22:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:22:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:55,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 19:22:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:55,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-12-22 19:22:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:22:55,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727481701] [2020-12-22 19:22:55,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035280020] [2020-12-22 19:22:55,156 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 19:22:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:22:55,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 70 conjunts are in the unsatisfiable core [2020-12-22 19:22:55,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:22:55,263 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:22:55,264 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,269 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:55,270 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,271 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:22:55,346 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:55,347 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:22:55,349 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,380 INFO L625 ElimStorePlain]: treesize reduction 14, result has 62.2 percent of original size [2020-12-22 19:22:55,381 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,381 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:23 [2020-12-22 19:22:55,426 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:22:55,427 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,450 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:55,455 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:22:55,456 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,478 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:55,479 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,479 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2020-12-22 19:22:55,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:55,541 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:22:55,543 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,570 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:55,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:55,576 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:22:55,577 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,602 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:55,603 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,603 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:66, output treesize:58 [2020-12-22 19:22:55,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:55,713 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:55,713 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 130 [2020-12-22 19:22:55,717 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,797 INFO L625 ElimStorePlain]: treesize reduction 70, result has 55.1 percent of original size [2020-12-22 19:22:55,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:22:55,804 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:22:55,818 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:22:55,819 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 62 [2020-12-22 19:22:55,821 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,896 INFO L625 ElimStorePlain]: treesize reduction 14, result has 84.1 percent of original size [2020-12-22 19:22:55,897 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:22:55,898 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:74 [2020-12-22 19:22:56,066 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:23:06,299 WARN L197 SmtUtils]: Spent 10.06 s on a formula simplification that was a NOOP. DAG size: 68 [2020-12-22 19:23:06,307 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-12-22 19:23:06,307 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:23:18,512 WARN L197 SmtUtils]: Spent 12.13 s on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 19:23:18,749 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 5, 1] term [2020-12-22 19:23:18,750 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-22 19:23:26,962 WARN L197 SmtUtils]: Spent 8.11 s on a formula simplification that was a NOOP. DAG size: 120 [2020-12-22 19:23:31,229 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 62 [2020-12-22 19:23:35,347 WARN L197 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 59 [2020-12-22 19:23:35,366 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 4, 1] term [2020-12-22 19:23:35,367 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:23:38,331 WARN L197 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 262 DAG size of output: 117 [2020-12-22 19:23:38,378 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:23:38,379 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 10 disjuncts [2020-12-22 19:23:38,714 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 37 [2020-12-22 19:23:38,873 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:23:38,873 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 75 [2020-12-22 19:23:38,876 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:23:38,900 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:23:38,902 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:23:38,902 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:129, output treesize:70 [2020-12-22 19:23:39,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:23:39,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:23:39,088 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:23:39,093 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:23:39,094 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 34 [2020-12-22 19:23:39,096 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:23:39,098 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:23:39,113 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:23:39,115 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:23:39,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:76, output treesize:19 [2020-12-22 19:23:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:23:39,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:23:39,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20] total 32 [2020-12-22 19:23:39,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316251941] [2020-12-22 19:23:39,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-22 19:23:39,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:23:39,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-22 19:23:39,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 19:23:39,208 INFO L87 Difference]: Start difference. First operand 217 states and 263 transitions. Second operand 33 states. [2020-12-22 19:23:40,053 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-12-22 19:23:40,264 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-22 19:23:56,787 WARN L197 SmtUtils]: Spent 16.27 s on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2020-12-22 19:24:17,250 WARN L197 SmtUtils]: Spent 18.24 s on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2020-12-22 19:24:17,599 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 19:24:20,077 WARN L197 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 167 DAG size of output: 78 [2020-12-22 19:24:20,240 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-22 19:24:40,704 WARN L197 SmtUtils]: Spent 18.30 s on a formula simplification. DAG size of input: 78 DAG size of output: 74