/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:59:58,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:59:58,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:59:58,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:59:58,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:59:58,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:59:58,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:59:58,208 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:59:58,268 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:59:58,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:59:58,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:59:58,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:59:58,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:59:58,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:59:58,275 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:59:58,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:59:58,275 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:59:58,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:59:58,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:59:58,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:59:58,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:59:58,277 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:59:58,278 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:59:58,278 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:59:58,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:59:58,278 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:59:58,278 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:59:58,278 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:59:58,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:59:58,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:59:58,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:59:58,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:59:58,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:59:58,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:59:58,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:59:58,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:59:58,280 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:59:58,281 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:59:58,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:59:58,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:59:58,281 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:59:58,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:59:58,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:59:58,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:59:58,742 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:59:58,743 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:59:58,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2021-10-08 17:59:58,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bb15e464/66310a38158241679b16270dcdaecc09/FLAG8f4db7d13 [2021-10-08 17:59:59,419 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:59:59,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2021-10-08 17:59:59,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bb15e464/66310a38158241679b16270dcdaecc09/FLAG8f4db7d13 [2021-10-08 17:59:59,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bb15e464/66310a38158241679b16270dcdaecc09 [2021-10-08 17:59:59,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:59:59,792 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:59:59,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:59:59,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:59:59,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:59:59,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:59:59" (1/1) ... [2021-10-08 17:59:59,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3295c30a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:59, skipping insertion in model container [2021-10-08 17:59:59,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:59:59" (1/1) ... [2021-10-08 17:59:59,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:59:59,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 18:00:00,020 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c[2030,2043] [2021-10-08 18:00:00,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:00:00,039 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 18:00:00,063 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c[2030,2043] [2021-10-08 18:00:00,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:00:00,084 INFO L208 MainTranslator]: Completed translation [2021-10-08 18:00:00,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00 WrapperNode [2021-10-08 18:00:00,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 18:00:00,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 18:00:00,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 18:00:00,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 18:00:00,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00" (1/1) ... [2021-10-08 18:00:00,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00" (1/1) ... [2021-10-08 18:00:00,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 18:00:00,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 18:00:00,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 18:00:00,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 18:00:00,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00" (1/1) ... [2021-10-08 18:00:00,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00" (1/1) ... [2021-10-08 18:00:00,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00" (1/1) ... [2021-10-08 18:00:00,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00" (1/1) ... [2021-10-08 18:00:00,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00" (1/1) ... [2021-10-08 18:00:00,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00" (1/1) ... [2021-10-08 18:00:00,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00" (1/1) ... [2021-10-08 18:00:00,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 18:00:00,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 18:00:00,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 18:00:00,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 18:00:00,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00" (1/1) ... [2021-10-08 18:00:00,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:00:00,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 18:00:00,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 18:00:00,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 18:00:00,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 18:00:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 18:00:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 18:00:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 18:00:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 18:00:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 18:00:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 18:00:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 18:00:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 18:00:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 18:00:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 18:00:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 18:00:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 18:00:00,300 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 18:00:01,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 18:00:01,078 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-08 18:00:01,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:00:01 BoogieIcfgContainer [2021-10-08 18:00:01,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 18:00:01,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 18:00:01,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 18:00:01,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 18:00:01,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:59:59" (1/3) ... [2021-10-08 18:00:01,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4479fdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:00:01, skipping insertion in model container [2021-10-08 18:00:01,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:00:00" (2/3) ... [2021-10-08 18:00:01,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4479fdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:00:01, skipping insertion in model container [2021-10-08 18:00:01,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:00:01" (3/3) ... [2021-10-08 18:00:01,114 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2021-10-08 18:00:01,124 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 18:00:01,125 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-08 18:00:01,125 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 18:00:01,178 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,178 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,178 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,179 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,180 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,180 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,180 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,181 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,181 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,181 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,182 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,182 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,182 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,182 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,183 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,183 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,183 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,183 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,184 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,184 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,184 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,184 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,186 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,187 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,187 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,188 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,188 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,188 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,189 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,190 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,190 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,191 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,191 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,191 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,192 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,192 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,192 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,193 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,196 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,196 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,196 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,196 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,197 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,197 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,201 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,202 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,202 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,202 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,203 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,205 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,206 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,206 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,206 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,206 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:00:01,217 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 18:00:01,298 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 18:00:01,313 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 18:00:01,314 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-08 18:00:01,338 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 18:00:01,353 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 85 transitions, 186 flow [2021-10-08 18:00:01,361 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 85 transitions, 186 flow [2021-10-08 18:00:01,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 186 flow [2021-10-08 18:00:01,434 INFO L129 PetriNetUnfolder]: 6/83 cut-off events. [2021-10-08 18:00:01,435 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 18:00:01,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 6/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-10-08 18:00:01,449 INFO L116 LiptonReduction]: Number of co-enabled transitions 540 [2021-10-08 18:00:09,808 INFO L131 LiptonReduction]: Checked pairs total: 656 [2021-10-08 18:00:09,808 INFO L133 LiptonReduction]: Total number of compositions: 88 [2021-10-08 18:00:09,820 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-08 18:00:09,836 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 18:00:09,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:09,846 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 18:00:09,846 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:09,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:09,853 INFO L82 PathProgramCache]: Analyzing trace with hash 355, now seen corresponding path program 1 times [2021-10-08 18:00:09,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:09,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517489935] [2021-10-08 18:00:09,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:00:09,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:09,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:09,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:09,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 18:00:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:09,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 18:00:09,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:09,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:09,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:09,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517489935] [2021-10-08 18:00:09,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517489935] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:00:09,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:00:09,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 18:00:09,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617442515] [2021-10-08 18:00:09,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 18:00:09,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 18:00:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 18:00:09,982 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:09,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:10,000 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-08 18:00:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 18:00:10,002 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-08 18:00:10,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:10,015 INFO L225 Difference]: With dead ends: 64 [2021-10-08 18:00:10,015 INFO L226 Difference]: Without dead ends: 64 [2021-10-08 18:00:10,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 18:00:10,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-08 18:00:10,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-08 18:00:10,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-08 18:00:10,080 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-08 18:00:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:10,080 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-08 18:00:10,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:10,081 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-08 18:00:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:00:10,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:10,082 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:00:10,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:10,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:10,294 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:10,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:10,296 INFO L82 PathProgramCache]: Analyzing trace with hash 349677, now seen corresponding path program 1 times [2021-10-08 18:00:10,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:10,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68883868] [2021-10-08 18:00:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:00:10,298 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:10,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:10,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:10,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 18:00:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:10,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:00:10,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:10,579 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 18:00:10,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-08 18:00:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:10,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:10,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:10,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68883868] [2021-10-08 18:00:10,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68883868] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:00:10,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:00:10,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:00:10,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287093875] [2021-10-08 18:00:10,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:00:10,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:10,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:00:10,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:00:10,806 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:10,841 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-08 18:00:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:00:10,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 18:00:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:10,844 INFO L225 Difference]: With dead ends: 58 [2021-10-08 18:00:10,844 INFO L226 Difference]: Without dead ends: 58 [2021-10-08 18:00:10,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:00:10,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-08 18:00:10,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-08 18:00:10,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-08 18:00:10,854 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-08 18:00:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:10,855 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-08 18:00:10,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:10,855 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-08 18:00:10,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:00:10,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:10,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:00:10,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:11,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:11,064 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:11,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:11,066 INFO L82 PathProgramCache]: Analyzing trace with hash 349679, now seen corresponding path program 1 times [2021-10-08 18:00:11,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:11,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414257502] [2021-10-08 18:00:11,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:00:11,068 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:11,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:11,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:11,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 18:00:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:11,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:00:11,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:11,135 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-08 18:00:11,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-08 18:00:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:11,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:11,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:11,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414257502] [2021-10-08 18:00:11,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414257502] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:00:11,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:00:11,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:00:11,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055187015] [2021-10-08 18:00:11,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:00:11,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:11,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:00:11,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:00:11,202 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:11,242 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-08 18:00:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:00:11,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 18:00:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:11,246 INFO L225 Difference]: With dead ends: 52 [2021-10-08 18:00:11,246 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 18:00:11,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:00:11,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 18:00:11,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-08 18:00:11,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-08 18:00:11,266 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-08 18:00:11,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:11,269 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-08 18:00:11,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-08 18:00:11,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:00:11,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:11,270 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:00:11,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:11,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:11,485 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:11,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:11,487 INFO L82 PathProgramCache]: Analyzing trace with hash 336048165, now seen corresponding path program 1 times [2021-10-08 18:00:11,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:11,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4806872] [2021-10-08 18:00:11,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:00:11,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:11,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:11,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:11,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 18:00:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:11,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:00:11,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:11,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:11,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:11,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4806872] [2021-10-08 18:00:11,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4806872] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:00:11,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:00:11,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:00:11,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723357878] [2021-10-08 18:00:11,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:00:11,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:11,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:00:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:00:11,735 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:11,765 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-08 18:00:11,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:00:11,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 18:00:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:11,768 INFO L225 Difference]: With dead ends: 43 [2021-10-08 18:00:11,769 INFO L226 Difference]: Without dead ends: 43 [2021-10-08 18:00:11,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:00:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-08 18:00:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-08 18:00:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-08 18:00:11,783 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-08 18:00:11,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:11,784 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-08 18:00:11,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:11,785 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-08 18:00:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:00:11,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:11,785 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:00:11,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:11,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:11,986 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:11,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:11,987 INFO L82 PathProgramCache]: Analyzing trace with hash 336048167, now seen corresponding path program 1 times [2021-10-08 18:00:11,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:11,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556927289] [2021-10-08 18:00:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:00:11,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:11,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:11,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:12,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 18:00:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:12,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:00:12,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:12,085 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-08 18:00:12,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-08 18:00:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:12,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:12,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:12,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556927289] [2021-10-08 18:00:12,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556927289] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:00:12,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:00:12,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:00:12,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931814165] [2021-10-08 18:00:12,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:00:12,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:12,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:00:12,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:00:12,149 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:12,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:12,168 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-08 18:00:12,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:00:12,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 18:00:12,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:12,170 INFO L225 Difference]: With dead ends: 34 [2021-10-08 18:00:12,170 INFO L226 Difference]: Without dead ends: 34 [2021-10-08 18:00:12,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:00:12,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-08 18:00:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-08 18:00:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-08 18:00:12,176 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-08 18:00:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:12,176 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-08 18:00:12,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:12,177 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-08 18:00:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:00:12,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:12,178 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:12,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-08 18:00:12,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:12,393 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:12,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:12,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1675638943, now seen corresponding path program 1 times [2021-10-08 18:00:12,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:12,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867740623] [2021-10-08 18:00:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:00:12,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:12,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:12,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:12,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 18:00:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:12,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:00:12,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:12,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:12,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:12,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867740623] [2021-10-08 18:00:12,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867740623] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:00:12,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:00:12,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:00:12,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464095417] [2021-10-08 18:00:12,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:00:12,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:12,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:00:12,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:00:12,584 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:12,601 INFO L93 Difference]: Finished difference Result 57 states and 124 transitions. [2021-10-08 18:00:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:00:12,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 18:00:12,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:12,603 INFO L225 Difference]: With dead ends: 57 [2021-10-08 18:00:12,603 INFO L226 Difference]: Without dead ends: 42 [2021-10-08 18:00:12,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:00:12,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-08 18:00:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-08 18:00:12,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2021-10-08 18:00:12,610 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2021-10-08 18:00:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:12,610 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2021-10-08 18:00:12,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2021-10-08 18:00:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:00:12,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:12,612 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:12,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-08 18:00:12,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:12,825 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:12,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1126908568, now seen corresponding path program 1 times [2021-10-08 18:00:12,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:12,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179461073] [2021-10-08 18:00:12,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:00:12,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:12,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:12,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:12,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 18:00:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:12,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:00:12,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:13,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:13,214 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:13,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179461073] [2021-10-08 18:00:13,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179461073] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:13,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:13,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-10-08 18:00:13,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315448692] [2021-10-08 18:00:13,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:00:13,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:13,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:00:13,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:00:13,217 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:13,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:13,508 INFO L93 Difference]: Finished difference Result 86 states and 189 transitions. [2021-10-08 18:00:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:00:13,509 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 18:00:13,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:13,511 INFO L225 Difference]: With dead ends: 86 [2021-10-08 18:00:13,511 INFO L226 Difference]: Without dead ends: 86 [2021-10-08 18:00:13,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 165.2ms TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:00:13,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-08 18:00:13,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 52. [2021-10-08 18:00:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-08 18:00:13,518 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-08 18:00:13,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:13,518 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-08 18:00:13,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:13,519 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-08 18:00:13,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:00:13,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:13,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:13,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:13,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:13,733 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:13,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:13,734 INFO L82 PathProgramCache]: Analyzing trace with hash -575365506, now seen corresponding path program 1 times [2021-10-08 18:00:13,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:13,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800738607] [2021-10-08 18:00:13,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:00:13,735 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:13,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:13,736 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:13,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 18:00:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:13,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:00:13,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:13,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:14,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:14,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800738607] [2021-10-08 18:00:14,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800738607] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:14,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:14,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3] total 4 [2021-10-08 18:00:14,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997954748] [2021-10-08 18:00:14,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:00:14,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:14,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:00:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:00:14,231 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:14,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:14,284 INFO L93 Difference]: Finished difference Result 95 states and 211 transitions. [2021-10-08 18:00:14,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:00:14,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:00:14,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:14,286 INFO L225 Difference]: With dead ends: 95 [2021-10-08 18:00:14,286 INFO L226 Difference]: Without dead ends: 76 [2021-10-08 18:00:14,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:00:14,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-08 18:00:14,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 64. [2021-10-08 18:00:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.3174603174603177) internal successors, (146), 63 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 146 transitions. [2021-10-08 18:00:14,293 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 146 transitions. Word has length 15 [2021-10-08 18:00:14,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:14,294 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 146 transitions. [2021-10-08 18:00:14,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:14,294 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 146 transitions. [2021-10-08 18:00:14,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:00:14,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:14,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:14,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:14,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:14,509 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:14,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:14,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1110258588, now seen corresponding path program 2 times [2021-10-08 18:00:14,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:14,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891460569] [2021-10-08 18:00:14,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:00:14,511 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:14,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:14,512 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:14,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 18:00:14,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:00:14,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:14,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:00:14,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:00:14,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:00:15,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:15,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891460569] [2021-10-08 18:00:15,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891460569] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:15,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:15,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 18:00:15,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630298349] [2021-10-08 18:00:15,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:00:15,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:15,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:00:15,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:00:15,055 INFO L87 Difference]: Start difference. First operand 64 states and 146 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:15,167 INFO L93 Difference]: Finished difference Result 84 states and 189 transitions. [2021-10-08 18:00:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:00:15,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:00:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:15,169 INFO L225 Difference]: With dead ends: 84 [2021-10-08 18:00:15,169 INFO L226 Difference]: Without dead ends: 80 [2021-10-08 18:00:15,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 105.2ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:00:15,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-08 18:00:15,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-08 18:00:15,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.305084745762712) internal successors, (136), 59 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 136 transitions. [2021-10-08 18:00:15,176 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 136 transitions. Word has length 15 [2021-10-08 18:00:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:15,177 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 136 transitions. [2021-10-08 18:00:15,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:15,177 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 136 transitions. [2021-10-08 18:00:15,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:00:15,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:15,178 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:15,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:15,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:15,392 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:15,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:15,393 INFO L82 PathProgramCache]: Analyzing trace with hash -879028985, now seen corresponding path program 3 times [2021-10-08 18:00:15,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:15,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894648898] [2021-10-08 18:00:15,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:00:15,395 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:15,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:15,396 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:15,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 18:00:15,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:00:15,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:15,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:15,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:15,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:16,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:16,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894648898] [2021-10-08 18:00:16,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894648898] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:16,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:16,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 18:00:16,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539433366] [2021-10-08 18:00:16,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:00:16,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:16,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:00:16,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:00:16,466 INFO L87 Difference]: Start difference. First operand 60 states and 136 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:18,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:18,631 INFO L93 Difference]: Finished difference Result 208 states and 492 transitions. [2021-10-08 18:00:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 18:00:18,632 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:00:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:18,634 INFO L225 Difference]: With dead ends: 208 [2021-10-08 18:00:18,634 INFO L226 Difference]: Without dead ends: 204 [2021-10-08 18:00:18,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1903.7ms TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 18:00:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-08 18:00:18,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 96. [2021-10-08 18:00:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.473684210526316) internal successors, (235), 95 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 235 transitions. [2021-10-08 18:00:18,644 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 235 transitions. Word has length 16 [2021-10-08 18:00:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:18,645 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 235 transitions. [2021-10-08 18:00:18,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 235 transitions. [2021-10-08 18:00:18,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:00:18,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:18,647 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:18,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:18,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:18,861 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:18,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:18,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1185387243, now seen corresponding path program 4 times [2021-10-08 18:00:18,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:18,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436659326] [2021-10-08 18:00:18,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:00:18,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:18,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:18,865 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:18,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 18:00:18,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:00:18,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:18,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:18,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:19,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:20,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:20,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436659326] [2021-10-08 18:00:20,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436659326] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:20,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:20,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 18:00:20,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364975068] [2021-10-08 18:00:20,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:00:20,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:20,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:00:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:00:20,249 INFO L87 Difference]: Start difference. First operand 96 states and 235 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:23,324 INFO L93 Difference]: Finished difference Result 224 states and 501 transitions. [2021-10-08 18:00:23,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 18:00:23,325 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:00:23,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:23,328 INFO L225 Difference]: With dead ends: 224 [2021-10-08 18:00:23,328 INFO L226 Difference]: Without dead ends: 224 [2021-10-08 18:00:23,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2871.4ms TimeCoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 18:00:23,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-08 18:00:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 106. [2021-10-08 18:00:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.552380952380952) internal successors, (268), 105 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 268 transitions. [2021-10-08 18:00:23,338 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 268 transitions. Word has length 16 [2021-10-08 18:00:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:23,339 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 268 transitions. [2021-10-08 18:00:23,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:23,339 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 268 transitions. [2021-10-08 18:00:23,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:00:23,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:23,340 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:23,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:23,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:23,553 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:23,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:23,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1413922067, now seen corresponding path program 5 times [2021-10-08 18:00:23,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:23,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583102257] [2021-10-08 18:00:23,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:00:23,556 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:23,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:23,557 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:23,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 18:00:23,696 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:00:23,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:23,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:23,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:23,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:24,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:24,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583102257] [2021-10-08 18:00:24,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583102257] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:24,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:24,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 18:00:24,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261405479] [2021-10-08 18:00:24,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:00:24,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:24,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:00:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:00:24,499 INFO L87 Difference]: Start difference. First operand 106 states and 268 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:26,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:26,680 INFO L93 Difference]: Finished difference Result 258 states and 618 transitions. [2021-10-08 18:00:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 18:00:26,681 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:00:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:26,684 INFO L225 Difference]: With dead ends: 258 [2021-10-08 18:00:26,684 INFO L226 Difference]: Without dead ends: 250 [2021-10-08 18:00:26,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1944.0ms TimeCoverageRelationStatistics Valid=359, Invalid=901, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 18:00:26,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-08 18:00:26,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 122. [2021-10-08 18:00:26,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.677685950413223) internal successors, (324), 121 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 324 transitions. [2021-10-08 18:00:26,694 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 324 transitions. Word has length 16 [2021-10-08 18:00:26,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:26,694 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 324 transitions. [2021-10-08 18:00:26,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:26,695 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 324 transitions. [2021-10-08 18:00:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:00:26,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:26,696 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:26,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:26,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:26,925 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:26,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:26,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1126660501, now seen corresponding path program 6 times [2021-10-08 18:00:26,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:26,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595588067] [2021-10-08 18:00:26,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:00:26,927 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:26,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:26,929 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:26,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 18:00:27,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:00:27,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:27,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:00:27,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:27,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:27,966 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:27,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595588067] [2021-10-08 18:00:27,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595588067] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:27,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:27,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 18:00:27,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999135083] [2021-10-08 18:00:27,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:00:27,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:00:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:00:27,969 INFO L87 Difference]: Start difference. First operand 122 states and 324 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:29,521 INFO L93 Difference]: Finished difference Result 164 states and 423 transitions. [2021-10-08 18:00:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:00:29,522 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:00:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:29,523 INFO L225 Difference]: With dead ends: 164 [2021-10-08 18:00:29,523 INFO L226 Difference]: Without dead ends: 162 [2021-10-08 18:00:29,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1491.0ms TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-10-08 18:00:29,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-08 18:00:29,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 122. [2021-10-08 18:00:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.644628099173554) internal successors, (320), 121 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 320 transitions. [2021-10-08 18:00:29,531 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 320 transitions. Word has length 16 [2021-10-08 18:00:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:29,532 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 320 transitions. [2021-10-08 18:00:29,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:29,532 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 320 transitions. [2021-10-08 18:00:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:00:29,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:29,533 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:29,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:29,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:29,746 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:29,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:29,747 INFO L82 PathProgramCache]: Analyzing trace with hash 209711663, now seen corresponding path program 7 times [2021-10-08 18:00:29,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:29,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098542497] [2021-10-08 18:00:29,748 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:00:29,748 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:29,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:29,750 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:29,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 18:00:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:29,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:29,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:30,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:31,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:31,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098542497] [2021-10-08 18:00:31,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098542497] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:31,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:31,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 18:00:31,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746883522] [2021-10-08 18:00:31,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:00:31,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:31,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:00:31,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:00:31,027 INFO L87 Difference]: Start difference. First operand 122 states and 320 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:33,800 INFO L93 Difference]: Finished difference Result 252 states and 601 transitions. [2021-10-08 18:00:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 18:00:33,802 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:00:33,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:33,803 INFO L225 Difference]: With dead ends: 252 [2021-10-08 18:00:33,803 INFO L226 Difference]: Without dead ends: 252 [2021-10-08 18:00:33,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2398.5ms TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2021-10-08 18:00:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-08 18:00:33,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 148. [2021-10-08 18:00:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.748299319727891) internal successors, (404), 147 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 404 transitions. [2021-10-08 18:00:33,813 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 404 transitions. Word has length 16 [2021-10-08 18:00:33,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:33,814 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 404 transitions. [2021-10-08 18:00:33,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 404 transitions. [2021-10-08 18:00:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:00:33,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:33,815 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:33,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-08 18:00:34,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:34,022 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:34,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:34,023 INFO L82 PathProgramCache]: Analyzing trace with hash -18823161, now seen corresponding path program 8 times [2021-10-08 18:00:34,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:34,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094310982] [2021-10-08 18:00:34,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:00:34,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:34,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:34,025 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:34,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 18:00:34,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:00:34,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:34,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:00:34,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:34,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:35,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:35,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:35,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094310982] [2021-10-08 18:00:35,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094310982] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:35,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:35,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 18:00:35,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230818320] [2021-10-08 18:00:35,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:00:35,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:35,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:00:35,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:00:35,103 INFO L87 Difference]: Start difference. First operand 148 states and 404 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:36,984 INFO L93 Difference]: Finished difference Result 276 states and 671 transitions. [2021-10-08 18:00:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 18:00:36,985 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:00:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:36,987 INFO L225 Difference]: With dead ends: 276 [2021-10-08 18:00:36,987 INFO L226 Difference]: Without dead ends: 268 [2021-10-08 18:00:36,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1721.3ms TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:00:36,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-08 18:00:36,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 148. [2021-10-08 18:00:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.741496598639456) internal successors, (403), 147 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:36,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 403 transitions. [2021-10-08 18:00:36,997 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 403 transitions. Word has length 16 [2021-10-08 18:00:36,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:36,998 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 403 transitions. [2021-10-08 18:00:36,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 403 transitions. [2021-10-08 18:00:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:00:36,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:36,999 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:37,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:37,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:37,208 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:37,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:37,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1773207889, now seen corresponding path program 9 times [2021-10-08 18:00:37,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:37,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129608931] [2021-10-08 18:00:37,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:00:37,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:37,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:37,211 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:37,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 18:00:37,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:00:37,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:37,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:00:37,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:37,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:38,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:38,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129608931] [2021-10-08 18:00:38,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129608931] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:38,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:38,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 18:00:38,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784626076] [2021-10-08 18:00:38,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:00:38,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:38,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:00:38,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:00:38,268 INFO L87 Difference]: Start difference. First operand 148 states and 403 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:39,565 INFO L93 Difference]: Finished difference Result 166 states and 443 transitions. [2021-10-08 18:00:39,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:00:39,566 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:00:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:39,567 INFO L225 Difference]: With dead ends: 166 [2021-10-08 18:00:39,567 INFO L226 Difference]: Without dead ends: 164 [2021-10-08 18:00:39,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1073.7ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:00:39,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-08 18:00:39,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 150. [2021-10-08 18:00:39,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.751677852348993) internal successors, (410), 149 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:39,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 410 transitions. [2021-10-08 18:00:39,575 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 410 transitions. Word has length 16 [2021-10-08 18:00:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:39,575 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 410 transitions. [2021-10-08 18:00:39,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:39,575 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 410 transitions. [2021-10-08 18:00:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:00:39,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:39,576 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:39,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:39,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:39,790 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:39,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1056210715, now seen corresponding path program 10 times [2021-10-08 18:00:39,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:39,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036093403] [2021-10-08 18:00:39,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:00:39,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:39,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:39,794 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:39,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 18:00:39,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:00:39,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:39,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:39,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:40,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:40,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:40,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036093403] [2021-10-08 18:00:40,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036093403] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:40,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:40,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 18:00:40,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455571577] [2021-10-08 18:00:40,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:00:40,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:40,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:00:40,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:00:40,924 INFO L87 Difference]: Start difference. First operand 150 states and 410 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:43,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:43,462 INFO L93 Difference]: Finished difference Result 276 states and 688 transitions. [2021-10-08 18:00:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 18:00:43,463 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:00:43,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:43,466 INFO L225 Difference]: With dead ends: 276 [2021-10-08 18:00:43,466 INFO L226 Difference]: Without dead ends: 276 [2021-10-08 18:00:43,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2272.6ms TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2021-10-08 18:00:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-08 18:00:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 158. [2021-10-08 18:00:43,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.7961783439490446) internal successors, (439), 157 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:43,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 439 transitions. [2021-10-08 18:00:43,477 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 439 transitions. Word has length 16 [2021-10-08 18:00:43,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:43,477 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 439 transitions. [2021-10-08 18:00:43,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:43,478 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 439 transitions. [2021-10-08 18:00:43,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:00:43,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:43,479 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:43,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:43,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:43,692 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:43,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:43,693 INFO L82 PathProgramCache]: Analyzing trace with hash 827675891, now seen corresponding path program 11 times [2021-10-08 18:00:43,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:43,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724753649] [2021-10-08 18:00:43,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:00:43,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:43,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:43,696 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:43,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 18:00:43,908 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:00:43,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:43,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:00:43,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:44,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:44,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:44,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724753649] [2021-10-08 18:00:44,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724753649] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:44,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:44,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 18:00:44,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784606312] [2021-10-08 18:00:44,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:00:44,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:44,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:00:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:00:44,725 INFO L87 Difference]: Start difference. First operand 158 states and 439 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:46,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:46,911 INFO L93 Difference]: Finished difference Result 310 states and 767 transitions. [2021-10-08 18:00:46,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 18:00:46,912 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:00:46,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:46,915 INFO L225 Difference]: With dead ends: 310 [2021-10-08 18:00:46,915 INFO L226 Difference]: Without dead ends: 302 [2021-10-08 18:00:46,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1953.3ms TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2021-10-08 18:00:46,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-10-08 18:00:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 154. [2021-10-08 18:00:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.7712418300653594) internal successors, (424), 153 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:46,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 424 transitions. [2021-10-08 18:00:46,924 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 424 transitions. Word has length 16 [2021-10-08 18:00:46,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:46,924 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 424 transitions. [2021-10-08 18:00:46,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:46,925 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 424 transitions. [2021-10-08 18:00:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:00:46,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:46,926 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:46,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:47,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:47,137 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:47,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:47,137 INFO L82 PathProgramCache]: Analyzing trace with hash -926708837, now seen corresponding path program 12 times [2021-10-08 18:00:47,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:47,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191046945] [2021-10-08 18:00:47,138 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:00:47,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:47,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:47,140 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:47,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 18:00:47,379 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:00:47,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:47,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:00:47,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:47,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:48,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:48,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191046945] [2021-10-08 18:00:48,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191046945] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:48,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:48,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 18:00:48,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822991608] [2021-10-08 18:00:48,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:00:48,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:00:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:00:48,141 INFO L87 Difference]: Start difference. First operand 154 states and 424 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:49,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:49,461 INFO L93 Difference]: Finished difference Result 188 states and 508 transitions. [2021-10-08 18:00:49,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:00:49,462 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:00:49,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:49,463 INFO L225 Difference]: With dead ends: 188 [2021-10-08 18:00:49,464 INFO L226 Difference]: Without dead ends: 186 [2021-10-08 18:00:49,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1283.7ms TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:00:49,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-08 18:00:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 140. [2021-10-08 18:00:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.7553956834532376) internal successors, (383), 139 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 383 transitions. [2021-10-08 18:00:49,481 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 383 transitions. Word has length 16 [2021-10-08 18:00:49,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:49,481 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 383 transitions. [2021-10-08 18:00:49,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 383 transitions. [2021-10-08 18:00:49,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:00:49,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:49,483 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:49,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:49,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:49,696 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:49,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:49,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1481033025, now seen corresponding path program 13 times [2021-10-08 18:00:49,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:49,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061243531] [2021-10-08 18:00:49,698 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:00:49,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:49,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:49,699 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:49,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 18:00:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:49,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:00:49,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:50,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:50,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:50,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061243531] [2021-10-08 18:00:50,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061243531] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:50,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:50,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 7 [2021-10-08 18:00:50,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585040112] [2021-10-08 18:00:50,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 18:00:50,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:50,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 18:00:50,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:00:50,424 INFO L87 Difference]: Start difference. First operand 140 states and 383 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:50,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:50,492 INFO L93 Difference]: Finished difference Result 217 states and 561 transitions. [2021-10-08 18:00:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:00:50,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:00:50,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:50,495 INFO L225 Difference]: With dead ends: 217 [2021-10-08 18:00:50,495 INFO L226 Difference]: Without dead ends: 194 [2021-10-08 18:00:50,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:00:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-08 18:00:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2021-10-08 18:00:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.705521472392638) internal successors, (441), 163 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 441 transitions. [2021-10-08 18:00:50,503 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 441 transitions. Word has length 17 [2021-10-08 18:00:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:50,503 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 441 transitions. [2021-10-08 18:00:50,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 441 transitions. [2021-10-08 18:00:50,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:00:50,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:50,504 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:50,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:50,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:50,705 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:50,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1243860216, now seen corresponding path program 14 times [2021-10-08 18:00:50,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:50,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138125662] [2021-10-08 18:00:50,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:00:50,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:50,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:50,709 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:50,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 18:00:50,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:00:50,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:50,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:00:50,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:51,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:52,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:52,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138125662] [2021-10-08 18:00:52,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138125662] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:52,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:52,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:00:52,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256204929] [2021-10-08 18:00:52,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:00:52,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:52,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:00:52,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:00:52,678 INFO L87 Difference]: Start difference. First operand 164 states and 441 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:57,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:57,522 INFO L93 Difference]: Finished difference Result 374 states and 957 transitions. [2021-10-08 18:00:57,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:00:57,523 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:00:57,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:57,526 INFO L225 Difference]: With dead ends: 374 [2021-10-08 18:00:57,526 INFO L226 Difference]: Without dead ends: 374 [2021-10-08 18:00:57,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 4834.1ms TimeCoverageRelationStatistics Valid=491, Invalid=1489, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:00:57,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-10-08 18:00:57,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 182. [2021-10-08 18:00:57,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.734806629834254) internal successors, (495), 181 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 495 transitions. [2021-10-08 18:00:57,538 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 495 transitions. Word has length 18 [2021-10-08 18:00:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:57,540 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 495 transitions. [2021-10-08 18:00:57,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 495 transitions. [2021-10-08 18:00:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:00:57,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:57,542 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:57,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:57,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:57,756 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:57,756 INFO L82 PathProgramCache]: Analyzing trace with hash 2143935674, now seen corresponding path program 15 times [2021-10-08 18:00:57,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:57,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544985231] [2021-10-08 18:00:57,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:00:57,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:57,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:57,759 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:57,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 18:00:58,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:00:58,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:58,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:00:58,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:58,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:59,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:59,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544985231] [2021-10-08 18:00:59,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544985231] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:59,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:59,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:00:59,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110776455] [2021-10-08 18:00:59,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:00:59,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:59,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:00:59,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:00:59,398 INFO L87 Difference]: Start difference. First operand 182 states and 495 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:05,342 INFO L93 Difference]: Finished difference Result 362 states and 878 transitions. [2021-10-08 18:01:05,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 18:01:05,344 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:01:05,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:05,346 INFO L225 Difference]: With dead ends: 362 [2021-10-08 18:01:05,347 INFO L226 Difference]: Without dead ends: 358 [2021-10-08 18:01:05,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 5729.1ms TimeCoverageRelationStatistics Valid=585, Invalid=1767, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 18:01:05,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-08 18:01:05,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 220. [2021-10-08 18:01:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.6940639269406392) internal successors, (590), 219 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 590 transitions. [2021-10-08 18:01:05,359 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 590 transitions. Word has length 18 [2021-10-08 18:01:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:05,359 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 590 transitions. [2021-10-08 18:01:05,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:05,360 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 590 transitions. [2021-10-08 18:01:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:01:05,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:05,361 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:05,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:05,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:05,574 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:05,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:05,575 INFO L82 PathProgramCache]: Analyzing trace with hash -645676574, now seen corresponding path program 16 times [2021-10-08 18:01:05,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:05,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721937590] [2021-10-08 18:01:05,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:01:05,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:05,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:05,578 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:05,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 18:01:05,877 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:01:05,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:05,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:01:05,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:06,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:07,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:07,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721937590] [2021-10-08 18:01:07,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721937590] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:07,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:07,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:01:07,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325791783] [2021-10-08 18:01:07,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:01:07,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:07,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:01:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:01:07,774 INFO L87 Difference]: Start difference. First operand 220 states and 590 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:16,779 INFO L93 Difference]: Finished difference Result 478 states and 1164 transitions. [2021-10-08 18:01:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 18:01:16,780 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:01:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:16,783 INFO L225 Difference]: With dead ends: 478 [2021-10-08 18:01:16,784 INFO L226 Difference]: Without dead ends: 454 [2021-10-08 18:01:16,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 8993.5ms TimeCoverageRelationStatistics Valid=498, Invalid=1854, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 18:01:16,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-08 18:01:16,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 240. [2021-10-08 18:01:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 2.7531380753138075) internal successors, (658), 239 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 658 transitions. [2021-10-08 18:01:16,798 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 658 transitions. Word has length 18 [2021-10-08 18:01:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:16,799 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 658 transitions. [2021-10-08 18:01:16,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 658 transitions. [2021-10-08 18:01:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:01:16,800 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:16,800 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:16,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:17,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:17,015 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:17,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:17,015 INFO L82 PathProgramCache]: Analyzing trace with hash -874211398, now seen corresponding path program 17 times [2021-10-08 18:01:17,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:17,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905115599] [2021-10-08 18:01:17,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:01:17,016 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:17,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:17,018 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:17,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 18:01:17,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:01:17,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:17,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:01:17,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:17,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:18,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:18,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905115599] [2021-10-08 18:01:18,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905115599] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:18,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:18,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:01:18,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014280623] [2021-10-08 18:01:18,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:01:18,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:18,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:01:18,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:01:18,892 INFO L87 Difference]: Start difference. First operand 240 states and 658 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:24,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:24,703 INFO L93 Difference]: Finished difference Result 484 states and 1232 transitions. [2021-10-08 18:01:24,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 18:01:24,704 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:01:24,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:24,706 INFO L225 Difference]: With dead ends: 484 [2021-10-08 18:01:24,707 INFO L226 Difference]: Without dead ends: 476 [2021-10-08 18:01:24,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 5512.9ms TimeCoverageRelationStatistics Valid=613, Invalid=1739, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 18:01:24,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-08 18:01:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 250. [2021-10-08 18:01:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 2.783132530120482) internal successors, (693), 249 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 693 transitions. [2021-10-08 18:01:24,728 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 693 transitions. Word has length 18 [2021-10-08 18:01:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:24,729 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 693 transitions. [2021-10-08 18:01:24,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 693 transitions. [2021-10-08 18:01:24,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:01:24,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:24,730 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:24,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:24,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:24,944 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:24,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1666371170, now seen corresponding path program 18 times [2021-10-08 18:01:24,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:24,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170299750] [2021-10-08 18:01:24,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:01:24,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:24,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:24,947 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:24,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 18:01:25,323 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 18:01:25,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:25,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:01:25,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:25,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:26,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:26,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170299750] [2021-10-08 18:01:26,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170299750] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:26,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:26,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 18:01:26,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76212293] [2021-10-08 18:01:26,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:01:26,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:26,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:01:26,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:01:26,467 INFO L87 Difference]: Start difference. First operand 250 states and 693 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:29,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:29,271 INFO L93 Difference]: Finished difference Result 322 states and 874 transitions. [2021-10-08 18:01:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 18:01:29,272 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:01:29,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:29,274 INFO L225 Difference]: With dead ends: 322 [2021-10-08 18:01:29,275 INFO L226 Difference]: Without dead ends: 320 [2021-10-08 18:01:29,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2708.4ms TimeCoverageRelationStatistics Valid=377, Invalid=883, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 18:01:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-10-08 18:01:29,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 252. [2021-10-08 18:01:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.7968127490039842) internal successors, (702), 251 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 702 transitions. [2021-10-08 18:01:29,286 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 702 transitions. Word has length 18 [2021-10-08 18:01:29,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:29,286 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 702 transitions. [2021-10-08 18:01:29,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:29,287 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 702 transitions. [2021-10-08 18:01:29,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:01:29,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:29,288 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:29,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:29,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:29,502 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:29,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1852638496, now seen corresponding path program 19 times [2021-10-08 18:01:29,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:29,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785013462] [2021-10-08 18:01:29,503 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:01:29,504 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:29,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:29,505 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:29,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 18:01:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:01:29,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:01:29,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:30,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:32,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:32,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785013462] [2021-10-08 18:01:32,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785013462] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:32,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:32,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:01:32,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543595718] [2021-10-08 18:01:32,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:01:32,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:01:32,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:01:32,177 INFO L87 Difference]: Start difference. First operand 252 states and 702 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:40,857 INFO L93 Difference]: Finished difference Result 418 states and 1043 transitions. [2021-10-08 18:01:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 18:01:40,859 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:01:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:40,861 INFO L225 Difference]: With dead ends: 418 [2021-10-08 18:01:40,861 INFO L226 Difference]: Without dead ends: 418 [2021-10-08 18:01:40,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 8426.3ms TimeCoverageRelationStatistics Valid=433, Invalid=1547, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:01:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-08 18:01:40,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 260. [2021-10-08 18:01:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.810810810810811) internal successors, (728), 259 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:40,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 728 transitions. [2021-10-08 18:01:40,874 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 728 transitions. Word has length 18 [2021-10-08 18:01:40,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:40,874 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 728 transitions. [2021-10-08 18:01:40,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 728 transitions. [2021-10-08 18:01:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:01:40,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:40,876 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:40,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-08 18:01:41,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:41,089 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:41,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:41,090 INFO L82 PathProgramCache]: Analyzing trace with hash -741724506, now seen corresponding path program 20 times [2021-10-08 18:01:41,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:41,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418195371] [2021-10-08 18:01:41,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:01:41,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:41,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:41,093 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:41,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 18:01:41,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:01:41,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:41,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:01:41,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:41,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:43,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:43,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418195371] [2021-10-08 18:01:43,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418195371] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:43,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:43,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:01:43,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948741132] [2021-10-08 18:01:43,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:01:43,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:43,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:01:43,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:01:43,470 INFO L87 Difference]: Start difference. First operand 260 states and 728 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:50,872 INFO L93 Difference]: Finished difference Result 516 states and 1301 transitions. [2021-10-08 18:01:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:01:50,873 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:01:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:50,875 INFO L225 Difference]: With dead ends: 516 [2021-10-08 18:01:50,875 INFO L226 Difference]: Without dead ends: 508 [2021-10-08 18:01:50,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 6776.6ms TimeCoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:01:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-10-08 18:01:50,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 290. [2021-10-08 18:01:50,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.889273356401384) internal successors, (835), 289 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 835 transitions. [2021-10-08 18:01:50,888 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 835 transitions. Word has length 18 [2021-10-08 18:01:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:50,889 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 835 transitions. [2021-10-08 18:01:50,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 835 transitions. [2021-10-08 18:01:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:01:50,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:50,890 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:50,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:51,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:51,100 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:51,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:51,101 INFO L82 PathProgramCache]: Analyzing trace with hash -575818272, now seen corresponding path program 21 times [2021-10-08 18:01:51,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:51,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060238161] [2021-10-08 18:01:51,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:01:51,102 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:51,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:51,104 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:51,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 18:01:51,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 18:01:51,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:51,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:01:51,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:51,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:53,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:53,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060238161] [2021-10-08 18:01:53,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060238161] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:53,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:53,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:01:53,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776879010] [2021-10-08 18:01:53,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:01:53,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:53,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:01:53,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:01:53,353 INFO L87 Difference]: Start difference. First operand 290 states and 835 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:02,131 INFO L93 Difference]: Finished difference Result 526 states and 1363 transitions. [2021-10-08 18:02:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:02:02,133 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:02:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:02,135 INFO L225 Difference]: With dead ends: 526 [2021-10-08 18:02:02,135 INFO L226 Difference]: Without dead ends: 518 [2021-10-08 18:02:02,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 8204.8ms TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 18:02:02,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-08 18:02:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 304. [2021-10-08 18:02:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 2.924092409240924) internal successors, (886), 303 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 886 transitions. [2021-10-08 18:02:02,149 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 886 transitions. Word has length 18 [2021-10-08 18:02:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:02,149 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 886 transitions. [2021-10-08 18:02:02,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 886 transitions. [2021-10-08 18:02:02,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:02:02,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:02,151 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:02,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:02,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:02,365 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:02,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:02,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1964764296, now seen corresponding path program 22 times [2021-10-08 18:02:02,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:02,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539345732] [2021-10-08 18:02:02,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:02:02,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:02,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:02,369 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:02,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 18:02:02,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:02:02,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:02,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:02:02,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:03,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:04,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:04,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539345732] [2021-10-08 18:02:04,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539345732] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:04,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:04,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:02:04,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718406479] [2021-10-08 18:02:04,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 18:02:04,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:04,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 18:02:04,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:02:04,216 INFO L87 Difference]: Start difference. First operand 304 states and 886 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:09,312 INFO L93 Difference]: Finished difference Result 378 states and 1104 transitions. [2021-10-08 18:02:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:02:09,313 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:02:09,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:09,315 INFO L225 Difference]: With dead ends: 378 [2021-10-08 18:02:09,315 INFO L226 Difference]: Without dead ends: 372 [2021-10-08 18:02:09,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 4739.4ms TimeCoverageRelationStatistics Valid=413, Invalid=1069, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 18:02:09,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-08 18:02:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 322. [2021-10-08 18:02:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 2.9626168224299065) internal successors, (951), 321 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 951 transitions. [2021-10-08 18:02:09,325 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 951 transitions. Word has length 18 [2021-10-08 18:02:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:09,326 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 951 transitions. [2021-10-08 18:02:09,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 951 transitions. [2021-10-08 18:02:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:02:09,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:09,327 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:09,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:09,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:09,541 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:09,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:09,542 INFO L82 PathProgramCache]: Analyzing trace with hash 174817474, now seen corresponding path program 23 times [2021-10-08 18:02:09,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:09,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841122149] [2021-10-08 18:02:09,543 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:02:09,543 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:09,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:09,544 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:09,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 18:02:09,982 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:02:09,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:09,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:02:09,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:10,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:11,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:11,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841122149] [2021-10-08 18:02:11,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841122149] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:11,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:11,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:02:11,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536354690] [2021-10-08 18:02:11,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:02:11,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:02:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:02:11,692 INFO L87 Difference]: Start difference. First operand 322 states and 951 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:20,500 INFO L93 Difference]: Finished difference Result 574 states and 1482 transitions. [2021-10-08 18:02:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 18:02:20,501 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:02:20,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:20,505 INFO L225 Difference]: With dead ends: 574 [2021-10-08 18:02:20,505 INFO L226 Difference]: Without dead ends: 546 [2021-10-08 18:02:20,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 8572.8ms TimeCoverageRelationStatistics Valid=639, Invalid=2441, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 18:02:20,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-10-08 18:02:20,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 340. [2021-10-08 18:02:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 2.9793510324483776) internal successors, (1010), 339 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:20,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1010 transitions. [2021-10-08 18:02:20,533 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1010 transitions. Word has length 18 [2021-10-08 18:02:20,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:20,533 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1010 transitions. [2021-10-08 18:02:20,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1010 transitions. [2021-10-08 18:02:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:02:20,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:20,535 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:20,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:20,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:20,749 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:20,750 INFO L82 PathProgramCache]: Analyzing trace with hash -91542310, now seen corresponding path program 24 times [2021-10-08 18:02:20,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:20,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394219338] [2021-10-08 18:02:20,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:02:20,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:20,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:20,752 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:20,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 18:02:21,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 18:02:21,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:21,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:02:21,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:21,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:22,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:22,933 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:22,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394219338] [2021-10-08 18:02:22,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394219338] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:22,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:22,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 18:02:22,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231909582] [2021-10-08 18:02:22,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:02:22,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:22,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:02:22,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:02:22,935 INFO L87 Difference]: Start difference. First operand 340 states and 1010 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:31,448 INFO L93 Difference]: Finished difference Result 556 states and 1495 transitions. [2021-10-08 18:02:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 18:02:31,449 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:02:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:31,452 INFO L225 Difference]: With dead ends: 556 [2021-10-08 18:02:31,452 INFO L226 Difference]: Without dead ends: 552 [2021-10-08 18:02:31,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 8166.6ms TimeCoverageRelationStatistics Valid=601, Invalid=1849, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 18:02:31,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-10-08 18:02:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 372. [2021-10-08 18:02:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.045822102425876) internal successors, (1130), 371 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:31,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1130 transitions. [2021-10-08 18:02:31,467 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1130 transitions. Word has length 18 [2021-10-08 18:02:31,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:31,467 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 1130 transitions. [2021-10-08 18:02:31,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:31,468 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1130 transitions. [2021-10-08 18:02:31,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:02:31,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:31,469 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:31,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-08 18:02:31,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:31,684 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:31,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:31,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1192386182, now seen corresponding path program 25 times [2021-10-08 18:02:31,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:31,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044012181] [2021-10-08 18:02:31,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:02:31,686 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:31,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:31,688 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:31,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 18:02:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:02:32,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:02:32,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:32,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:34,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:34,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044012181] [2021-10-08 18:02:34,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044012181] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:34,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:34,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:02:34,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792686888] [2021-10-08 18:02:34,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:02:34,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:34,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:02:34,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:02:34,837 INFO L87 Difference]: Start difference. First operand 372 states and 1130 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:43,372 INFO L93 Difference]: Finished difference Result 554 states and 1517 transitions. [2021-10-08 18:02:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:02:43,373 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:02:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:43,376 INFO L225 Difference]: With dead ends: 554 [2021-10-08 18:02:43,377 INFO L226 Difference]: Without dead ends: 554 [2021-10-08 18:02:43,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 8486.5ms TimeCoverageRelationStatistics Valid=379, Invalid=1343, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 18:02:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-10-08 18:02:43,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 402. [2021-10-08 18:02:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.039900249376559) internal successors, (1219), 401 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1219 transitions. [2021-10-08 18:02:43,390 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1219 transitions. Word has length 18 [2021-10-08 18:02:43,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:43,390 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 1219 transitions. [2021-10-08 18:02:43,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1219 transitions. [2021-10-08 18:02:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:02:43,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:43,392 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:43,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-08 18:02:43,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:43,600 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:43,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:43,601 INFO L82 PathProgramCache]: Analyzing trace with hash -81472192, now seen corresponding path program 26 times [2021-10-08 18:02:43,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:43,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333006596] [2021-10-08 18:02:43,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:02:43,602 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:43,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:43,603 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:43,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 18:02:44,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:02:44,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:44,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:02:44,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:44,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:46,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:46,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333006596] [2021-10-08 18:02:46,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333006596] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:46,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:46,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:02:46,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912344500] [2021-10-08 18:02:46,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:02:46,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:02:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:02:46,372 INFO L87 Difference]: Start difference. First operand 402 states and 1219 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:53,873 INFO L93 Difference]: Finished difference Result 666 states and 1833 transitions. [2021-10-08 18:02:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:02:53,874 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:02:53,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:53,877 INFO L225 Difference]: With dead ends: 666 [2021-10-08 18:02:53,877 INFO L226 Difference]: Without dead ends: 658 [2021-10-08 18:02:53,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 6772.8ms TimeCoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 18:02:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-08 18:02:53,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 434. [2021-10-08 18:02:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 3.087759815242494) internal successors, (1337), 433 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1337 transitions. [2021-10-08 18:02:53,896 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1337 transitions. Word has length 18 [2021-10-08 18:02:53,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:53,896 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1337 transitions. [2021-10-08 18:02:53,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1337 transitions. [2021-10-08 18:02:53,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:02:53,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:53,898 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:53,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:54,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:54,111 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:54,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:54,112 INFO L82 PathProgramCache]: Analyzing trace with hash 84434042, now seen corresponding path program 27 times [2021-10-08 18:02:54,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:54,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179128950] [2021-10-08 18:02:54,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:02:54,113 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:54,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:54,115 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:54,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 18:02:54,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 18:02:54,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:54,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:02:54,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:54,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:56,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:56,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179128950] [2021-10-08 18:02:56,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179128950] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:56,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:56,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:02:56,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677825035] [2021-10-08 18:02:56,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:02:56,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:02:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:02:56,670 INFO L87 Difference]: Start difference. First operand 434 states and 1337 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:04,063 INFO L93 Difference]: Finished difference Result 672 states and 1893 transitions. [2021-10-08 18:03:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:03:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:03:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:04,069 INFO L225 Difference]: With dead ends: 672 [2021-10-08 18:03:04,070 INFO L226 Difference]: Without dead ends: 664 [2021-10-08 18:03:04,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 6616.2ms TimeCoverageRelationStatistics Valid=403, Invalid=1079, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 18:03:04,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-08 18:03:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 452. [2021-10-08 18:03:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 3.1219512195121952) internal successors, (1408), 451 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1408 transitions. [2021-10-08 18:03:04,087 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1408 transitions. Word has length 18 [2021-10-08 18:03:04,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:04,087 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1408 transitions. [2021-10-08 18:03:04,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:04,087 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1408 transitions. [2021-10-08 18:03:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:03:04,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:04,089 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:04,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-08 18:03:04,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:04,303 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:04,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:04,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1669950686, now seen corresponding path program 28 times [2021-10-08 18:03:04,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:04,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95616324] [2021-10-08 18:03:04,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:03:04,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:04,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:04,307 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:04,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 18:03:04,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:03:04,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:04,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:03:04,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:05,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:06,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:06,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95616324] [2021-10-08 18:03:06,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95616324] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:06,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:06,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:03:06,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974670564] [2021-10-08 18:03:06,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 18:03:06,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:06,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 18:03:06,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:03:06,537 INFO L87 Difference]: Start difference. First operand 452 states and 1408 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:10,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:10,962 INFO L93 Difference]: Finished difference Result 516 states and 1601 transitions. [2021-10-08 18:03:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 18:03:10,964 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:03:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:10,968 INFO L225 Difference]: With dead ends: 516 [2021-10-08 18:03:10,968 INFO L226 Difference]: Without dead ends: 510 [2021-10-08 18:03:10,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4183.4ms TimeCoverageRelationStatistics Valid=263, Invalid=607, Unknown=0, NotChecked=0, Total=870 [2021-10-08 18:03:10,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-08 18:03:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 450. [2021-10-08 18:03:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 3.1024498886414253) internal successors, (1393), 449 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:10,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1393 transitions. [2021-10-08 18:03:10,983 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1393 transitions. Word has length 18 [2021-10-08 18:03:10,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:10,984 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1393 transitions. [2021-10-08 18:03:10,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:10,984 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1393 transitions. [2021-10-08 18:03:10,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:03:10,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:10,986 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:11,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:11,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:11,201 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:11,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:11,202 INFO L82 PathProgramCache]: Analyzing trace with hash 440628730, now seen corresponding path program 29 times [2021-10-08 18:03:11,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:11,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760181245] [2021-10-08 18:03:11,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:03:11,203 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:11,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:11,204 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:11,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 18:03:11,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:03:11,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:11,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:03:11,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:12,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:14,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:14,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760181245] [2021-10-08 18:03:14,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760181245] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:14,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:14,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:03:14,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159537854] [2021-10-08 18:03:14,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:03:14,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:03:14,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:03:14,089 INFO L87 Difference]: Start difference. First operand 450 states and 1393 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:24,086 INFO L93 Difference]: Finished difference Result 708 states and 1995 transitions. [2021-10-08 18:03:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 18:03:24,088 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:03:24,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:24,092 INFO L225 Difference]: With dead ends: 708 [2021-10-08 18:03:24,093 INFO L226 Difference]: Without dead ends: 700 [2021-10-08 18:03:24,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 9021.1ms TimeCoverageRelationStatistics Valid=375, Invalid=1265, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 18:03:24,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-08 18:03:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 480. [2021-10-08 18:03:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 3.127348643006263) internal successors, (1498), 479 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1498 transitions. [2021-10-08 18:03:24,111 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1498 transitions. Word has length 18 [2021-10-08 18:03:24,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:24,112 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 1498 transitions. [2021-10-08 18:03:24,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:24,112 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1498 transitions. [2021-10-08 18:03:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:03:24,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:24,114 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:24,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-08 18:03:24,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:24,328 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:24,329 INFO L82 PathProgramCache]: Analyzing trace with hash 568710004, now seen corresponding path program 30 times [2021-10-08 18:03:24,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:24,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631523473] [2021-10-08 18:03:24,330 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:03:24,330 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:24,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:24,332 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:24,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 18:03:24,955 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 18:03:24,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:24,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:03:24,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:25,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:26,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:26,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631523473] [2021-10-08 18:03:26,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631523473] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:26,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:26,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 18:03:26,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727920145] [2021-10-08 18:03:26,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:03:26,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:03:26,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:03:26,857 INFO L87 Difference]: Start difference. First operand 480 states and 1498 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:33,366 INFO L93 Difference]: Finished difference Result 656 states and 1908 transitions. [2021-10-08 18:03:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 18:03:33,367 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:03:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:33,371 INFO L225 Difference]: With dead ends: 656 [2021-10-08 18:03:33,371 INFO L226 Difference]: Without dead ends: 652 [2021-10-08 18:03:33,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 6096.5ms TimeCoverageRelationStatistics Valid=376, Invalid=1030, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 18:03:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-10-08 18:03:33,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 502. [2021-10-08 18:03:33,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 3.1596806387225547) internal successors, (1583), 501 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:33,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1583 transitions. [2021-10-08 18:03:33,385 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1583 transitions. Word has length 18 [2021-10-08 18:03:33,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:33,385 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1583 transitions. [2021-10-08 18:03:33,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:33,385 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1583 transitions. [2021-10-08 18:03:33,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:03:33,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:33,387 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:33,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:33,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:33,602 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:33,602 INFO L82 PathProgramCache]: Analyzing trace with hash 544383846, now seen corresponding path program 31 times [2021-10-08 18:03:33,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:33,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64183718] [2021-10-08 18:03:33,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:03:33,603 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:33,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:33,605 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:33,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 18:03:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:34,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:03:34,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:34,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:36,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:36,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64183718] [2021-10-08 18:03:36,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64183718] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:36,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:36,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:03:36,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901768981] [2021-10-08 18:03:36,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:03:36,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:36,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:03:36,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:03:36,398 INFO L87 Difference]: Start difference. First operand 502 states and 1583 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:44,463 INFO L93 Difference]: Finished difference Result 662 states and 1919 transitions. [2021-10-08 18:03:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 18:03:44,464 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:03:44,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:44,469 INFO L225 Difference]: With dead ends: 662 [2021-10-08 18:03:44,469 INFO L226 Difference]: Without dead ends: 662 [2021-10-08 18:03:44,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 8001.3ms TimeCoverageRelationStatistics Valid=346, Invalid=1294, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 18:03:44,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-10-08 18:03:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 512. [2021-10-08 18:03:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 3.1663405088062624) internal successors, (1618), 511 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1618 transitions. [2021-10-08 18:03:44,484 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1618 transitions. Word has length 18 [2021-10-08 18:03:44,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:44,484 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1618 transitions. [2021-10-08 18:03:44,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:44,484 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1618 transitions. [2021-10-08 18:03:44,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:03:44,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:44,486 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:44,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:44,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:44,700 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:44,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:44,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297836, now seen corresponding path program 32 times [2021-10-08 18:03:44,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:44,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613266382] [2021-10-08 18:03:44,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:03:44,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:44,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:44,704 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:44,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 18:03:45,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:03:45,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:45,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:03:45,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:45,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:47,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:47,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613266382] [2021-10-08 18:03:47,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613266382] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:47,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:47,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:03:47,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258863079] [2021-10-08 18:03:47,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:03:47,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:47,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:03:47,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:03:47,202 INFO L87 Difference]: Start difference. First operand 512 states and 1618 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:54,454 INFO L93 Difference]: Finished difference Result 782 states and 2226 transitions. [2021-10-08 18:03:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:03:54,456 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:03:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:54,462 INFO L225 Difference]: With dead ends: 782 [2021-10-08 18:03:54,462 INFO L226 Difference]: Without dead ends: 774 [2021-10-08 18:03:54,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 6640.6ms TimeCoverageRelationStatistics Valid=263, Invalid=997, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 18:03:54,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-10-08 18:03:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 530. [2021-10-08 18:03:54,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.1776937618147447) internal successors, (1681), 529 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1681 transitions. [2021-10-08 18:03:54,478 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1681 transitions. Word has length 18 [2021-10-08 18:03:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:54,478 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 1681 transitions. [2021-10-08 18:03:54,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1681 transitions. [2021-10-08 18:03:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:03:54,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:54,480 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:54,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:54,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:54,694 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:54,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:54,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1821204070, now seen corresponding path program 33 times [2021-10-08 18:03:54,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:54,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916065938] [2021-10-08 18:03:54,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:03:54,696 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:54,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:54,697 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:54,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 18:03:55,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 18:03:55,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:55,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:03:55,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:55,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:57,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:57,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916065938] [2021-10-08 18:03:57,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916065938] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:57,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:57,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:03:57,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368901761] [2021-10-08 18:03:57,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:03:57,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:03:57,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:03:57,211 INFO L87 Difference]: Start difference. First operand 530 states and 1681 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:05,376 INFO L93 Difference]: Finished difference Result 770 states and 2232 transitions. [2021-10-08 18:04:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:04:05,377 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:04:05,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:05,381 INFO L225 Difference]: With dead ends: 770 [2021-10-08 18:04:05,381 INFO L226 Difference]: Without dead ends: 762 [2021-10-08 18:04:05,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 7687.9ms TimeCoverageRelationStatistics Valid=459, Invalid=1263, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 18:04:05,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-10-08 18:04:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 546. [2021-10-08 18:04:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 3.1981651376146787) internal successors, (1743), 545 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1743 transitions. [2021-10-08 18:04:05,400 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1743 transitions. Word has length 18 [2021-10-08 18:04:05,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:05,401 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 1743 transitions. [2021-10-08 18:04:05,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:05,401 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1743 transitions. [2021-10-08 18:04:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:04:05,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:05,403 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:05,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:05,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:05,618 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:05,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash 66819342, now seen corresponding path program 34 times [2021-10-08 18:04:05,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:05,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372897075] [2021-10-08 18:04:05,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:04:05,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:05,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:05,621 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:05,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 18:04:06,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:04:06,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:06,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:04:06,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:06,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:07,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:07,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372897075] [2021-10-08 18:04:07,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372897075] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:07,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:07,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:04:07,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24078278] [2021-10-08 18:04:07,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 18:04:07,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 18:04:07,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:04:07,826 INFO L87 Difference]: Start difference. First operand 546 states and 1743 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:11,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:11,449 INFO L93 Difference]: Finished difference Result 604 states and 1911 transitions. [2021-10-08 18:04:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 18:04:11,450 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:04:11,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:11,455 INFO L225 Difference]: With dead ends: 604 [2021-10-08 18:04:11,455 INFO L226 Difference]: Without dead ends: 598 [2021-10-08 18:04:11,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3693.2ms TimeCoverageRelationStatistics Valid=232, Invalid=524, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:04:11,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-10-08 18:04:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 498. [2021-10-08 18:04:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.1569416498993963) internal successors, (1569), 497 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1569 transitions. [2021-10-08 18:04:11,466 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1569 transitions. Word has length 18 [2021-10-08 18:04:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:11,466 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1569 transitions. [2021-10-08 18:04:11,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1569 transitions. [2021-10-08 18:04:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:04:11,468 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:11,469 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:11,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-10-08 18:04:11,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:11,684 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:11,684 INFO L82 PathProgramCache]: Analyzing trace with hash -2117568538, now seen corresponding path program 35 times [2021-10-08 18:04:11,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:11,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647321714] [2021-10-08 18:04:11,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:04:11,686 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:11,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:11,687 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:11,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 18:04:12,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:04:12,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:12,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:04:12,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:12,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:14,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:14,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647321714] [2021-10-08 18:04:14,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647321714] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:14,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:14,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:04:14,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404968543] [2021-10-08 18:04:14,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:04:14,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:14,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:04:14,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:04:14,404 INFO L87 Difference]: Start difference. First operand 498 states and 1569 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:24,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:24,151 INFO L93 Difference]: Finished difference Result 770 states and 2197 transitions. [2021-10-08 18:04:24,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:04:24,152 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:04:24,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:24,157 INFO L225 Difference]: With dead ends: 770 [2021-10-08 18:04:24,157 INFO L226 Difference]: Without dead ends: 762 [2021-10-08 18:04:24,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 8986.8ms TimeCoverageRelationStatistics Valid=341, Invalid=1219, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:04:24,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-10-08 18:04:24,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 510. [2021-10-08 18:04:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 3.168958742632613) internal successors, (1613), 509 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1613 transitions. [2021-10-08 18:04:24,170 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1613 transitions. Word has length 18 [2021-10-08 18:04:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:24,170 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1613 transitions. [2021-10-08 18:04:24,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1613 transitions. [2021-10-08 18:04:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:04:24,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:24,172 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:24,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-10-08 18:04:24,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:24,389 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:24,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1989487264, now seen corresponding path program 36 times [2021-10-08 18:04:24,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:24,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934704118] [2021-10-08 18:04:24,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:04:24,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:24,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:24,392 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:24,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 18:04:25,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 18:04:25,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:25,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:04:25,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:25,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:26,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:26,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934704118] [2021-10-08 18:04:26,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934704118] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:26,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:26,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 18:04:26,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332353933] [2021-10-08 18:04:26,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:04:26,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:04:26,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:04:26,836 INFO L87 Difference]: Start difference. First operand 510 states and 1613 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:33,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:33,776 INFO L93 Difference]: Finished difference Result 704 states and 2063 transitions. [2021-10-08 18:04:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 18:04:33,777 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:04:33,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:33,781 INFO L225 Difference]: With dead ends: 704 [2021-10-08 18:04:33,781 INFO L226 Difference]: Without dead ends: 700 [2021-10-08 18:04:33,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 6779.7ms TimeCoverageRelationStatistics Valid=379, Invalid=1103, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 18:04:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-08 18:04:33,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 468. [2021-10-08 18:04:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 3.1734475374732334) internal successors, (1482), 467 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1482 transitions. [2021-10-08 18:04:33,792 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1482 transitions. Word has length 18 [2021-10-08 18:04:33,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:33,792 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1482 transitions. [2021-10-08 18:04:33,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1482 transitions. [2021-10-08 18:04:33,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:04:33,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:33,794 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:33,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:33,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:33,998 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:33,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:33,998 INFO L82 PathProgramCache]: Analyzing trace with hash 94100702, now seen corresponding path program 37 times [2021-10-08 18:04:33,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:33,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918030495] [2021-10-08 18:04:33,999 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:04:34,000 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:34,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:34,001 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:34,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 18:04:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:04:34,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:04:34,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:34,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:35,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:35,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918030495] [2021-10-08 18:04:35,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918030495] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:35,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:35,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 10 [2021-10-08 18:04:35,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906233247] [2021-10-08 18:04:35,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:04:35,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:35,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:04:35,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:04:35,386 INFO L87 Difference]: Start difference. First operand 468 states and 1482 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:35,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:35,492 INFO L93 Difference]: Finished difference Result 629 states and 1883 transitions. [2021-10-08 18:04:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:04:35,493 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:04:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:35,499 INFO L225 Difference]: With dead ends: 629 [2021-10-08 18:04:35,500 INFO L226 Difference]: Without dead ends: 578 [2021-10-08 18:04:35,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 237.1ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:04:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-10-08 18:04:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 504. [2021-10-08 18:04:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 3.198807157057654) internal successors, (1609), 503 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:35,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1609 transitions. [2021-10-08 18:04:35,515 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1609 transitions. Word has length 19 [2021-10-08 18:04:35,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:35,515 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1609 transitions. [2021-10-08 18:04:35,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1609 transitions. [2021-10-08 18:04:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:04:35,517 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:35,517 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:35,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:35,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:35,721 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:35,721 INFO L82 PathProgramCache]: Analyzing trace with hash 84114922, now seen corresponding path program 38 times [2021-10-08 18:04:35,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:35,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948025373] [2021-10-08 18:04:35,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:04:35,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:35,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:35,725 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:35,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 18:04:36,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:04:36,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:36,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:04:36,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:36,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:37,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:37,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948025373] [2021-10-08 18:04:37,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948025373] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:37,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:37,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:04:37,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991998232] [2021-10-08 18:04:37,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:04:37,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:37,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:04:37,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:04:37,589 INFO L87 Difference]: Start difference. First operand 504 states and 1609 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:42,930 INFO L93 Difference]: Finished difference Result 1150 states and 3253 transitions. [2021-10-08 18:04:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 18:04:42,931 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:04:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:42,937 INFO L225 Difference]: With dead ends: 1150 [2021-10-08 18:04:42,937 INFO L226 Difference]: Without dead ends: 1150 [2021-10-08 18:04:42,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 5032.6ms TimeCoverageRelationStatistics Valid=680, Invalid=2076, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 18:04:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2021-10-08 18:04:42,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 532. [2021-10-08 18:04:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 3.1412429378531073) internal successors, (1668), 531 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:42,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1668 transitions. [2021-10-08 18:04:42,962 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1668 transitions. Word has length 19 [2021-10-08 18:04:42,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:42,962 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1668 transitions. [2021-10-08 18:04:42,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:42,963 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1668 transitions. [2021-10-08 18:04:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:04:42,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:42,965 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:42,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:43,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:43,179 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:43,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:43,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2017272151, now seen corresponding path program 39 times [2021-10-08 18:04:43,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:43,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844458672] [2021-10-08 18:04:43,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:04:43,181 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:43,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:43,182 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:43,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 18:04:44,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:04:44,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:44,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:04:44,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:44,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:45,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:45,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844458672] [2021-10-08 18:04:45,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844458672] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:45,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:45,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:04:45,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344322251] [2021-10-08 18:04:45,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:04:45,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:45,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:04:45,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:04:45,509 INFO L87 Difference]: Start difference. First operand 532 states and 1668 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:59,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:59,157 INFO L93 Difference]: Finished difference Result 1010 states and 2736 transitions. [2021-10-08 18:04:59,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 18:04:59,159 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:04:59,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:59,162 INFO L225 Difference]: With dead ends: 1010 [2021-10-08 18:04:59,162 INFO L226 Difference]: Without dead ends: 974 [2021-10-08 18:04:59,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 13075.0ms TimeCoverageRelationStatistics Valid=829, Invalid=3077, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 18:04:59,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-10-08 18:04:59,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 544. [2021-10-08 18:04:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 3.134438305709024) internal successors, (1702), 543 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:59,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1702 transitions. [2021-10-08 18:04:59,178 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1702 transitions. Word has length 19 [2021-10-08 18:04:59,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:59,179 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 1702 transitions. [2021-10-08 18:04:59,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1702 transitions. [2021-10-08 18:04:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:04:59,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:59,181 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:59,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:59,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:59,385 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash -924608647, now seen corresponding path program 40 times [2021-10-08 18:04:59,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:59,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478342363] [2021-10-08 18:04:59,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:04:59,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:59,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:59,388 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:59,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 18:05:00,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:05:00,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:00,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:05:00,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:00,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:02,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:02,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478342363] [2021-10-08 18:05:02,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478342363] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:02,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:02,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:05:02,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951005845] [2021-10-08 18:05:02,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:05:02,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:02,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:05:02,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:05:02,579 INFO L87 Difference]: Start difference. First operand 544 states and 1702 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:15,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:15,765 INFO L93 Difference]: Finished difference Result 918 states and 2516 transitions. [2021-10-08 18:05:15,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 18:05:15,766 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:05:15,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:15,768 INFO L225 Difference]: With dead ends: 918 [2021-10-08 18:05:15,769 INFO L226 Difference]: Without dead ends: 898 [2021-10-08 18:05:15,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 12062.3ms TimeCoverageRelationStatistics Valid=581, Invalid=2071, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 18:05:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-10-08 18:05:15,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 588. [2021-10-08 18:05:15,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.1669505962521294) internal successors, (1859), 587 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:15,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1859 transitions. [2021-10-08 18:05:15,784 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1859 transitions. Word has length 19 [2021-10-08 18:05:15,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:15,785 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1859 transitions. [2021-10-08 18:05:15,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:15,785 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1859 transitions. [2021-10-08 18:05:15,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:05:15,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:15,786 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:05:15,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:15,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:15,987 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:05:15,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:15,988 INFO L82 PathProgramCache]: Analyzing trace with hash -834773743, now seen corresponding path program 41 times [2021-10-08 18:05:15,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:15,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993598037] [2021-10-08 18:05:15,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:05:15,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:15,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:15,990 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:15,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 18:05:16,811 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:05:16,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:16,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:05:16,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:17,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:18,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:18,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993598037] [2021-10-08 18:05:18,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993598037] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:18,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:18,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 18:05:18,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865225752] [2021-10-08 18:05:18,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:05:18,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:18,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:05:18,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:05:18,708 INFO L87 Difference]: Start difference. First operand 588 states and 1859 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:31,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:31,969 INFO L93 Difference]: Finished difference Result 970 states and 2706 transitions. [2021-10-08 18:05:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 18:05:31,970 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:05:31,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:31,973 INFO L225 Difference]: With dead ends: 970 [2021-10-08 18:05:31,973 INFO L226 Difference]: Without dead ends: 970 [2021-10-08 18:05:31,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 12788.5ms TimeCoverageRelationStatistics Valid=689, Invalid=2733, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 18:05:31,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-10-08 18:05:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 600. [2021-10-08 18:05:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 3.1636060100166943) internal successors, (1895), 599 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:31,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1895 transitions. [2021-10-08 18:05:31,989 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1895 transitions. Word has length 19 [2021-10-08 18:05:31,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:31,989 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 1895 transitions. [2021-10-08 18:05:31,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1895 transitions. [2021-10-08 18:05:31,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:05:31,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:31,991 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:05:32,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:32,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:32,192 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:05:32,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:32,193 INFO L82 PathProgramCache]: Analyzing trace with hash -777657193, now seen corresponding path program 42 times [2021-10-08 18:05:32,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:32,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106392638] [2021-10-08 18:05:32,194 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:05:32,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:32,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:32,195 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:32,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 18:05:33,084 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:05:33,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:33,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:05:33,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:05:33,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:05:34,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:34,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106392638] [2021-10-08 18:05:34,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106392638] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:34,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:34,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:05:34,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400022955] [2021-10-08 18:05:34,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 18:05:34,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:34,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 18:05:34,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:05:34,482 INFO L87 Difference]: Start difference. First operand 600 states and 1895 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:40,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:40,794 INFO L93 Difference]: Finished difference Result 922 states and 2633 transitions. [2021-10-08 18:05:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:05:40,795 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:05:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:40,797 INFO L225 Difference]: With dead ends: 922 [2021-10-08 18:05:40,797 INFO L226 Difference]: Without dead ends: 914 [2021-10-08 18:05:40,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 5930.6ms TimeCoverageRelationStatistics Valid=582, Invalid=1674, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 18:05:40,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-10-08 18:05:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 602. [2021-10-08 18:05:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 3.1713810316139766) internal successors, (1906), 601 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1906 transitions. [2021-10-08 18:05:40,813 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1906 transitions. Word has length 19 [2021-10-08 18:05:40,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:40,814 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1906 transitions. [2021-10-08 18:05:40,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1906 transitions. [2021-10-08 18:05:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:05:40,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:40,815 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:05:40,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-08 18:05:41,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:41,016 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:05:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:41,017 INFO L82 PathProgramCache]: Analyzing trace with hash -2057136662, now seen corresponding path program 43 times [2021-10-08 18:05:41,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:41,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946176224] [2021-10-08 18:05:41,018 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:05:41,018 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:41,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:41,020 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:41,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 18:05:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:05:41,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:05:41,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:42,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:43,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:43,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946176224] [2021-10-08 18:05:43,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946176224] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:43,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:43,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:05:43,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041003124] [2021-10-08 18:05:43,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:05:43,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:43,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:05:43,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:05:43,546 INFO L87 Difference]: Start difference. First operand 602 states and 1906 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:50,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:50,687 INFO L93 Difference]: Finished difference Result 928 states and 2668 transitions. [2021-10-08 18:05:50,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 18:05:50,688 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:05:50,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:50,690 INFO L225 Difference]: With dead ends: 928 [2021-10-08 18:05:50,690 INFO L226 Difference]: Without dead ends: 928 [2021-10-08 18:05:50,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 6665.9ms TimeCoverageRelationStatistics Valid=535, Invalid=1535, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 18:05:50,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-10-08 18:05:50,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 652. [2021-10-08 18:05:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 3.175115207373272) internal successors, (2067), 651 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:50,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2067 transitions. [2021-10-08 18:05:50,705 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2067 transitions. Word has length 19 [2021-10-08 18:05:50,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:50,706 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 2067 transitions. [2021-10-08 18:05:50,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:50,706 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2067 transitions. [2021-10-08 18:05:50,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:05:50,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:50,708 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:05:50,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:50,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:50,909 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:05:50,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:50,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1931623393, now seen corresponding path program 44 times [2021-10-08 18:05:50,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:50,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379751199] [2021-10-08 18:05:50,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:05:50,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:50,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:50,912 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:50,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 18:05:51,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:05:51,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:51,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:05:51,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:52,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:54,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:54,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379751199] [2021-10-08 18:05:54,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379751199] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:54,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:54,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:05:54,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969051154] [2021-10-08 18:05:54,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:05:54,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:54,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:05:54,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:05:54,392 INFO L87 Difference]: Start difference. First operand 652 states and 2067 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:07,029 INFO L93 Difference]: Finished difference Result 1022 states and 2884 transitions. [2021-10-08 18:06:07,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:06:07,030 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:06:07,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:07,033 INFO L225 Difference]: With dead ends: 1022 [2021-10-08 18:06:07,034 INFO L226 Difference]: Without dead ends: 1002 [2021-10-08 18:06:07,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 11700.3ms TimeCoverageRelationStatistics Valid=512, Invalid=1840, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 18:06:07,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-10-08 18:06:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 694. [2021-10-08 18:06:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 3.1976911976911975) internal successors, (2216), 693 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2216 transitions. [2021-10-08 18:06:07,051 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2216 transitions. Word has length 19 [2021-10-08 18:06:07,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:07,051 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2216 transitions. [2021-10-08 18:06:07,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:07,051 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2216 transitions. [2021-10-08 18:06:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:06:07,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:07,053 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:06:07,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:07,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:07,254 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:06:07,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:07,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1841788489, now seen corresponding path program 45 times [2021-10-08 18:06:07,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:07,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260858929] [2021-10-08 18:06:07,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:06:07,256 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:07,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:07,257 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:07,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-08 18:06:08,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:06:08,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:08,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:06:08,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:08,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:10,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:10,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260858929] [2021-10-08 18:06:10,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260858929] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:10,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:10,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-08 18:06:10,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740780118] [2021-10-08 18:06:10,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:06:10,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:10,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:06:10,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:06:10,747 INFO L87 Difference]: Start difference. First operand 694 states and 2216 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:20,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:20,453 INFO L93 Difference]: Finished difference Result 1104 states and 3207 transitions. [2021-10-08 18:06:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:06:20,454 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:06:20,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:20,458 INFO L225 Difference]: With dead ends: 1104 [2021-10-08 18:06:20,458 INFO L226 Difference]: Without dead ends: 1100 [2021-10-08 18:06:20,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 9161.5ms TimeCoverageRelationStatistics Valid=372, Invalid=1268, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 18:06:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-10-08 18:06:20,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 802. [2021-10-08 18:06:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 3.285892634207241) internal successors, (2632), 801 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2632 transitions. [2021-10-08 18:06:20,477 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2632 transitions. Word has length 19 [2021-10-08 18:06:20,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:20,477 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 2632 transitions. [2021-10-08 18:06:20,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:20,478 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2632 transitions. [2021-10-08 18:06:20,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:06:20,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:20,480 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:06:20,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:20,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:20,680 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:06:20,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:20,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1890704223, now seen corresponding path program 46 times [2021-10-08 18:06:20,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:20,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475249126] [2021-10-08 18:06:20,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:06:20,682 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:20,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:20,684 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:20,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-08 18:06:21,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:06:21,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:21,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:06:21,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:21,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:24,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:24,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475249126] [2021-10-08 18:06:24,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475249126] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:24,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:24,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:06:24,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828042351] [2021-10-08 18:06:24,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:06:24,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:24,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:06:24,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:06:24,163 INFO L87 Difference]: Start difference. First operand 802 states and 2632 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:37,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:37,657 INFO L93 Difference]: Finished difference Result 1138 states and 3411 transitions. [2021-10-08 18:06:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 18:06:37,658 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:06:37,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:37,661 INFO L225 Difference]: With dead ends: 1138 [2021-10-08 18:06:37,662 INFO L226 Difference]: Without dead ends: 1130 [2021-10-08 18:06:37,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 12084.1ms TimeCoverageRelationStatistics Valid=508, Invalid=1844, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 18:06:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-10-08 18:06:37,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 864. [2021-10-08 18:06:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.317497103128621) internal successors, (2863), 863 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2863 transitions. [2021-10-08 18:06:37,685 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2863 transitions. Word has length 19 [2021-10-08 18:06:37,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:37,686 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2863 transitions. [2021-10-08 18:06:37,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2863 transitions. [2021-10-08 18:06:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:06:37,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:37,689 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:06:37,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:37,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:37,903 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:06:37,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:37,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1784671939, now seen corresponding path program 47 times [2021-10-08 18:06:37,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:37,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068923426] [2021-10-08 18:06:37,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:06:37,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:37,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:37,907 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:37,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-08 18:06:39,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:06:39,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:39,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:06:39,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:39,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:41,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:41,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068923426] [2021-10-08 18:06:41,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068923426] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:41,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:41,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:06:41,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950383230] [2021-10-08 18:06:41,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:06:41,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:41,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:06:41,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:06:41,268 INFO L87 Difference]: Start difference. First operand 864 states and 2863 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:49,091 INFO L93 Difference]: Finished difference Result 1142 states and 3536 transitions. [2021-10-08 18:06:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:06:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:06:49,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:49,097 INFO L225 Difference]: With dead ends: 1142 [2021-10-08 18:06:49,097 INFO L226 Difference]: Without dead ends: 1142 [2021-10-08 18:06:49,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 6659.9ms TimeCoverageRelationStatistics Valid=426, Invalid=1134, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:06:49,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-10-08 18:06:49,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 906. [2021-10-08 18:06:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 3.3613259668508286) internal successors, (3042), 905 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 3042 transitions. [2021-10-08 18:06:49,127 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 3042 transitions. Word has length 19 [2021-10-08 18:06:49,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:49,127 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 3042 transitions. [2021-10-08 18:06:49,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 3042 transitions. [2021-10-08 18:06:49,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:06:49,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:49,131 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:06:49,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:49,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:49,345 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:06:49,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:49,346 INFO L82 PathProgramCache]: Analyzing trace with hash 243126654, now seen corresponding path program 48 times [2021-10-08 18:06:49,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:49,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153959924] [2021-10-08 18:06:49,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:06:49,347 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:49,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:49,348 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:49,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-08 18:06:50,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 18:06:50,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:50,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:06:50,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:06:50,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:06:50,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:50,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153959924] [2021-10-08 18:06:50,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153959924] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:50,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:50,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 18:06:50,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517770873] [2021-10-08 18:06:50,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:06:50,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:50,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:06:50,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:06:50,995 INFO L87 Difference]: Start difference. First operand 906 states and 3042 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:52,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:52,176 INFO L93 Difference]: Finished difference Result 1434 states and 4398 transitions. [2021-10-08 18:06:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 18:06:52,177 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:06:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:52,183 INFO L225 Difference]: With dead ends: 1434 [2021-10-08 18:06:52,183 INFO L226 Difference]: Without dead ends: 1422 [2021-10-08 18:06:52,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 987.1ms TimeCoverageRelationStatistics Valid=238, Invalid=464, Unknown=0, NotChecked=0, Total=702 [2021-10-08 18:06:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2021-10-08 18:06:52,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 972. [2021-10-08 18:06:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 3.3316168898043252) internal successors, (3235), 971 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:52,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 3235 transitions. [2021-10-08 18:06:52,216 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 3235 transitions. Word has length 19 [2021-10-08 18:06:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:52,216 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 3235 transitions. [2021-10-08 18:06:52,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 3235 transitions. [2021-10-08 18:06:52,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:06:52,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:52,220 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:06:52,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:52,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:52,434 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:06:52,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:52,434 INFO L82 PathProgramCache]: Analyzing trace with hash 515591377, now seen corresponding path program 49 times [2021-10-08 18:06:52,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:52,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718647242] [2021-10-08 18:06:52,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:06:52,436 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:52,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:52,437 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:52,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-08 18:06:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:06:53,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:06:53,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:53,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:55,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:55,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718647242] [2021-10-08 18:06:55,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718647242] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:55,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:55,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:06:55,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899075843] [2021-10-08 18:06:55,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:06:55,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:55,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:06:55,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:06:55,308 INFO L87 Difference]: Start difference. First operand 972 states and 3235 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:03,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:03,908 INFO L93 Difference]: Finished difference Result 1284 states and 3979 transitions. [2021-10-08 18:07:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 18:07:03,909 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:07:03,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:03,915 INFO L225 Difference]: With dead ends: 1284 [2021-10-08 18:07:03,916 INFO L226 Difference]: Without dead ends: 1284 [2021-10-08 18:07:03,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 7612.1ms TimeCoverageRelationStatistics Valid=412, Invalid=1148, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:07:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-10-08 18:07:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 960. [2021-10-08 18:07:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.327424400417101) internal successors, (3191), 959 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:03,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3191 transitions. [2021-10-08 18:07:03,954 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3191 transitions. Word has length 19 [2021-10-08 18:07:03,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:03,955 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 3191 transitions. [2021-10-08 18:07:03,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3191 transitions. [2021-10-08 18:07:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:07:03,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:03,958 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:03,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:04,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:04,173 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:07:04,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:04,174 INFO L82 PathProgramCache]: Analyzing trace with hash 383903463, now seen corresponding path program 50 times [2021-10-08 18:07:04,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:04,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235288972] [2021-10-08 18:07:04,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:07:04,175 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:04,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:04,176 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:04,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-08 18:07:05,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:07:05,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:05,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 18:07:05,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:05,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:06,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:06,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235288972] [2021-10-08 18:07:06,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235288972] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:06,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:06,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-08 18:07:06,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068070936] [2021-10-08 18:07:06,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 18:07:06,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:06,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 18:07:06,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:07:06,943 INFO L87 Difference]: Start difference. First operand 960 states and 3191 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:22,127 INFO L93 Difference]: Finished difference Result 1604 states and 4900 transitions. [2021-10-08 18:07:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-08 18:07:22,129 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:07:22,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:22,133 INFO L225 Difference]: With dead ends: 1604 [2021-10-08 18:07:22,133 INFO L226 Difference]: Without dead ends: 1600 [2021-10-08 18:07:22,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 14618.9ms TimeCoverageRelationStatistics Valid=1250, Invalid=4006, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 18:07:22,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-10-08 18:07:22,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1004. [2021-10-08 18:07:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 3.2811565304087735) internal successors, (3291), 1003 states have internal predecessors, (3291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:22,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3291 transitions. [2021-10-08 18:07:22,157 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3291 transitions. Word has length 20 [2021-10-08 18:07:22,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:22,157 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 3291 transitions. [2021-10-08 18:07:22,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:22,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3291 transitions. [2021-10-08 18:07:22,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:07:22,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:22,160 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:22,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:22,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:22,361 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:07:22,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:22,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1968606347, now seen corresponding path program 51 times [2021-10-08 18:07:22,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:22,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724852191] [2021-10-08 18:07:22,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:07:22,362 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:22,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:22,364 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:22,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-08 18:07:23,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:07:23,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:23,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:07:23,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:23,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:24,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:24,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724852191] [2021-10-08 18:07:24,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724852191] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:24,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:24,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:07:24,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636923124] [2021-10-08 18:07:24,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:07:24,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:07:24,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:07:24,920 INFO L87 Difference]: Start difference. First operand 1004 states and 3291 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:39,498 INFO L93 Difference]: Finished difference Result 1670 states and 4789 transitions. [2021-10-08 18:07:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-08 18:07:39,500 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:07:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:39,504 INFO L225 Difference]: With dead ends: 1670 [2021-10-08 18:07:39,504 INFO L226 Difference]: Without dead ends: 1666 [2021-10-08 18:07:39,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2097 ImplicationChecksByTransitivity, 13695.1ms TimeCoverageRelationStatistics Valid=1389, Invalid=5417, Unknown=0, NotChecked=0, Total=6806 [2021-10-08 18:07:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2021-10-08 18:07:39,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1054. [2021-10-08 18:07:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1053 states have (on average 3.2564102564102564) internal successors, (3429), 1053 states have internal predecessors, (3429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 3429 transitions. [2021-10-08 18:07:39,530 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 3429 transitions. Word has length 20 [2021-10-08 18:07:39,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:39,530 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 3429 transitions. [2021-10-08 18:07:39,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:39,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 3429 transitions. [2021-10-08 18:07:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:07:39,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:39,533 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:39,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:39,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:39,734 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:07:39,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:39,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1270419891, now seen corresponding path program 52 times [2021-10-08 18:07:39,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:39,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918439211] [2021-10-08 18:07:39,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:07:39,736 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:39,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:39,737 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:39,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-08 18:07:40,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:07:40,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:40,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:07:40,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:41,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:43,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:43,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918439211] [2021-10-08 18:07:43,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918439211] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:43,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:43,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-08 18:07:43,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294771854] [2021-10-08 18:07:43,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 18:07:43,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 18:07:43,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:07:43,857 INFO L87 Difference]: Start difference. First operand 1054 states and 3429 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:58,131 INFO L93 Difference]: Finished difference Result 1528 states and 4611 transitions. [2021-10-08 18:07:58,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 18:07:58,133 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:07:58,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:58,136 INFO L225 Difference]: With dead ends: 1528 [2021-10-08 18:07:58,136 INFO L226 Difference]: Without dead ends: 1520 [2021-10-08 18:07:58,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 14326.6ms TimeCoverageRelationStatistics Valid=853, Invalid=2339, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 18:07:58,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-10-08 18:07:58,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1074. [2021-10-08 18:07:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 3.255358807082945) internal successors, (3493), 1073 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 3493 transitions. [2021-10-08 18:07:58,162 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 3493 transitions. Word has length 20 [2021-10-08 18:07:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:58,162 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 3493 transitions. [2021-10-08 18:07:58,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 3493 transitions. [2021-10-08 18:07:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:07:58,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:58,167 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:58,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:58,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:58,381 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:07:58,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:58,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1270162677, now seen corresponding path program 53 times [2021-10-08 18:07:58,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:58,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471168298] [2021-10-08 18:07:58,383 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:07:58,383 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:58,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:58,385 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:58,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-08 18:07:59,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-08 18:07:59,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:59,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:07:59,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:08:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:00,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:08:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:01,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:08:01,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471168298] [2021-10-08 18:08:01,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471168298] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:08:01,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:08:01,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:08:01,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582991648] [2021-10-08 18:08:01,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:08:01,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:08:01,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:08:01,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:08:01,073 INFO L87 Difference]: Start difference. First operand 1074 states and 3493 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:08:12,668 INFO L93 Difference]: Finished difference Result 1490 states and 4609 transitions. [2021-10-08 18:08:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-08 18:08:12,674 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:08:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:08:12,679 INFO L225 Difference]: With dead ends: 1490 [2021-10-08 18:08:12,679 INFO L226 Difference]: Without dead ends: 1486 [2021-10-08 18:08:12,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 11212.3ms TimeCoverageRelationStatistics Valid=1269, Invalid=3701, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 18:08:12,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-10-08 18:08:12,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1076. [2021-10-08 18:08:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1075 states have (on average 3.253953488372093) internal successors, (3498), 1075 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:12,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 3498 transitions. [2021-10-08 18:08:12,712 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 3498 transitions. Word has length 20 [2021-10-08 18:08:12,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:08:12,713 INFO L470 AbstractCegarLoop]: Abstraction has 1076 states and 3498 transitions. [2021-10-08 18:08:12,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:12,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 3498 transitions. [2021-10-08 18:08:12,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:08:12,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:08:12,715 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:08:12,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-08 18:08:12,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:08:12,916 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:08:12,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:08:12,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1308354033, now seen corresponding path program 54 times [2021-10-08 18:08:12,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:08:12,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123398642] [2021-10-08 18:08:12,918 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:08:12,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:08:12,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:08:12,919 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:08:12,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-08 18:08:14,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:08:14,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:08:14,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:08:14,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:08:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:14,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:08:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:17,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:08:17,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123398642] [2021-10-08 18:08:17,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123398642] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:08:17,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:08:17,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:08:17,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402944593] [2021-10-08 18:08:17,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:08:17,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:08:17,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:08:17,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:08:17,692 INFO L87 Difference]: Start difference. First operand 1076 states and 3498 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:51,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:08:51,748 INFO L93 Difference]: Finished difference Result 1636 states and 4730 transitions. [2021-10-08 18:08:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-08 18:08:51,750 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:08:51,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:08:51,754 INFO L225 Difference]: With dead ends: 1636 [2021-10-08 18:08:51,755 INFO L226 Difference]: Without dead ends: 1636 [2021-10-08 18:08:51,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 31665.7ms TimeCoverageRelationStatistics Valid=933, Invalid=3759, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 18:08:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-08 18:08:51,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1082. [2021-10-08 18:08:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 1081 states have (on average 3.25531914893617) internal successors, (3519), 1081 states have internal predecessors, (3519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 3519 transitions. [2021-10-08 18:08:51,781 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 3519 transitions. Word has length 20 [2021-10-08 18:08:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:08:51,781 INFO L470 AbstractCegarLoop]: Abstraction has 1082 states and 3519 transitions. [2021-10-08 18:08:51,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:51,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 3519 transitions. [2021-10-08 18:08:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:08:51,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:08:51,784 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:08:51,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-08 18:08:51,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:08:51,985 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:08:51,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:08:51,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1229758711, now seen corresponding path program 55 times [2021-10-08 18:08:51,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:08:51,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263041908] [2021-10-08 18:08:51,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:08:51,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:08:51,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:08:51,988 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:08:51,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-08 18:08:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:08:53,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 18:08:53,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:08:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:53,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:08:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:56,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:08:56,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263041908] [2021-10-08 18:08:56,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263041908] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:08:56,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:08:56,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-08 18:08:56,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34031484] [2021-10-08 18:08:56,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 18:08:56,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:08:56,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 18:08:56,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:08:56,753 INFO L87 Difference]: Start difference. First operand 1082 states and 3519 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:17,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:09:17,590 INFO L93 Difference]: Finished difference Result 1536 states and 4509 transitions. [2021-10-08 18:09:17,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 18:09:17,592 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:09:17,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:09:17,595 INFO L225 Difference]: With dead ends: 1536 [2021-10-08 18:09:17,595 INFO L226 Difference]: Without dead ends: 1516 [2021-10-08 18:09:17,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 19402.2ms TimeCoverageRelationStatistics Valid=605, Invalid=2365, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 18:09:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-10-08 18:09:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1106. [2021-10-08 18:09:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 3.260633484162896) internal successors, (3603), 1105 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 3603 transitions. [2021-10-08 18:09:17,629 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 3603 transitions. Word has length 20 [2021-10-08 18:09:17,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:09:17,629 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 3603 transitions. [2021-10-08 18:09:17,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:17,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 3603 transitions. [2021-10-08 18:09:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:09:17,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:09:17,633 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:09:17,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-08 18:09:17,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:09:17,847 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:09:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:09:17,848 INFO L82 PathProgramCache]: Analyzing trace with hash -381632753, now seen corresponding path program 56 times [2021-10-08 18:09:17,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:09:17,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666278490] [2021-10-08 18:09:17,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:09:17,849 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:09:17,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:09:17,850 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:09:17,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-08 18:09:19,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:09:19,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:09:19,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:09:19,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:09:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:09:19,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:09:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:09:21,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:09:21,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666278490] [2021-10-08 18:09:21,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666278490] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:09:21,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:09:21,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:09:21,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459771546] [2021-10-08 18:09:21,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:09:21,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:09:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:09:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:09:21,887 INFO L87 Difference]: Start difference. First operand 1106 states and 3603 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:55,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:09:55,139 INFO L93 Difference]: Finished difference Result 2004 states and 5658 transitions. [2021-10-08 18:09:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-08 18:09:55,140 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:09:55,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:09:55,144 INFO L225 Difference]: With dead ends: 2004 [2021-10-08 18:09:55,144 INFO L226 Difference]: Without dead ends: 1972 [2021-10-08 18:09:55,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2445 ImplicationChecksByTransitivity, 32024.3ms TimeCoverageRelationStatistics Valid=1418, Invalid=6592, Unknown=0, NotChecked=0, Total=8010 [2021-10-08 18:09:55,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2021-10-08 18:09:55,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1144. [2021-10-08 18:09:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.266841644794401) internal successors, (3734), 1143 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 3734 transitions. [2021-10-08 18:09:55,171 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 3734 transitions. Word has length 20 [2021-10-08 18:09:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:09:55,171 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 3734 transitions. [2021-10-08 18:09:55,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:55,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 3734 transitions. [2021-10-08 18:09:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:09:55,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:09:55,174 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:09:55,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-08 18:09:55,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:09:55,375 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:09:55,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:09:55,375 INFO L82 PathProgramCache]: Analyzing trace with hash -610167577, now seen corresponding path program 57 times [2021-10-08 18:09:55,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:09:55,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116328834] [2021-10-08 18:09:55,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:09:55,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:09:55,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:09:55,378 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:09:55,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-08 18:09:56,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 18:09:56,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:09:56,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:09:56,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:09:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:09:57,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:09:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:09:59,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:09:59,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116328834] [2021-10-08 18:09:59,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116328834] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:09:59,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:09:59,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-08 18:09:59,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741006773] [2021-10-08 18:09:59,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 18:09:59,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:09:59,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 18:09:59,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:09:59,674 INFO L87 Difference]: Start difference. First operand 1144 states and 3734 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:22,207 INFO L93 Difference]: Finished difference Result 1660 states and 4866 transitions. [2021-10-08 18:10:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-08 18:10:22,209 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:10:22,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:22,213 INFO L225 Difference]: With dead ends: 1660 [2021-10-08 18:10:22,213 INFO L226 Difference]: Without dead ends: 1648 [2021-10-08 18:10:22,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 21012.4ms TimeCoverageRelationStatistics Valid=1048, Invalid=3242, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 18:10:22,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-10-08 18:10:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1162. [2021-10-08 18:10:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 3.2704565030146426) internal successors, (3797), 1161 states have internal predecessors, (3797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 3797 transitions. [2021-10-08 18:10:22,249 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 3797 transitions. Word has length 20 [2021-10-08 18:10:22,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:10:22,249 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 3797 transitions. [2021-10-08 18:10:22,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:22,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 3797 transitions. [2021-10-08 18:10:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:10:22,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:22,253 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:10:22,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-08 18:10:22,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:10:22,468 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:10:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:22,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1930414991, now seen corresponding path program 58 times [2021-10-08 18:10:22,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:22,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204762918] [2021-10-08 18:10:22,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:10:22,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:22,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:22,471 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:22,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-08 18:10:23,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:10:23,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:10:23,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:10:23,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:24,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:26,523 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:26,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204762918] [2021-10-08 18:10:26,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204762918] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:10:26,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:10:26,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:10:26,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876700444] [2021-10-08 18:10:26,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:10:26,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:26,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:10:26,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:10:26,526 INFO L87 Difference]: Start difference. First operand 1162 states and 3797 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:43,907 INFO L93 Difference]: Finished difference Result 1336 states and 4319 transitions. [2021-10-08 18:10:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 18:10:43,908 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:10:43,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:43,910 INFO L225 Difference]: With dead ends: 1336 [2021-10-08 18:10:43,911 INFO L226 Difference]: Without dead ends: 1330 [2021-10-08 18:10:43,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 16517.0ms TimeCoverageRelationStatistics Valid=815, Invalid=2265, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 18:10:43,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-08 18:10:43,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1156. [2021-10-08 18:10:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 3.272727272727273) internal successors, (3780), 1155 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 3780 transitions. [2021-10-08 18:10:43,930 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 3780 transitions. Word has length 20 [2021-10-08 18:10:43,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:10:43,930 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 3780 transitions. [2021-10-08 18:10:43,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:43,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 3780 transitions. [2021-10-08 18:10:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:10:43,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:43,933 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:10:43,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-08 18:10:44,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:10:44,134 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:10:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:44,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1413238893, now seen corresponding path program 59 times [2021-10-08 18:10:44,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:44,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184073877] [2021-10-08 18:10:44,136 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:10:44,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:44,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:44,138 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:44,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-08 18:10:45,370 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:10:45,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:10:45,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:10:45,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:45,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:47,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:47,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184073877] [2021-10-08 18:10:47,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184073877] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:10:47,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:10:47,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:10:47,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107045762] [2021-10-08 18:10:47,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:10:47,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:47,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:10:47,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:10:47,227 INFO L87 Difference]: Start difference. First operand 1156 states and 3780 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:08,830 INFO L93 Difference]: Finished difference Result 1774 states and 5188 transitions. [2021-10-08 18:11:08,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-08 18:11:08,831 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:11:08,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:08,835 INFO L225 Difference]: With dead ends: 1774 [2021-10-08 18:11:08,835 INFO L226 Difference]: Without dead ends: 1742 [2021-10-08 18:11:08,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 20592.7ms TimeCoverageRelationStatistics Valid=1050, Invalid=5592, Unknown=0, NotChecked=0, Total=6642 [2021-10-08 18:11:08,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-10-08 18:11:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1168. [2021-10-08 18:11:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 3.26649528706084) internal successors, (3812), 1167 states have internal predecessors, (3812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3812 transitions. [2021-10-08 18:11:08,871 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3812 transitions. Word has length 20 [2021-10-08 18:11:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:08,872 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 3812 transitions. [2021-10-08 18:11:08,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3812 transitions. [2021-10-08 18:11:08,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:11:08,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:08,876 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:08,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:09,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:09,092 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:11:09,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:09,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1770814413, now seen corresponding path program 60 times [2021-10-08 18:11:09,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:09,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911125521] [2021-10-08 18:11:09,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:11:09,094 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:09,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:09,095 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:09,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-08 18:11:10,341 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 18:11:10,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:11:10,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:11:10,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:10,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:13,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:13,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911125521] [2021-10-08 18:11:13,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911125521] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:13,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:13,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:11:13,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855315726] [2021-10-08 18:11:13,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:11:13,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:13,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:11:13,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:11:13,009 INFO L87 Difference]: Start difference. First operand 1168 states and 3812 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:41,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:41,853 INFO L93 Difference]: Finished difference Result 1808 states and 5301 transitions. [2021-10-08 18:11:41,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-08 18:11:41,862 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:11:41,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:41,867 INFO L225 Difference]: With dead ends: 1808 [2021-10-08 18:11:41,867 INFO L226 Difference]: Without dead ends: 1776 [2021-10-08 18:11:41,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 27883.7ms TimeCoverageRelationStatistics Valid=1022, Invalid=4090, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 18:11:41,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-10-08 18:11:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1184. [2021-10-08 18:11:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 3.2561284868977176) internal successors, (3852), 1183 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 3852 transitions. [2021-10-08 18:11:41,894 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 3852 transitions. Word has length 20 [2021-10-08 18:11:41,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:41,894 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 3852 transitions. [2021-10-08 18:11:41,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:41,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 3852 transitions. [2021-10-08 18:11:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:11:41,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:41,897 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:41,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:42,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:42,098 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:11:42,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:42,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1642733139, now seen corresponding path program 61 times [2021-10-08 18:11:42,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:42,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815261257] [2021-10-08 18:11:42,100 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:11:42,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:42,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:42,102 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:42,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-08 18:11:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:11:43,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:11:43,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:43,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:45,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:45,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815261257] [2021-10-08 18:11:45,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815261257] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:45,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:45,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:11:45,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764498042] [2021-10-08 18:11:45,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:11:45,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:45,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:11:45,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:11:45,994 INFO L87 Difference]: Start difference. First operand 1184 states and 3852 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:12:11,506 INFO L93 Difference]: Finished difference Result 1748 states and 5312 transitions. [2021-10-08 18:12:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-08 18:12:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:12:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:11,512 INFO L225 Difference]: With dead ends: 1748 [2021-10-08 18:12:11,512 INFO L226 Difference]: Without dead ends: 1744 [2021-10-08 18:12:11,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 24241.9ms TimeCoverageRelationStatistics Valid=1282, Invalid=3688, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 18:12:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2021-10-08 18:12:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1200. [2021-10-08 18:12:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1199 states have (on average 3.261050875729775) internal successors, (3910), 1199 states have internal predecessors, (3910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 3910 transitions. [2021-10-08 18:12:11,537 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 3910 transitions. Word has length 20 [2021-10-08 18:12:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:12:11,538 INFO L470 AbstractCegarLoop]: Abstraction has 1200 states and 3910 transitions. [2021-10-08 18:12:11,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 3910 transitions. [2021-10-08 18:12:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:12:11,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:12:11,541 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:12:11,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-08 18:12:11,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:12:11,742 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:12:11,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:12:11,743 INFO L82 PathProgramCache]: Analyzing trace with hash -854272433, now seen corresponding path program 62 times [2021-10-08 18:12:11,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:12:11,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651051677] [2021-10-08 18:12:11,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:12:11,745 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:12:11,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:12:11,746 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:12:11,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-08 18:12:13,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:12:13,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:12:13,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:12:13,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:12:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:13,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:12:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:15,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:12:15,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651051677] [2021-10-08 18:12:15,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651051677] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:12:15,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:12:15,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:12:15,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24663492] [2021-10-08 18:12:15,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:12:15,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:12:15,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:12:15,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:12:15,447 INFO L87 Difference]: Start difference. First operand 1200 states and 3910 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:12:39,355 INFO L93 Difference]: Finished difference Result 1992 states and 5757 transitions. [2021-10-08 18:12:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-08 18:12:39,356 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:12:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:39,361 INFO L225 Difference]: With dead ends: 1992 [2021-10-08 18:12:39,362 INFO L226 Difference]: Without dead ends: 1948 [2021-10-08 18:12:39,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 22497.4ms TimeCoverageRelationStatistics Valid=1581, Invalid=6609, Unknown=0, NotChecked=0, Total=8190 [2021-10-08 18:12:39,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2021-10-08 18:12:39,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1236. [2021-10-08 18:12:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 3.266396761133603) internal successors, (4034), 1235 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 4034 transitions. [2021-10-08 18:12:39,389 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 4034 transitions. Word has length 20 [2021-10-08 18:12:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:12:39,389 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 4034 transitions. [2021-10-08 18:12:39,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 4034 transitions. [2021-10-08 18:12:39,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:12:39,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:12:39,394 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:12:39,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-08 18:12:39,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:12:39,609 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:12:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:12:39,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1979598517, now seen corresponding path program 63 times [2021-10-08 18:12:39,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:12:39,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618327865] [2021-10-08 18:12:39,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:12:39,611 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:12:39,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:12:39,612 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:12:39,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-08 18:12:41,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:12:41,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:12:41,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:12:41,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:12:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:41,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:12:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:42,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:12:42,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618327865] [2021-10-08 18:12:42,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618327865] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:12:42,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:12:42,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:12:42,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830609831] [2021-10-08 18:12:42,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:12:42,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:12:42,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:12:42,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:12:42,600 INFO L87 Difference]: Start difference. First operand 1236 states and 4034 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:55,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:12:55,540 INFO L93 Difference]: Finished difference Result 1814 states and 5348 transitions. [2021-10-08 18:12:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-08 18:12:55,542 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:12:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:55,545 INFO L225 Difference]: With dead ends: 1814 [2021-10-08 18:12:55,545 INFO L226 Difference]: Without dead ends: 1814 [2021-10-08 18:12:55,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 11885.6ms TimeCoverageRelationStatistics Valid=1131, Invalid=5189, Unknown=0, NotChecked=0, Total=6320 [2021-10-08 18:12:55,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2021-10-08 18:12:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1238. [2021-10-08 18:12:55,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.2683912691996766) internal successors, (4043), 1237 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:55,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4043 transitions. [2021-10-08 18:12:55,570 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4043 transitions. Word has length 20 [2021-10-08 18:12:55,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:12:55,571 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 4043 transitions. [2021-10-08 18:12:55,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:55,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4043 transitions. [2021-10-08 18:12:55,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:12:55,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:12:55,574 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:12:55,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-08 18:12:55,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:12:55,774 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:12:55,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:12:55,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1388647499, now seen corresponding path program 64 times [2021-10-08 18:12:55,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:12:55,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020196004] [2021-10-08 18:12:55,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:12:55,776 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:12:55,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:12:55,777 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:12:55,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-08 18:12:57,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:12:57,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:12:57,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 18:12:57,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:12:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:57,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:00,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:00,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020196004] [2021-10-08 18:13:00,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020196004] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:00,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:00,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-08 18:13:00,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546667350] [2021-10-08 18:13:00,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 18:13:00,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:00,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 18:13:00,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:13:00,887 INFO L87 Difference]: Start difference. First operand 1238 states and 4043 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:20,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:20,598 INFO L93 Difference]: Finished difference Result 1720 states and 5128 transitions. [2021-10-08 18:13:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:13:20,600 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:13:20,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:20,604 INFO L225 Difference]: With dead ends: 1720 [2021-10-08 18:13:20,604 INFO L226 Difference]: Without dead ends: 1692 [2021-10-08 18:13:20,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 18728.3ms TimeCoverageRelationStatistics Valid=479, Invalid=1873, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 18:13:20,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-10-08 18:13:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1270. [2021-10-08 18:13:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.2710795902285263) internal successors, (4151), 1269 states have internal predecessors, (4151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4151 transitions. [2021-10-08 18:13:20,630 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4151 transitions. Word has length 20 [2021-10-08 18:13:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:20,630 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 4151 transitions. [2021-10-08 18:13:20,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:20,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4151 transitions. [2021-10-08 18:13:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:13:20,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:20,633 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:20,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:20,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:20,834 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:13:20,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:20,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1617182323, now seen corresponding path program 65 times [2021-10-08 18:13:20,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:20,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613980040] [2021-10-08 18:13:20,836 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:13:20,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:20,838 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:20,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-08 18:13:22,288 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:13:22,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:22,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:13:22,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:22,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:23,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:23,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613980040] [2021-10-08 18:13:23,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613980040] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:23,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:23,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:13:23,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451472425] [2021-10-08 18:13:23,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:13:23,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:23,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:13:23,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:13:23,561 INFO L87 Difference]: Start difference. First operand 1270 states and 4151 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:34,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:34,216 INFO L93 Difference]: Finished difference Result 1772 states and 5318 transitions. [2021-10-08 18:13:34,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-08 18:13:34,217 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:13:34,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:34,221 INFO L225 Difference]: With dead ends: 1772 [2021-10-08 18:13:34,221 INFO L226 Difference]: Without dead ends: 1764 [2021-10-08 18:13:34,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 9168.0ms TimeCoverageRelationStatistics Valid=833, Invalid=2589, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 18:13:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-10-08 18:13:34,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1290. [2021-10-08 18:13:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.282389449185415) internal successors, (4231), 1289 states have internal predecessors, (4231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 4231 transitions. [2021-10-08 18:13:34,249 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 4231 transitions. Word has length 20 [2021-10-08 18:13:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:34,250 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 4231 transitions. [2021-10-08 18:13:34,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 4231 transitions. [2021-10-08 18:13:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:13:34,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:34,253 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:34,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:34,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:34,455 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:13:34,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:34,456 INFO L82 PathProgramCache]: Analyzing trace with hash 923400245, now seen corresponding path program 66 times [2021-10-08 18:13:34,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:34,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780236654] [2021-10-08 18:13:34,457 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:13:34,457 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:34,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:34,459 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:34,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-08 18:13:36,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-08 18:13:36,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:36,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:13:36,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:36,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:37,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:37,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780236654] [2021-10-08 18:13:37,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780236654] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:37,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:37,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-08 18:13:37,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857907472] [2021-10-08 18:13:37,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:13:37,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:37,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:13:37,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:13:37,965 INFO L87 Difference]: Start difference. First operand 1290 states and 4231 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-08 18:13:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 18:13:41,910 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:13:41,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:41,934 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:13:41,934 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:13:42,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:42,113 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). [2021-10-08 18:13:42,115 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:13:42,115 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:13:42,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:13:42,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:13:42,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:13:42,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:13:42,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:13:42,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:13:42,117 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:13:42,117 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:13:42,117 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:13:42,121 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:13:42,122 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:13:42,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 06:13:42 BasicIcfg [2021-10-08 18:13:42,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 18:13:42,125 INFO L168 Benchmark]: Toolchain (without parser) took 822340.35 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 130.0 MB in the beginning and 118.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 43.5 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:42,125 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:13:42,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.34 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 119.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:42,126 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.09 ms. Allocated memory is still 155.2 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:42,126 INFO L168 Benchmark]: Boogie Preprocessor took 31.89 ms. Allocated memory is still 155.2 MB. Free memory was 117.5 MB in the beginning and 116.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:42,126 INFO L168 Benchmark]: RCFGBuilder took 910.83 ms. Allocated memory is still 155.2 MB. Free memory was 116.1 MB in the beginning and 136.3 MB in the end (delta: -20.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:42,127 INFO L168 Benchmark]: TraceAbstraction took 821039.37 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 135.8 MB in the beginning and 118.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:42,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.34 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 119.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.09 ms. Allocated memory is still 155.2 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.89 ms. Allocated memory is still 155.2 MB. Free memory was 117.5 MB in the beginning and 116.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 910.83 ms. Allocated memory is still 155.2 MB. Free memory was 116.1 MB in the beginning and 136.3 MB in the end (delta: -20.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 821039.37 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 135.8 MB in the beginning and 118.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8447.6ms, 86 PlacesBefore, 32 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 88 TotalNumberOfCompositions, 656 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 655, positive: 653, positive conditional: 0, positive unconditional: 653, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 335, positive: 333, positive conditional: 0, positive unconditional: 333, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 335, positive: 333, positive conditional: 0, positive unconditional: 333, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 655, positive: 320, positive conditional: 0, positive unconditional: 320, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 335, unknown conditional: 0, unknown unconditional: 335] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1290states) and FLOYD_HOARE automaton (currently 28 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (112 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 97 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 820824.5ms, OverallIterations: 73, TraceHistogramMax: 5, EmptinessCheckTime: 133.7ms, AutomataDifference: 629218.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8522.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2897 SDtfs, 10025 SDslu, 20331 SDs, 0 SdLazy, 25674 SolverSat, 5268 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86492.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4317 GetRequests, 1413 SyntacticMatches, 1 SemanticMatches, 2903 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37554 ImplicationChecksByTransitivity, 592898.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1290occurred in iteration=72, InterpolantAutomatonStates: 2699, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1218.0ms AutomataMinimizationTime, 72 MinimizatonAttempts, 17798 StatesRemovedByMinimization, 66 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 511.7ms SsaConstructionTime, 7529.4ms SatisfiabilityAnalysisTime, 118252.8ms InterpolantComputationTime, 1252 NumberOfCodeBlocks, 1252 NumberOfCodeBlocksAsserted, 165 NumberOfCheckSat, 2358 ConstructedInterpolants, 0 QuantifiedInterpolants, 32791 SizeOfPredicates, 480 NumberOfNonLiveVariables, 5495 ConjunctsInSsa, 1132 ConjunctsInUnsatCore, 146 InterpolantComputations, 12 PerfectInterpolantSequences, 106/1414 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown