/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-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:20:20,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:20:20,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:20:20,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 16:20:20,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 16:20:20,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 16:20:20,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 16:20:20,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 16:20:20,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 16:20:20,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 16:20:20,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 16:20:20,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 16:20:20,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 16:20:20,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 16:20:20,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 16:20:20,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 16:20:20,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 16:20:20,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 16:20:20,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 16:20:20,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 16:20:20,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 16:20:20,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 16:20:20,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 16:20:20,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 16:20:20,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 16:20:20,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:20:20,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:20:20,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:20:20,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 16:20:20,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:20:20,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:20:20,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:20:20,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:20:20,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:20:20,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:20:20,251 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:20:20,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:20:20,252 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:20:20,252 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:20:20,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:20:20,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:20:20,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:20:20,254 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:20:20,254 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:20:20,254 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:20:20,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:20:20,255 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:20:20,255 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:20:20,255 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:20:20,256 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:20:20,256 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:20:20,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:20:20,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:20:20,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:20:20,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:20:20,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:20:20,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:20:20,257 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:20:20,258 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:20:20,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:20:20,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:20:20,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:20:20,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:20:20,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:20:20,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:20:20,722 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:20:20,723 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:20:20,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2021-10-07 16:20:20,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c107a107/172d14b5c9a24ba996f169be9c2f4b75/FLAG8073c886f [2021-10-07 16:20:21,408 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:20:21,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2021-10-07 16:20:21,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c107a107/172d14b5c9a24ba996f169be9c2f4b75/FLAG8073c886f [2021-10-07 16:20:21,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c107a107/172d14b5c9a24ba996f169be9c2f4b75 [2021-10-07 16:20:21,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:20:21,813 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:20:21,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:20:21,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:20:21,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:20:21,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:20:21" (1/1) ... [2021-10-07 16:20:21,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f2c179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:21, skipping insertion in model container [2021-10-07 16:20:21,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:20:21" (1/1) ... [2021-10-07 16:20:21,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:20:21,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:20:22,046 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-more-nonblocking-counter-alt2.wvr.c[2075,2088] [2021-10-07 16:20:22,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:20:22,065 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:20:22,091 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-more-nonblocking-counter-alt2.wvr.c[2075,2088] [2021-10-07 16:20:22,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:20:22,112 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:20:22,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22 WrapperNode [2021-10-07 16:20:22,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:20:22,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:20:22,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:20:22,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:20:22,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22" (1/1) ... [2021-10-07 16:20:22,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22" (1/1) ... [2021-10-07 16:20:22,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:20:22,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:20:22,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:20:22,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:20:22,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22" (1/1) ... [2021-10-07 16:20:22,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22" (1/1) ... [2021-10-07 16:20:22,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22" (1/1) ... [2021-10-07 16:20:22,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22" (1/1) ... [2021-10-07 16:20:22,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22" (1/1) ... [2021-10-07 16:20:22,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22" (1/1) ... [2021-10-07 16:20:22,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22" (1/1) ... [2021-10-07 16:20:22,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:20:22,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:20:22,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:20:22,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:20:22,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22" (1/1) ... [2021-10-07 16:20:22,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:20:22,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:20:22,241 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) [2021-10-07 16:20:22,249 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 [2021-10-07 16:20:22,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:20:22,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:20:22,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:20:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:20:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:20:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:20:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 16:20:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 16:20:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:20:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:20:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:20:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:20:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:20:22,312 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 16:20:22,855 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:20:22,855 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-07 16:20:22,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:20:22 BoogieIcfgContainer [2021-10-07 16:20:22,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:20:22,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:20:22,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:20:22,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:20:22,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:20:21" (1/3) ... [2021-10-07 16:20:22,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507ce353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:20:22, skipping insertion in model container [2021-10-07 16:20:22,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:20:22" (2/3) ... [2021-10-07 16:20:22,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507ce353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:20:22, skipping insertion in model container [2021-10-07 16:20:22,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:20:22" (3/3) ... [2021-10-07 16:20:22,880 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2021-10-07 16:20:22,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:20:22,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 16:20:22,887 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:20:22,943 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,944 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,946 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,947 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,947 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,947 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,948 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,949 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,949 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,949 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,950 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,951 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,952 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,952 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,953 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,953 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,954 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,954 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,954 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,955 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,956 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,956 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,957 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,957 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,961 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,961 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,961 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,962 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,965 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,966 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:20:22,971 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 16:20:23,025 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:20:23,033 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 [2021-10-07 16:20:23,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-07 16:20:23,050 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:20:23,063 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 88 transitions, 192 flow [2021-10-07 16:20:23,067 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 88 transitions, 192 flow [2021-10-07 16:20:23,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 88 transitions, 192 flow [2021-10-07 16:20:23,144 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2021-10-07 16:20:23,144 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 16:20:23,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 6/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-10-07 16:20:23,156 INFO L116 LiptonReduction]: Number of co-enabled transitions 540 [2021-10-07 16:20:30,087 INFO L131 LiptonReduction]: Checked pairs total: 710 [2021-10-07 16:20:30,088 INFO L133 LiptonReduction]: Total number of compositions: 92 [2021-10-07 16:20:30,099 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-07 16:20:30,115 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) [2021-10-07 16:20:30,118 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) [2021-10-07 16:20:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 16:20:30,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:30,142 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 16:20:30,142 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:20:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:30,149 INFO L82 PathProgramCache]: Analyzing trace with hash 357, now seen corresponding path program 1 times [2021-10-07 16:20:30,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:30,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086470049] [2021-10-07 16:20:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:20:30,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:30,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:30,169 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) [2021-10-07 16:20:30,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 16:20:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:20:30,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 16:20:30,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:30,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:30,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:30,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086470049] [2021-10-07 16:20:30,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086470049] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:20:30,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:20:30,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 16:20:30,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861310610] [2021-10-07 16:20:30,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 16:20:30,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:30,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 16:20:30,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 16:20:30,276 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) [2021-10-07 16:20:30,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:30,294 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-07 16:20:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 16:20:30,296 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 [2021-10-07 16:20:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:30,308 INFO L225 Difference]: With dead ends: 64 [2021-10-07 16:20:30,308 INFO L226 Difference]: Without dead ends: 64 [2021-10-07 16:20:30,309 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 [2021-10-07 16:20:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-07 16:20:30,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-07 16:20:30,350 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) [2021-10-07 16:20:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-07 16:20:30,354 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-07 16:20:30,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:30,354 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-07 16:20:30,354 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) [2021-10-07 16:20:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-07 16:20:30,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:20:30,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:30,356 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:20:30,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:30,567 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 [2021-10-07 16:20:30,567 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:20:30,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 351599, now seen corresponding path program 1 times [2021-10-07 16:20:30,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:30,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623843094] [2021-10-07 16:20:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:20:30,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:30,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:30,571 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) [2021-10-07 16:20:30,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 16:20:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:20:30,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:20:30,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:30,924 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-07 16:20:30,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-07 16:20:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:31,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:31,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:31,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623843094] [2021-10-07 16:20:31,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623843094] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:20:31,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:20:31,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:20:31,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98869332] [2021-10-07 16:20:31,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:20:31,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:31,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:20:31,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:20:31,348 INFO L87 Difference]: Start difference. First operand 64 states and 151 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) [2021-10-07 16:20:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:31,384 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-07 16:20:31,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:20:31,385 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 [2021-10-07 16:20:31,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:31,387 INFO L225 Difference]: With dead ends: 58 [2021-10-07 16:20:31,387 INFO L226 Difference]: Without dead ends: 58 [2021-10-07 16:20:31,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:20:31,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-07 16:20:31,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-07 16:20:31,397 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) [2021-10-07 16:20:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-07 16:20:31,399 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-07 16:20:31,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:31,399 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-07 16:20:31,400 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) [2021-10-07 16:20:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-07 16:20:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:20:31,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:31,401 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:20:31,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:31,614 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 [2021-10-07 16:20:31,615 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:20:31,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:31,620 INFO L82 PathProgramCache]: Analyzing trace with hash 351601, now seen corresponding path program 1 times [2021-10-07 16:20:31,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:31,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993201234] [2021-10-07 16:20:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:20:31,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:31,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:31,623 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) [2021-10-07 16:20:31,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 16:20:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:20:31,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:20:31,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:31,785 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 16:20:31,786 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 [2021-10-07 16:20:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:31,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:31,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:31,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993201234] [2021-10-07 16:20:31,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993201234] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:20:31,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:20:31,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:20:31,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137769802] [2021-10-07 16:20:31,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:20:31,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:20:31,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:20:31,914 INFO L87 Difference]: Start difference. First operand 58 states and 139 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) [2021-10-07 16:20:31,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:31,939 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-07 16:20:31,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:20:31,941 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 [2021-10-07 16:20:31,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:31,942 INFO L225 Difference]: With dead ends: 52 [2021-10-07 16:20:31,942 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 16:20:31,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:20:31,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 16:20:31,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-07 16:20:31,949 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) [2021-10-07 16:20:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-07 16:20:31,951 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-07 16:20:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:31,951 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-07 16:20:31,951 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) [2021-10-07 16:20:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-07 16:20:31,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:20:31,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:31,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:20:31,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:32,167 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 [2021-10-07 16:20:32,167 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:20:32,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:32,168 INFO L82 PathProgramCache]: Analyzing trace with hash 337895088, now seen corresponding path program 1 times [2021-10-07 16:20:32,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:32,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836331458] [2021-10-07 16:20:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:20:32,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:32,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:32,171 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) [2021-10-07 16:20:32,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:20:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:20:32,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:20:32,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:32,331 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-07 16:20:32,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-07 16:20:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:32,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:32,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:32,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836331458] [2021-10-07 16:20:32,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836331458] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:20:32,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:20:32,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:20:32,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802885422] [2021-10-07 16:20:32,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:20:32,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:20:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:20:32,625 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) [2021-10-07 16:20:32,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:32,641 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-07 16:20:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:20:32,642 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 [2021-10-07 16:20:32,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:32,643 INFO L225 Difference]: With dead ends: 43 [2021-10-07 16:20:32,643 INFO L226 Difference]: Without dead ends: 43 [2021-10-07 16:20:32,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:20:32,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-07 16:20:32,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-07 16:20:32,648 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) [2021-10-07 16:20:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-07 16:20:32,649 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-07 16:20:32,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:32,650 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-07 16:20:32,651 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) [2021-10-07 16:20:32,651 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-07 16:20:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:20:32,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:32,652 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:20:32,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:32,864 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 [2021-10-07 16:20:32,864 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:20:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:32,866 INFO L82 PathProgramCache]: Analyzing trace with hash 337895090, now seen corresponding path program 1 times [2021-10-07 16:20:32,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:32,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859939040] [2021-10-07 16:20:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:20:32,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:32,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:32,869 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) [2021-10-07 16:20:32,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:20:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:20:32,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:20:32,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:33,035 INFO L354 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2021-10-07 16:20:33,036 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 34 treesize of output 50 [2021-10-07 16:20:33,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 87 [2021-10-07 16:20:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:33,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:33,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:33,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859939040] [2021-10-07 16:20:33,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859939040] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:20:33,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:20:33,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:20:33,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139110418] [2021-10-07 16:20:33,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:20:33,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:33,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:20:33,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:20:33,339 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:33,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:33,357 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-07 16:20:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:20:33,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 [2021-10-07 16:20:33,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:33,359 INFO L225 Difference]: With dead ends: 34 [2021-10-07 16:20:33,359 INFO L226 Difference]: Without dead ends: 34 [2021-10-07 16:20:33,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:20:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-07 16:20:33,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-07 16:20:33,364 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) [2021-10-07 16:20:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-07 16:20:33,364 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-07 16:20:33,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:33,365 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-07 16:20:33,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-07 16:20:33,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:20:33,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:33,366 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:33,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:33,567 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 [2021-10-07 16:20:33,568 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)] === [2021-10-07 16:20:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:33,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1554863180, now seen corresponding path program 1 times [2021-10-07 16:20:33,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:33,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726559246] [2021-10-07 16:20:33,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:20:33,571 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:33,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:33,573 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) [2021-10-07 16:20:33,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 16:20:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:20:33,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:20:33,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:33,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:33,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:33,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726559246] [2021-10-07 16:20:33,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726559246] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:20:33,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:20:33,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:20:33,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857839214] [2021-10-07 16:20:33,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:20:33,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:33,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:20:33,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:20:33,723 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) [2021-10-07 16:20:33,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:33,740 INFO L93 Difference]: Finished difference Result 57 states and 124 transitions. [2021-10-07 16:20:33,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:20:33,741 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 [2021-10-07 16:20:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:33,742 INFO L225 Difference]: With dead ends: 57 [2021-10-07 16:20:33,742 INFO L226 Difference]: Without dead ends: 42 [2021-10-07 16:20:33,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:20:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-07 16:20:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-07 16:20:33,747 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) [2021-10-07 16:20:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2021-10-07 16:20:33,748 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2021-10-07 16:20:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:33,748 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2021-10-07 16:20:33,749 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) [2021-10-07 16:20:33,749 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2021-10-07 16:20:33,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:20:33,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:33,750 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:33,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:33,963 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 [2021-10-07 16:20:33,964 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)] === [2021-10-07 16:20:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1576251979, now seen corresponding path program 1 times [2021-10-07 16:20:33,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:33,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430921907] [2021-10-07 16:20:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:20:33,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:33,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:33,968 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) [2021-10-07 16:20:33,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 16:20:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:20:34,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 16:20:34,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:20:34,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:20:34,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:34,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430921907] [2021-10-07 16:20:34,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430921907] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:20:34,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:20:34,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-07 16:20:34,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698158070] [2021-10-07 16:20:34,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:20:34,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:20:34,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:20:34,135 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:34,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:34,198 INFO L93 Difference]: Finished difference Result 52 states and 116 transitions. [2021-10-07 16:20:34,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:20:34,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 [2021-10-07 16:20:34,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:34,200 INFO L225 Difference]: With dead ends: 52 [2021-10-07 16:20:34,200 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 16:20:34,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:20:34,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 16:20:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-07 16:20:34,211 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) [2021-10-07 16:20:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-07 16:20:34,214 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-07 16:20:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:34,215 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-07 16:20:34,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-07 16:20:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:20:34,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:34,218 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:34,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:34,418 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 [2021-10-07 16:20:34,419 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)] === [2021-10-07 16:20:34,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:34,420 INFO L82 PathProgramCache]: Analyzing trace with hash -189416518, now seen corresponding path program 1 times [2021-10-07 16:20:34,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:34,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534401204] [2021-10-07 16:20:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:20:34,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:34,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:34,425 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) [2021-10-07 16:20:34,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 16:20:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:20:34,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:20:34,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:20:34,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:20:34,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:34,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534401204] [2021-10-07 16:20:34,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534401204] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:20:34,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:20:34,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 16:20:34,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192174640] [2021-10-07 16:20:34,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:20:34,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:20:34,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:20:34,847 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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) [2021-10-07 16:20:34,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:34,945 INFO L93 Difference]: Finished difference Result 60 states and 134 transitions. [2021-10-07 16:20:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:20:34,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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 15 [2021-10-07 16:20:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:34,947 INFO L225 Difference]: With dead ends: 60 [2021-10-07 16:20:34,947 INFO L226 Difference]: Without dead ends: 60 [2021-10-07 16:20:34,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:20:34,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-07 16:20:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2021-10-07 16:20:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 43 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 96 transitions. [2021-10-07 16:20:34,952 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 96 transitions. Word has length 15 [2021-10-07 16:20:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:34,953 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 96 transitions. [2021-10-07 16:20:34,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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) [2021-10-07 16:20:34,953 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 96 transitions. [2021-10-07 16:20:34,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:20:34,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:34,954 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:34,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:35,166 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 [2021-10-07 16:20:35,168 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)] === [2021-10-07 16:20:35,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:35,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1499193478, now seen corresponding path program 2 times [2021-10-07 16:20:35,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:35,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142161421] [2021-10-07 16:20:35,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:20:35,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:35,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:35,171 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) [2021-10-07 16:20:35,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 16:20:35,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:20:35,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:20:35,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:20:35,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:20:35,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:20:35,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:35,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142161421] [2021-10-07 16:20:35,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142161421] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:20:35,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:20:35,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-07 16:20:35,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077420762] [2021-10-07 16:20:35,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:20:35,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:20:35,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:20:35,525 INFO L87 Difference]: Start difference. First operand 44 states and 96 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:35,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:35,584 INFO L93 Difference]: Finished difference Result 87 states and 191 transitions. [2021-10-07 16:20:35,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:20:35,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 [2021-10-07 16:20:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:35,586 INFO L225 Difference]: With dead ends: 87 [2021-10-07 16:20:35,586 INFO L226 Difference]: Without dead ends: 68 [2021-10-07 16:20:35,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:20:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-07 16:20:35,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2021-10-07 16:20:35,591 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) [2021-10-07 16:20:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 136 transitions. [2021-10-07 16:20:35,592 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 136 transitions. Word has length 15 [2021-10-07 16:20:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:35,593 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 136 transitions. [2021-10-07 16:20:35,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 136 transitions. [2021-10-07 16:20:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:20:35,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:35,594 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:35,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:35,806 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 [2021-10-07 16:20:35,807 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)] === [2021-10-07 16:20:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:35,808 INFO L82 PathProgramCache]: Analyzing trace with hash 967157397, now seen corresponding path program 3 times [2021-10-07 16:20:35,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:35,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602042759] [2021-10-07 16:20:35,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:20:35,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:35,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:35,811 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) [2021-10-07 16:20:35,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 16:20:35,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:20:35,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:20:35,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:20:35,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:36,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:37,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:37,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602042759] [2021-10-07 16:20:37,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602042759] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:20:37,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:20:37,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 16:20:37,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261697223] [2021-10-07 16:20:37,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:20:37,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:20:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:20:37,263 INFO L87 Difference]: Start difference. First operand 60 states and 136 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-07 16:20:42,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:42,158 INFO L93 Difference]: Finished difference Result 131 states and 297 transitions. [2021-10-07 16:20:42,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:20:42,159 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 16 [2021-10-07 16:20:42,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:42,161 INFO L225 Difference]: With dead ends: 131 [2021-10-07 16:20:42,161 INFO L226 Difference]: Without dead ends: 124 [2021-10-07 16:20:42,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 4374.3ms TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:20:42,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-07 16:20:42,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 86. [2021-10-07 16:20:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.5764705882352943) internal successors, (219), 85 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:42,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 219 transitions. [2021-10-07 16:20:42,170 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 219 transitions. Word has length 16 [2021-10-07 16:20:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:42,171 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 219 transitions. [2021-10-07 16:20:42,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-07 16:20:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 219 transitions. [2021-10-07 16:20:42,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:20:42,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:42,173 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:42,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:42,386 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 [2021-10-07 16:20:42,387 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)] === [2021-10-07 16:20:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:42,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1610655485, now seen corresponding path program 4 times [2021-10-07 16:20:42,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:42,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954090929] [2021-10-07 16:20:42,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:20:42,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:42,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:42,390 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) [2021-10-07 16:20:42,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 16:20:42,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:20:42,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:20:42,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:20:42,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:42,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:43,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:43,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954090929] [2021-10-07 16:20:43,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954090929] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:20:43,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:20:43,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:20:43,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621842324] [2021-10-07 16:20:43,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:20:43,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:43,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:20:43,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:20:43,580 INFO L87 Difference]: Start difference. First operand 86 states and 219 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-07 16:20:46,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:46,226 INFO L93 Difference]: Finished difference Result 190 states and 429 transitions. [2021-10-07 16:20:46,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 16:20:46,228 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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 16 [2021-10-07 16:20:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:46,230 INFO L225 Difference]: With dead ends: 190 [2021-10-07 16:20:46,230 INFO L226 Difference]: Without dead ends: 172 [2021-10-07 16:20:46,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2269.4ms TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:20:46,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-07 16:20:46,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 96. [2021-10-07 16:20:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.7157894736842105) internal successors, (258), 95 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 258 transitions. [2021-10-07 16:20:46,239 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 258 transitions. Word has length 16 [2021-10-07 16:20:46,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:46,240 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 258 transitions. [2021-10-07 16:20:46,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-07 16:20:46,240 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 258 transitions. [2021-10-07 16:20:46,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:20:46,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:46,242 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:46,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:46,454 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 [2021-10-07 16:20:46,455 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)] === [2021-10-07 16:20:46,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:46,456 INFO L82 PathProgramCache]: Analyzing trace with hash -47514385, now seen corresponding path program 5 times [2021-10-07 16:20:46,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:46,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968909883] [2021-10-07 16:20:46,457 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:20:46,457 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:46,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:46,458 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) [2021-10-07 16:20:46,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 16:20:46,564 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:20:46,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:20:46,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:20:46,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:46,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:47,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:47,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968909883] [2021-10-07 16:20:47,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968909883] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:20:47,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:20:47,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-07 16:20:47,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045568390] [2021-10-07 16:20:47,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:20:47,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:47,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:20:47,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:20:47,065 INFO L87 Difference]: Start difference. First operand 96 states and 258 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:47,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:47,542 INFO L93 Difference]: Finished difference Result 156 states and 399 transitions. [2021-10-07 16:20:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:20:47,543 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2021-10-07 16:20:47,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:47,545 INFO L225 Difference]: With dead ends: 156 [2021-10-07 16:20:47,545 INFO L226 Difference]: Without dead ends: 156 [2021-10-07 16:20:47,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 386.3ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:20:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-07 16:20:47,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 114. [2021-10-07 16:20:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.690265486725664) internal successors, (304), 113 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 304 transitions. [2021-10-07 16:20:47,554 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 304 transitions. Word has length 16 [2021-10-07 16:20:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:47,555 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 304 transitions. [2021-10-07 16:20:47,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 304 transitions. [2021-10-07 16:20:47,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:20:47,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:47,557 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:47,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:47,769 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 [2021-10-07 16:20:47,770 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)] === [2021-10-07 16:20:47,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:47,771 INFO L82 PathProgramCache]: Analyzing trace with hash 660798609, now seen corresponding path program 6 times [2021-10-07 16:20:47,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:47,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568730597] [2021-10-07 16:20:47,772 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:20:47,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:47,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:47,773 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) [2021-10-07 16:20:47,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 16:20:47,931 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:20:47,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:20:47,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:20:47,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:48,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:48,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:48,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568730597] [2021-10-07 16:20:48,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568730597] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:20:48,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:20:48,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 16:20:48,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303992177] [2021-10-07 16:20:48,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:20:48,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:20:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:20:48,825 INFO L87 Difference]: Start difference. First operand 114 states and 304 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-07 16:20:50,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:50,396 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2021-10-07 16:20:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 16:20:50,397 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 16 [2021-10-07 16:20:50,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:50,399 INFO L225 Difference]: With dead ends: 185 [2021-10-07 16:20:50,400 INFO L226 Difference]: Without dead ends: 178 [2021-10-07 16:20:50,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1420.5ms TimeCoverageRelationStatistics Valid=235, Invalid=521, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:20:50,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-07 16:20:50,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2021-10-07 16:20:50,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.784) internal successors, (348), 125 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:50,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 348 transitions. [2021-10-07 16:20:50,409 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 348 transitions. Word has length 16 [2021-10-07 16:20:50,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:50,409 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 348 transitions. [2021-10-07 16:20:50,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-07 16:20:50,410 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 348 transitions. [2021-10-07 16:20:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:20:50,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:50,412 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:50,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-07 16:20:50,624 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 [2021-10-07 16:20:50,625 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)] === [2021-10-07 16:20:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:50,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1917014273, now seen corresponding path program 7 times [2021-10-07 16:20:50,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:50,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250243498] [2021-10-07 16:20:50,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:20:50,627 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:50,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:50,629 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) [2021-10-07 16:20:50,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 16:20:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:20:50,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:20:50,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:51,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:51,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:51,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250243498] [2021-10-07 16:20:51,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250243498] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:20:51,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:20:51,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:20:51,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483999992] [2021-10-07 16:20:51,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:20:51,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:20:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:20:51,614 INFO L87 Difference]: Start difference. First operand 126 states and 348 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-07 16:20:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:53,183 INFO L93 Difference]: Finished difference Result 247 states and 627 transitions. [2021-10-07 16:20:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:20:53,184 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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 16 [2021-10-07 16:20:53,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:53,186 INFO L225 Difference]: With dead ends: 247 [2021-10-07 16:20:53,186 INFO L226 Difference]: Without dead ends: 234 [2021-10-07 16:20:53,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1373.5ms TimeCoverageRelationStatistics Valid=232, Invalid=524, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:20:53,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-07 16:20:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 124. [2021-10-07 16:20:53,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.7235772357723578) internal successors, (335), 123 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 335 transitions. [2021-10-07 16:20:53,195 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 335 transitions. Word has length 16 [2021-10-07 16:20:53,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:53,195 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 335 transitions. [2021-10-07 16:20:53,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-07 16:20:53,196 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 335 transitions. [2021-10-07 16:20:53,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:20:53,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:53,197 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:53,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-07 16:20:53,409 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 [2021-10-07 16:20:53,410 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)] === [2021-10-07 16:20:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:53,411 INFO L82 PathProgramCache]: Analyzing trace with hash -353873173, now seen corresponding path program 8 times [2021-10-07 16:20:53,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:53,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587685667] [2021-10-07 16:20:53,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:20:53,412 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:53,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:53,413 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) [2021-10-07 16:20:53,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 16:20:53,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:20:53,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:20:53,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:20:53,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:53,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:54,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:54,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587685667] [2021-10-07 16:20:54,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587685667] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:20:54,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:20:54,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 16:20:54,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795014461] [2021-10-07 16:20:54,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:20:54,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:54,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:20:54,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:20:54,165 INFO L87 Difference]: Start difference. First operand 124 states and 335 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-07 16:20:55,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:55,609 INFO L93 Difference]: Finished difference Result 239 states and 568 transitions. [2021-10-07 16:20:55,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 16:20:55,610 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 16 [2021-10-07 16:20:55,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:55,612 INFO L225 Difference]: With dead ends: 239 [2021-10-07 16:20:55,612 INFO L226 Difference]: Without dead ends: 234 [2021-10-07 16:20:55,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1284.6ms TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2021-10-07 16:20:55,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-07 16:20:55,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 136. [2021-10-07 16:20:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.8518518518518516) internal successors, (385), 135 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 385 transitions. [2021-10-07 16:20:55,620 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 385 transitions. Word has length 16 [2021-10-07 16:20:55,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:55,621 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 385 transitions. [2021-10-07 16:20:55,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-07 16:20:55,621 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 385 transitions. [2021-10-07 16:20:55,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:20:55,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:55,622 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:55,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-07 16:20:55,834 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 [2021-10-07 16:20:55,835 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)] === [2021-10-07 16:20:55,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:55,836 INFO L82 PathProgramCache]: Analyzing trace with hash -335760671, now seen corresponding path program 9 times [2021-10-07 16:20:55,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:55,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672867534] [2021-10-07 16:20:55,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:20:55,838 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:55,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:55,839 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) [2021-10-07 16:20:55,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 16:20:56,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:20:56,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:20:56,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:20:56,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:56,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:56,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:56,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672867534] [2021-10-07 16:20:56,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672867534] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:20:56,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:20:56,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 16:20:56,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716468980] [2021-10-07 16:20:56,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:20:56,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:20:56,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:20:56,542 INFO L87 Difference]: Start difference. First operand 136 states and 385 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-07 16:20:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:57,114 INFO L93 Difference]: Finished difference Result 241 states and 628 transitions. [2021-10-07 16:20:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 16:20:57,115 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 16 [2021-10-07 16:20:57,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:57,119 INFO L225 Difference]: With dead ends: 241 [2021-10-07 16:20:57,119 INFO L226 Difference]: Without dead ends: 236 [2021-10-07 16:20:57,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 566.8ms TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:20:57,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-07 16:20:57,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 152. [2021-10-07 16:20:57,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.847682119205298) internal successors, (430), 151 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 430 transitions. [2021-10-07 16:20:57,128 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 430 transitions. Word has length 16 [2021-10-07 16:20:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:57,128 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 430 transitions. [2021-10-07 16:20:57,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-07 16:20:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 430 transitions. [2021-10-07 16:20:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:20:57,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:57,130 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:57,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:57,342 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 [2021-10-07 16:20:57,343 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)] === [2021-10-07 16:20:57,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:57,344 INFO L82 PathProgramCache]: Analyzing trace with hash -262146779, now seen corresponding path program 10 times [2021-10-07 16:20:57,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:57,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075925795] [2021-10-07 16:20:57,345 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:20:57,346 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:57,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:57,347 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) [2021-10-07 16:20:57,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 16:20:57,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:20:57,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:20:57,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:20:57,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:57,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:20:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:20:58,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:20:58,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075925795] [2021-10-07 16:20:58,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075925795] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:20:58,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:20:58,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:20:58,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435544225] [2021-10-07 16:20:58,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:20:58,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:20:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:20:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:20:58,679 INFO L87 Difference]: Start difference. First operand 152 states and 430 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-07 16:21:02,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:02,167 INFO L93 Difference]: Finished difference Result 271 states and 673 transitions. [2021-10-07 16:21:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:21:02,168 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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 16 [2021-10-07 16:21:02,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:02,170 INFO L225 Difference]: With dead ends: 271 [2021-10-07 16:21:02,170 INFO L226 Difference]: Without dead ends: 262 [2021-10-07 16:21:02,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 3140.5ms TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-10-07 16:21:02,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-07 16:21:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 164. [2021-10-07 16:21:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.920245398773006) internal successors, (476), 163 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 476 transitions. [2021-10-07 16:21:02,180 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 476 transitions. Word has length 16 [2021-10-07 16:21:02,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:02,181 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 476 transitions. [2021-10-07 16:21:02,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-07 16:21:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 476 transitions. [2021-10-07 16:21:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:21:02,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:02,182 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:02,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 16:21:02,389 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 [2021-10-07 16:21:02,390 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)] === [2021-10-07 16:21:02,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:02,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1455007635, now seen corresponding path program 11 times [2021-10-07 16:21:02,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:02,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650459880] [2021-10-07 16:21:02,392 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:21:02,393 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:02,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:02,394 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) [2021-10-07 16:21:02,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 16:21:02,574 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:21:02,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:21:02,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:21:02,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:02,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:03,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:03,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650459880] [2021-10-07 16:21:03,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650459880] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:03,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:03,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-07 16:21:03,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452587118] [2021-10-07 16:21:03,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:21:03,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:03,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:21:03,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:21:03,152 INFO L87 Difference]: Start difference. First operand 164 states and 476 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2021-10-07 16:21:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:04,024 INFO L93 Difference]: Finished difference Result 344 states and 861 transitions. [2021-10-07 16:21:04,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 16:21:04,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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 16 [2021-10-07 16:21:04,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:04,031 INFO L225 Difference]: With dead ends: 344 [2021-10-07 16:21:04,032 INFO L226 Difference]: Without dead ends: 336 [2021-10-07 16:21:04,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 743.4ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:21:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-10-07 16:21:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 188. [2021-10-07 16:21:04,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.9732620320855614) internal successors, (556), 187 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:04,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 556 transitions. [2021-10-07 16:21:04,044 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 556 transitions. Word has length 16 [2021-10-07 16:21:04,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:04,044 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 556 transitions. [2021-10-07 16:21:04,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2021-10-07 16:21:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 556 transitions. [2021-10-07 16:21:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:21:04,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:04,046 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:04,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 16:21:04,259 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 [2021-10-07 16:21:04,260 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)] === [2021-10-07 16:21:04,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:04,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1261501876, now seen corresponding path program 12 times [2021-10-07 16:21:04,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:04,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908324677] [2021-10-07 16:21:04,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:21:04,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:04,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:04,264 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) [2021-10-07 16:21:04,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 16:21:04,461 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:21:04,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:21:04,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:21:04,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:04,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:05,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:05,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908324677] [2021-10-07 16:21:05,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908324677] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:05,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:05,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 16:21:05,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165374427] [2021-10-07 16:21:05,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 16:21:05,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:05,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 16:21:05,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:21:05,493 INFO L87 Difference]: Start difference. First operand 188 states and 556 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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) [2021-10-07 16:21:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:07,703 INFO L93 Difference]: Finished difference Result 413 states and 1050 transitions. [2021-10-07 16:21:07,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 16:21:07,705 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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 17 [2021-10-07 16:21:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:07,708 INFO L225 Difference]: With dead ends: 413 [2021-10-07 16:21:07,708 INFO L226 Difference]: Without dead ends: 398 [2021-10-07 16:21:07,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1945.2ms TimeCoverageRelationStatistics Valid=231, Invalid=825, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 16:21:07,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-10-07 16:21:07,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 230. [2021-10-07 16:21:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 3.091703056768559) internal successors, (708), 229 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 708 transitions. [2021-10-07 16:21:07,722 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 708 transitions. Word has length 17 [2021-10-07 16:21:07,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:07,723 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 708 transitions. [2021-10-07 16:21:07,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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) [2021-10-07 16:21:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 708 transitions. [2021-10-07 16:21:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:21:07,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:07,724 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:07,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-07 16:21:07,940 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 [2021-10-07 16:21:07,941 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)] === [2021-10-07 16:21:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:07,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1821274500, now seen corresponding path program 13 times [2021-10-07 16:21:07,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:07,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049880401] [2021-10-07 16:21:07,943 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:21:07,943 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:07,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:07,945 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) [2021-10-07 16:21:07,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 16:21:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:21:08,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:21:08,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:21:08,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:21:08,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:08,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049880401] [2021-10-07 16:21:08,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049880401] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:08,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:08,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 16:21:08,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066420907] [2021-10-07 16:21:08,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 16:21:08,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:08,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 16:21:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:21:08,582 INFO L87 Difference]: Start difference. First operand 230 states and 708 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:08,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:08,901 INFO L93 Difference]: Finished difference Result 394 states and 1118 transitions. [2021-10-07 16:21:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:21:08,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 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 [2021-10-07 16:21:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:08,905 INFO L225 Difference]: With dead ends: 394 [2021-10-07 16:21:08,905 INFO L226 Difference]: Without dead ends: 371 [2021-10-07 16:21:08,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:21:08,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-10-07 16:21:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 272. [2021-10-07 16:21:08,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.103321033210332) internal successors, (841), 271 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 841 transitions. [2021-10-07 16:21:08,921 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 841 transitions. Word has length 17 [2021-10-07 16:21:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:08,921 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 841 transitions. [2021-10-07 16:21:08,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 841 transitions. [2021-10-07 16:21:08,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:21:08,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:08,923 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:08,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 16:21:09,130 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 [2021-10-07 16:21:09,131 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)] === [2021-10-07 16:21:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:09,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1714575524, now seen corresponding path program 14 times [2021-10-07 16:21:09,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:09,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882941352] [2021-10-07 16:21:09,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:21:09,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:09,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:09,135 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) [2021-10-07 16:21:09,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 16:21:09,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:21:09,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:21:09,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:21:09,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:09,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:21:09,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:09,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882941352] [2021-10-07 16:21:09,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882941352] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:09,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:09,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-10-07 16:21:09,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755959485] [2021-10-07 16:21:09,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:21:09,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:09,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:21:09,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:21:09,968 INFO L87 Difference]: Start difference. First operand 272 states and 841 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 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) [2021-10-07 16:21:11,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:11,592 INFO L93 Difference]: Finished difference Result 445 states and 1181 transitions. [2021-10-07 16:21:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 16:21:11,594 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 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 17 [2021-10-07 16:21:11,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:11,598 INFO L225 Difference]: With dead ends: 445 [2021-10-07 16:21:11,598 INFO L226 Difference]: Without dead ends: 436 [2021-10-07 16:21:11,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1214.8ms TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2021-10-07 16:21:11,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-10-07 16:21:11,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 290. [2021-10-07 16:21:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 3.124567474048443) internal successors, (903), 289 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 903 transitions. [2021-10-07 16:21:11,616 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 903 transitions. Word has length 17 [2021-10-07 16:21:11,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:11,616 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 903 transitions. [2021-10-07 16:21:11,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 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) [2021-10-07 16:21:11,616 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 903 transitions. [2021-10-07 16:21:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:21:11,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:11,618 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:11,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 16:21:11,833 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 [2021-10-07 16:21:11,834 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)] === [2021-10-07 16:21:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:11,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1732688026, now seen corresponding path program 15 times [2021-10-07 16:21:11,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:11,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238526109] [2021-10-07 16:21:11,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:21:11,835 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:11,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:11,837 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) [2021-10-07 16:21:11,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 16:21:12,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:21:12,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:21:12,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:21:12,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:12,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:12,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:12,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238526109] [2021-10-07 16:21:12,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238526109] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:12,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:12,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:21:12,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485618628] [2021-10-07 16:21:12,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 16:21:12,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:12,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 16:21:12,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:21:12,654 INFO L87 Difference]: Start difference. First operand 290 states and 903 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) [2021-10-07 16:21:14,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:14,306 INFO L93 Difference]: Finished difference Result 712 states and 1987 transitions. [2021-10-07 16:21:14,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 16:21:14,307 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 17 [2021-10-07 16:21:14,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:14,313 INFO L225 Difference]: With dead ends: 712 [2021-10-07 16:21:14,313 INFO L226 Difference]: Without dead ends: 692 [2021-10-07 16:21:14,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1444.7ms TimeCoverageRelationStatistics Valid=425, Invalid=1215, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 16:21:14,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-10-07 16:21:14,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 306. [2021-10-07 16:21:14,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.1081967213114754) internal successors, (948), 305 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:14,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 948 transitions. [2021-10-07 16:21:14,333 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 948 transitions. Word has length 17 [2021-10-07 16:21:14,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:14,334 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 948 transitions. [2021-10-07 16:21:14,334 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) [2021-10-07 16:21:14,334 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 948 transitions. [2021-10-07 16:21:14,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:21:14,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:14,336 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:14,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-07 16:21:14,548 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 [2021-10-07 16:21:14,549 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)] === [2021-10-07 16:21:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:14,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1459723714, now seen corresponding path program 16 times [2021-10-07 16:21:14,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:14,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669603312] [2021-10-07 16:21:14,551 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:21:14,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:14,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:14,552 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) [2021-10-07 16:21:14,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 16:21:14,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:21:14,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:21:14,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:21:14,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:15,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:16,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:16,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669603312] [2021-10-07 16:21:16,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669603312] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:16,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:16,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 16:21:16,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340490638] [2021-10-07 16:21:16,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:21:16,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:16,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:21:16,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:21:16,120 INFO L87 Difference]: Start difference. First operand 306 states and 948 transitions. Second operand has 16 states, 16 states have (on average 2.125) 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) [2021-10-07 16:21:18,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:18,394 INFO L93 Difference]: Finished difference Result 498 states and 1346 transitions. [2021-10-07 16:21:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 16:21:18,396 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) 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 17 [2021-10-07 16:21:18,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:18,401 INFO L225 Difference]: With dead ends: 498 [2021-10-07 16:21:18,401 INFO L226 Difference]: Without dead ends: 480 [2021-10-07 16:21:18,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2136.7ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-10-07 16:21:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-10-07 16:21:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 298. [2021-10-07 16:21:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 3.0841750841750843) internal successors, (916), 297 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 916 transitions. [2021-10-07 16:21:18,416 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 916 transitions. Word has length 17 [2021-10-07 16:21:18,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:18,416 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 916 transitions. [2021-10-07 16:21:18,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) 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) [2021-10-07 16:21:18,417 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 916 transitions. [2021-10-07 16:21:18,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:21:18,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:18,418 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:18,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 16:21:18,631 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 [2021-10-07 16:21:18,631 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)] === [2021-10-07 16:21:18,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:18,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1272102482, now seen corresponding path program 17 times [2021-10-07 16:21:18,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:18,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628706371] [2021-10-07 16:21:18,633 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:21:18,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:18,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:18,634 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) [2021-10-07 16:21:18,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 16:21:18,886 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:21:18,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:21:18,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:21:18,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:19,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:19,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:19,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628706371] [2021-10-07 16:21:19,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628706371] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:19,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:19,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 16:21:19,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421461062] [2021-10-07 16:21:19,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 16:21:19,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:19,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 16:21:19,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:21:19,680 INFO L87 Difference]: Start difference. First operand 298 states and 916 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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) [2021-10-07 16:21:20,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:20,933 INFO L93 Difference]: Finished difference Result 528 states and 1421 transitions. [2021-10-07 16:21:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 16:21:20,934 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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 17 [2021-10-07 16:21:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:20,939 INFO L225 Difference]: With dead ends: 528 [2021-10-07 16:21:20,939 INFO L226 Difference]: Without dead ends: 494 [2021-10-07 16:21:20,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 972.4ms TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:21:20,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-10-07 16:21:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 314. [2021-10-07 16:21:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 3.099041533546326) internal successors, (970), 313 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:20,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 970 transitions. [2021-10-07 16:21:20,955 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 970 transitions. Word has length 17 [2021-10-07 16:21:20,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:20,955 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 970 transitions. [2021-10-07 16:21:20,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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) [2021-10-07 16:21:20,955 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 970 transitions. [2021-10-07 16:21:20,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:21:20,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:20,957 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:20,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 16:21:21,170 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 [2021-10-07 16:21:21,171 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)] === [2021-10-07 16:21:21,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:21,171 INFO L82 PathProgramCache]: Analyzing trace with hash 822449611, now seen corresponding path program 18 times [2021-10-07 16:21:21,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:21,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556247027] [2021-10-07 16:21:21,173 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:21:21,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:21,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:21,175 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) [2021-10-07 16:21:21,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 16:21:21,461 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:21:21,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:21:21,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:21:21,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:21,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:22,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:22,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556247027] [2021-10-07 16:21:22,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556247027] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:22,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:22,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-07 16:21:22,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757317426] [2021-10-07 16:21:22,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:21:22,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:21:22,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:21:22,690 INFO L87 Difference]: Start difference. First operand 314 states and 970 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) [2021-10-07 16:21:26,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:26,669 INFO L93 Difference]: Finished difference Result 414 states and 1246 transitions. [2021-10-07 16:21:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 16:21:26,671 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 [2021-10-07 16:21:26,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:26,673 INFO L225 Difference]: With dead ends: 414 [2021-10-07 16:21:26,674 INFO L226 Difference]: Without dead ends: 412 [2021-10-07 16:21:26,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3739.3ms TimeCoverageRelationStatistics Valid=403, Invalid=1079, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 16:21:26,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-10-07 16:21:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 356. [2021-10-07 16:21:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.174647887323944) internal successors, (1127), 355 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1127 transitions. [2021-10-07 16:21:26,696 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1127 transitions. Word has length 18 [2021-10-07 16:21:26,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:26,696 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1127 transitions. [2021-10-07 16:21:26,697 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) [2021-10-07 16:21:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1127 transitions. [2021-10-07 16:21:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:21:26,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:26,699 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:26,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-07 16:21:26,915 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 [2021-10-07 16:21:26,916 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)] === [2021-10-07 16:21:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:26,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1755363271, now seen corresponding path program 19 times [2021-10-07 16:21:26,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:26,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229923753] [2021-10-07 16:21:26,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:21:26,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:26,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:26,919 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) [2021-10-07 16:21:26,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 16:21:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:21:27,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:21:27,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:27,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:28,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:28,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229923753] [2021-10-07 16:21:28,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229923753] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:28,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:28,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-07 16:21:28,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750503167] [2021-10-07 16:21:28,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:21:28,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:28,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:21:28,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:21:28,900 INFO L87 Difference]: Start difference. First operand 356 states and 1127 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) [2021-10-07 16:21:34,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:34,975 INFO L93 Difference]: Finished difference Result 601 states and 1715 transitions. [2021-10-07 16:21:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 16:21:34,976 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 18 [2021-10-07 16:21:34,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:34,980 INFO L225 Difference]: With dead ends: 601 [2021-10-07 16:21:34,980 INFO L226 Difference]: Without dead ends: 592 [2021-10-07 16:21:34,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 5623.9ms TimeCoverageRelationStatistics Valid=534, Invalid=1272, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 16:21:34,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-07 16:21:34,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 414. [2021-10-07 16:21:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 3.2832929782082325) internal successors, (1356), 413 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1356 transitions. [2021-10-07 16:21:34,997 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1356 transitions. Word has length 18 [2021-10-07 16:21:34,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:34,997 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 1356 transitions. [2021-10-07 16:21:34,998 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) [2021-10-07 16:21:34,998 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1356 transitions. [2021-10-07 16:21:34,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:21:35,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:35,000 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:35,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-07 16:21:35,213 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 [2021-10-07 16:21:35,213 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)] === [2021-10-07 16:21:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:35,214 INFO L82 PathProgramCache]: Analyzing trace with hash -192222171, now seen corresponding path program 20 times [2021-10-07 16:21:35,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:35,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973827664] [2021-10-07 16:21:35,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:21:35,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:35,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:35,217 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) [2021-10-07 16:21:35,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 16:21:35,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:21:35,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:21:35,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:21:35,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:35,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:37,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:37,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973827664] [2021-10-07 16:21:37,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973827664] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:37,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:37,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-07 16:21:37,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919032010] [2021-10-07 16:21:37,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:21:37,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:37,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:21:37,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:21:37,048 INFO L87 Difference]: Start difference. First operand 414 states and 1356 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) [2021-10-07 16:21:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:43,091 INFO L93 Difference]: Finished difference Result 737 states and 2222 transitions. [2021-10-07 16:21:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 16:21:43,093 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 18 [2021-10-07 16:21:43,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:43,098 INFO L225 Difference]: With dead ends: 737 [2021-10-07 16:21:43,099 INFO L226 Difference]: Without dead ends: 720 [2021-10-07 16:21:43,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 5806.0ms TimeCoverageRelationStatistics Valid=478, Invalid=1328, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 16:21:43,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-10-07 16:21:43,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 510. [2021-10-07 16:21:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 3.406679764243615) internal successors, (1734), 509 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1734 transitions. [2021-10-07 16:21:43,122 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1734 transitions. Word has length 18 [2021-10-07 16:21:43,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:43,122 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1734 transitions. [2021-10-07 16:21:43,122 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) [2021-10-07 16:21:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1734 transitions. [2021-10-07 16:21:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:21:43,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:43,125 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:43,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 16:21:43,341 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 [2021-10-07 16:21:43,341 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)] === [2021-10-07 16:21:43,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:43,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1020511673, now seen corresponding path program 21 times [2021-10-07 16:21:43,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:43,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033443748] [2021-10-07 16:21:43,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:21:43,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:43,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:43,344 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) [2021-10-07 16:21:43,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 16:21:43,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:21:43,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:21:43,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:21:43,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:44,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:45,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:45,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033443748] [2021-10-07 16:21:45,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033443748] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:45,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:45,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-07 16:21:45,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805691268] [2021-10-07 16:21:45,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:21:45,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:45,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:21:45,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:21:45,698 INFO L87 Difference]: Start difference. First operand 510 states and 1734 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) [2021-10-07 16:21:54,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:54,779 INFO L93 Difference]: Finished difference Result 806 states and 2444 transitions. [2021-10-07 16:21:54,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 16:21:54,781 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 18 [2021-10-07 16:21:54,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:54,786 INFO L225 Difference]: With dead ends: 806 [2021-10-07 16:21:54,786 INFO L226 Difference]: Without dead ends: 788 [2021-10-07 16:21:54,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 7943.4ms TimeCoverageRelationStatistics Valid=667, Invalid=1589, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 16:21:54,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-10-07 16:21:54,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 560. [2021-10-07 16:21:54,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 3.4651162790697674) internal successors, (1937), 559 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:21:54,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1937 transitions. [2021-10-07 16:21:54,809 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1937 transitions. Word has length 18 [2021-10-07 16:21:54,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:54,810 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 1937 transitions. [2021-10-07 16:21:54,810 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) [2021-10-07 16:21:54,810 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1937 transitions. [2021-10-07 16:21:54,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:21:54,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:54,813 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:54,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 16:21:55,026 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 [2021-10-07 16:21:55,026 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)] === [2021-10-07 16:21:55,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:55,027 INFO L82 PathProgramCache]: Analyzing trace with hash -287022991, now seen corresponding path program 22 times [2021-10-07 16:21:55,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:55,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588739352] [2021-10-07 16:21:55,028 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:21:55,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:55,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:55,029 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) [2021-10-07 16:21:55,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 16:21:55,347 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:21:55,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:21:55,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:21:55,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:21:55,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:56,595 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:56,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588739352] [2021-10-07 16:21:56,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588739352] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:56,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:56,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2021-10-07 16:21:56,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431308554] [2021-10-07 16:21:56,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:21:56,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:56,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:21:56,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:21:56,597 INFO L87 Difference]: Start difference. First operand 560 states and 1937 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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) [2021-10-07 16:21:59,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:59,992 INFO L93 Difference]: Finished difference Result 705 states and 2295 transitions. [2021-10-07 16:21:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 16:21:59,993 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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 18 [2021-10-07 16:21:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:59,997 INFO L225 Difference]: With dead ends: 705 [2021-10-07 16:21:59,997 INFO L226 Difference]: Without dead ends: 694 [2021-10-07 16:21:59,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2348.9ms TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:21:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-10-07 16:22:00,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 598. [2021-10-07 16:22:00,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 3.5041876046901175) internal successors, (2092), 597 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 2092 transitions. [2021-10-07 16:22:00,016 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 2092 transitions. Word has length 18 [2021-10-07 16:22:00,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:00,016 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 2092 transitions. [2021-10-07 16:22:00,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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) [2021-10-07 16:22:00,017 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 2092 transitions. [2021-10-07 16:22:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:22:00,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:00,019 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:00,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 16:22:00,232 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 [2021-10-07 16:22:00,232 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)] === [2021-10-07 16:22:00,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:00,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1530569529, now seen corresponding path program 23 times [2021-10-07 16:22:00,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:00,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591387744] [2021-10-07 16:22:00,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:22:00,235 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:00,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:00,236 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) [2021-10-07 16:22:00,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 16:22:00,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:22:00,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:22:00,575 WARN L261 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:22:00,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:01,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:01,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:01,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591387744] [2021-10-07 16:22:01,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591387744] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:01,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:01,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 16:22:01,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206358320] [2021-10-07 16:22:01,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:22:01,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:22:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:22:01,562 INFO L87 Difference]: Start difference. First operand 598 states and 2092 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:22:03,375 INFO L93 Difference]: Finished difference Result 716 states and 2398 transitions. [2021-10-07 16:22:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:22:03,377 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 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 [2021-10-07 16:22:03,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:22:03,382 INFO L225 Difference]: With dead ends: 716 [2021-10-07 16:22:03,383 INFO L226 Difference]: Without dead ends: 710 [2021-10-07 16:22:03,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1490.8ms TimeCoverageRelationStatistics Valid=232, Invalid=418, Unknown=0, NotChecked=0, Total=650 [2021-10-07 16:22:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-10-07 16:22:03,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 634. [2021-10-07 16:22:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 3.5039494470774093) internal successors, (2218), 633 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2218 transitions. [2021-10-07 16:22:03,407 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2218 transitions. Word has length 18 [2021-10-07 16:22:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:03,407 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 2218 transitions. [2021-10-07 16:22:03,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2218 transitions. [2021-10-07 16:22:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:22:03,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:03,412 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:03,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 16:22:03,625 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 [2021-10-07 16:22:03,626 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)] === [2021-10-07 16:22:03,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:03,627 INFO L82 PathProgramCache]: Analyzing trace with hash 186584885, now seen corresponding path program 24 times [2021-10-07 16:22:03,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:03,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560860497] [2021-10-07 16:22:03,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:22:03,628 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:03,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:03,629 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) [2021-10-07 16:22:03,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 16:22:04,013 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:22:04,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:22:04,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:22:04,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:04,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:04,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:04,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560860497] [2021-10-07 16:22:04,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560860497] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:04,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:04,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-07 16:22:04,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492930475] [2021-10-07 16:22:04,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:22:04,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:04,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:22:04,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:22:04,997 INFO L87 Difference]: Start difference. First operand 634 states and 2218 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) [2021-10-07 16:22:09,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:22:09,117 INFO L93 Difference]: Finished difference Result 822 states and 2654 transitions. [2021-10-07 16:22:09,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 16:22:09,118 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 [2021-10-07 16:22:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:22:09,123 INFO L225 Difference]: With dead ends: 822 [2021-10-07 16:22:09,123 INFO L226 Difference]: Without dead ends: 812 [2021-10-07 16:22:09,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 3744.8ms TimeCoverageRelationStatistics Valid=408, Invalid=1232, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 16:22:09,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-07 16:22:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 664. [2021-10-07 16:22:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 3.497737556561086) internal successors, (2319), 663 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 2319 transitions. [2021-10-07 16:22:09,147 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 2319 transitions. Word has length 18 [2021-10-07 16:22:09,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:09,147 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 2319 transitions. [2021-10-07 16:22:09,147 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) [2021-10-07 16:22:09,147 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 2319 transitions. [2021-10-07 16:22:09,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:22:09,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:09,150 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:09,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-07 16:22:09,363 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 [2021-10-07 16:22:09,364 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)] === [2021-10-07 16:22:09,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:09,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1805137245, now seen corresponding path program 25 times [2021-10-07 16:22:09,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:09,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112260459] [2021-10-07 16:22:09,366 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:22:09,366 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:09,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:09,367 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) [2021-10-07 16:22:09,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 16:22:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:22:09,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:22:09,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:10,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:10,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:10,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112260459] [2021-10-07 16:22:10,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112260459] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:10,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:10,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:22:10,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533529599] [2021-10-07 16:22:10,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:22:10,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:10,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:22:10,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:22:10,836 INFO L87 Difference]: Start difference. First operand 664 states and 2319 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2021-10-07 16:22:15,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:22:15,112 INFO L93 Difference]: Finished difference Result 864 states and 2766 transitions. [2021-10-07 16:22:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 16:22:15,113 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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 [2021-10-07 16:22:15,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:22:15,120 INFO L225 Difference]: With dead ends: 864 [2021-10-07 16:22:15,120 INFO L226 Difference]: Without dead ends: 852 [2021-10-07 16:22:15,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 3907.6ms TimeCoverageRelationStatistics Valid=430, Invalid=1130, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:22:15,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-10-07 16:22:15,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 690. [2021-10-07 16:22:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 3.5036284470246732) internal successors, (2414), 689 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2414 transitions. [2021-10-07 16:22:15,148 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2414 transitions. Word has length 18 [2021-10-07 16:22:15,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:15,148 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 2414 transitions. [2021-10-07 16:22:15,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2021-10-07 16:22:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2414 transitions. [2021-10-07 16:22:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:22:15,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:15,152 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:15,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 16:22:15,366 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 [2021-10-07 16:22:15,367 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)] === [2021-10-07 16:22:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:15,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1332507467, now seen corresponding path program 26 times [2021-10-07 16:22:15,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:15,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575469569] [2021-10-07 16:22:15,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:22:15,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:15,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:15,370 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) [2021-10-07 16:22:15,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 16:22:15,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:22:15,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:22:15,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:22:15,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:16,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:17,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:17,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575469569] [2021-10-07 16:22:17,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575469569] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:17,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:17,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-07 16:22:17,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235785253] [2021-10-07 16:22:17,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:22:17,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:17,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:22:17,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:22:17,596 INFO L87 Difference]: Start difference. First operand 690 states and 2414 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) [2021-10-07 16:22:25,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:22:25,183 INFO L93 Difference]: Finished difference Result 980 states and 3094 transitions. [2021-10-07 16:22:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 16:22:25,184 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 18 [2021-10-07 16:22:25,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:22:25,191 INFO L225 Difference]: With dead ends: 980 [2021-10-07 16:22:25,191 INFO L226 Difference]: Without dead ends: 960 [2021-10-07 16:22:25,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 6909.8ms TimeCoverageRelationStatistics Valid=587, Invalid=1393, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:22:25,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-10-07 16:22:25,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 710. [2021-10-07 16:22:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 3.5148095909732016) internal successors, (2492), 709 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2492 transitions. [2021-10-07 16:22:25,220 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2492 transitions. Word has length 18 [2021-10-07 16:22:25,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:25,220 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 2492 transitions. [2021-10-07 16:22:25,220 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) [2021-10-07 16:22:25,220 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2492 transitions. [2021-10-07 16:22:25,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:22:25,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:25,223 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:25,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 16:22:25,437 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 [2021-10-07 16:22:25,438 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)] === [2021-10-07 16:22:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:25,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1304324291, now seen corresponding path program 27 times [2021-10-07 16:22:25,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:25,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824207051] [2021-10-07 16:22:25,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:22:25,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:25,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:25,441 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) [2021-10-07 16:22:25,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 16:22:25,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 16:22:25,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:22:25,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:22:25,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:26,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:26,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:26,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824207051] [2021-10-07 16:22:26,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824207051] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:26,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:26,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-07 16:22:26,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320182582] [2021-10-07 16:22:26,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:22:26,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:22:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:22:26,765 INFO L87 Difference]: Start difference. First operand 710 states and 2492 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) [2021-10-07 16:22:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:22:28,878 INFO L93 Difference]: Finished difference Result 748 states and 2595 transitions. [2021-10-07 16:22:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 16:22:28,879 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 [2021-10-07 16:22:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:22:28,883 INFO L225 Difference]: With dead ends: 748 [2021-10-07 16:22:28,884 INFO L226 Difference]: Without dead ends: 746 [2021-10-07 16:22:28,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2017.9ms TimeCoverageRelationStatistics Valid=297, Invalid=893, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 16:22:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-10-07 16:22:28,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 720. [2021-10-07 16:22:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 3.5173852573018083) internal successors, (2529), 719 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 2529 transitions. [2021-10-07 16:22:28,907 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 2529 transitions. Word has length 18 [2021-10-07 16:22:28,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:28,907 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 2529 transitions. [2021-10-07 16:22:28,908 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) [2021-10-07 16:22:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 2529 transitions. [2021-10-07 16:22:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:22:28,910 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:28,910 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:28,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-07 16:22:29,123 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 [2021-10-07 16:22:29,124 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)] === [2021-10-07 16:22:29,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:29,125 INFO L82 PathProgramCache]: Analyzing trace with hash 412830123, now seen corresponding path program 28 times [2021-10-07 16:22:29,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:29,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586592754] [2021-10-07 16:22:29,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:22:29,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:29,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:29,128 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) [2021-10-07 16:22:29,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 16:22:29,557 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:22:29,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:22:29,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:22:29,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:30,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:30,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:30,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586592754] [2021-10-07 16:22:30,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586592754] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:30,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:30,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-07 16:22:30,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560720490] [2021-10-07 16:22:30,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:22:30,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:30,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:22:30,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:22:30,985 INFO L87 Difference]: Start difference. First operand 720 states and 2529 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) [2021-10-07 16:22:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:22:35,703 INFO L93 Difference]: Finished difference Result 1035 states and 3348 transitions. [2021-10-07 16:22:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 16:22:35,704 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 18 [2021-10-07 16:22:35,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:22:35,710 INFO L225 Difference]: With dead ends: 1035 [2021-10-07 16:22:35,710 INFO L226 Difference]: Without dead ends: 1024 [2021-10-07 16:22:35,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 4277.8ms TimeCoverageRelationStatistics Valid=610, Invalid=1552, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:22:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-10-07 16:22:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 732. [2021-10-07 16:22:35,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 3.511627906976744) internal successors, (2567), 731 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 2567 transitions. [2021-10-07 16:22:35,739 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 2567 transitions. Word has length 18 [2021-10-07 16:22:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:35,739 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 2567 transitions. [2021-10-07 16:22:35,740 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) [2021-10-07 16:22:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 2567 transitions. [2021-10-07 16:22:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:22:35,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:35,743 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:35,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-07 16:22:35,959 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 [2021-10-07 16:22:35,959 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)] === [2021-10-07 16:22:35,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:35,961 INFO L82 PathProgramCache]: Analyzing trace with hash -549998275, now seen corresponding path program 29 times [2021-10-07 16:22:35,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:35,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808544543] [2021-10-07 16:22:35,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:22:35,962 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:35,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:35,963 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) [2021-10-07 16:22:35,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 16:22:36,462 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:22:36,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:22:36,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:22:36,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:37,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:38,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:38,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808544543] [2021-10-07 16:22:38,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808544543] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:38,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:38,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:22:38,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816209966] [2021-10-07 16:22:38,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:22:38,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:38,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:22:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:22:38,083 INFO L87 Difference]: Start difference. First operand 732 states and 2567 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) [2021-10-07 16:22:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:22:43,058 INFO L93 Difference]: Finished difference Result 1082 states and 3410 transitions. [2021-10-07 16:22:43,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 16:22:43,059 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 18 [2021-10-07 16:22:43,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:22:43,067 INFO L225 Difference]: With dead ends: 1082 [2021-10-07 16:22:43,067 INFO L226 Difference]: Without dead ends: 1060 [2021-10-07 16:22:43,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 4523.0ms TimeCoverageRelationStatistics Valid=490, Invalid=1232, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 16:22:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-10-07 16:22:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 738. [2021-10-07 16:22:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 3.5169606512890095) internal successors, (2592), 737 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:43,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 2592 transitions. [2021-10-07 16:22:43,096 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 2592 transitions. Word has length 18 [2021-10-07 16:22:43,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:43,096 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 2592 transitions. [2021-10-07 16:22:43,096 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) [2021-10-07 16:22:43,096 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 2592 transitions. [2021-10-07 16:22:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:22:43,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:43,099 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:43,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 16:22:43,299 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 [2021-10-07 16:22:43,300 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)] === [2021-10-07 16:22:43,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:43,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1425925671, now seen corresponding path program 30 times [2021-10-07 16:22:43,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:43,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396209547] [2021-10-07 16:22:43,302 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:22:43,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:43,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:43,304 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) [2021-10-07 16:22:43,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 16:22:43,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:22:43,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:22:43,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:22:43,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:44,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:22:44,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:44,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396209547] [2021-10-07 16:22:44,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396209547] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:44,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:44,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 17 [2021-10-07 16:22:44,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408634433] [2021-10-07 16:22:44,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 16:22:44,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:44,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 16:22:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:22:44,300 INFO L87 Difference]: Start difference. First operand 738 states and 2592 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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) [2021-10-07 16:22:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:22:45,551 INFO L93 Difference]: Finished difference Result 1063 states and 3478 transitions. [2021-10-07 16:22:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 16:22:45,565 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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 18 [2021-10-07 16:22:45,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:22:45,573 INFO L225 Difference]: With dead ends: 1063 [2021-10-07 16:22:45,573 INFO L226 Difference]: Without dead ends: 1048 [2021-10-07 16:22:45,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 966.6ms TimeCoverageRelationStatistics Valid=307, Invalid=1025, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 16:22:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-10-07 16:22:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 752. [2021-10-07 16:22:45,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 3.5059920106524634) internal successors, (2633), 751 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 2633 transitions. [2021-10-07 16:22:45,601 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 2633 transitions. Word has length 18 [2021-10-07 16:22:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:45,601 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 2633 transitions. [2021-10-07 16:22:45,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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) [2021-10-07 16:22:45,601 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 2633 transitions. [2021-10-07 16:22:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:22:45,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:45,604 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:45,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-07 16:22:45,822 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 [2021-10-07 16:22:45,822 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)] === [2021-10-07 16:22:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:45,823 INFO L82 PathProgramCache]: Analyzing trace with hash 577142875, now seen corresponding path program 31 times [2021-10-07 16:22:45,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:45,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814609299] [2021-10-07 16:22:45,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:22:45,825 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:45,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:45,826 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) [2021-10-07 16:22:45,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 16:22:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:22:46,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:22:46,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:46,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:47,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:47,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814609299] [2021-10-07 16:22:47,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814609299] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:47,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:47,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-07 16:22:47,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424477275] [2021-10-07 16:22:47,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:22:47,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:47,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:22:47,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:22:47,935 INFO L87 Difference]: Start difference. First operand 752 states and 2633 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) [2021-10-07 16:22:52,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:22:52,799 INFO L93 Difference]: Finished difference Result 953 states and 3136 transitions. [2021-10-07 16:22:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 16:22:52,800 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 18 [2021-10-07 16:22:52,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:22:52,815 INFO L225 Difference]: With dead ends: 953 [2021-10-07 16:22:52,816 INFO L226 Difference]: Without dead ends: 946 [2021-10-07 16:22:52,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 4599.4ms TimeCoverageRelationStatistics Valid=383, Invalid=1023, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 16:22:52,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-10-07 16:22:52,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 808. [2021-10-07 16:22:52,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 3.5278810408921935) internal successors, (2847), 807 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:52,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2847 transitions. [2021-10-07 16:22:52,842 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2847 transitions. Word has length 18 [2021-10-07 16:22:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:52,842 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 2847 transitions. [2021-10-07 16:22:52,842 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) [2021-10-07 16:22:52,842 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2847 transitions. [2021-10-07 16:22:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:22:52,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:52,845 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:52,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-07 16:22:53,059 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 [2021-10-07 16:22:53,059 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)] === [2021-10-07 16:22:53,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:53,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2000670007, now seen corresponding path program 32 times [2021-10-07 16:22:53,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:53,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694162639] [2021-10-07 16:22:53,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:22:53,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:53,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:53,062 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) [2021-10-07 16:22:53,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-07 16:22:53,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:22:53,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:22:53,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:22:53,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:53,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:54,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:54,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694162639] [2021-10-07 16:22:54,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694162639] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:54,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:54,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-07 16:22:54,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689428609] [2021-10-07 16:22:54,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:22:54,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:54,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:22:54,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:22:54,713 INFO L87 Difference]: Start difference. First operand 808 states and 2847 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) [2021-10-07 16:23:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:23:02,221 INFO L93 Difference]: Finished difference Result 1128 states and 3629 transitions. [2021-10-07 16:23:02,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-07 16:23:02,222 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 [2021-10-07 16:23:02,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:23:02,225 INFO L225 Difference]: With dead ends: 1128 [2021-10-07 16:23:02,226 INFO L226 Difference]: Without dead ends: 1122 [2021-10-07 16:23:02,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 6744.3ms TimeCoverageRelationStatistics Valid=619, Invalid=1931, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 16:23:02,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-10-07 16:23:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 836. [2021-10-07 16:23:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 3.5365269461077844) internal successors, (2953), 835 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:23:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2953 transitions. [2021-10-07 16:23:02,247 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2953 transitions. Word has length 18 [2021-10-07 16:23:02,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:23:02,247 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 2953 transitions. [2021-10-07 16:23:02,247 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) [2021-10-07 16:23:02,247 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2953 transitions. [2021-10-07 16:23:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:23:02,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:23:02,250 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:23:02,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-10-07 16:23:02,458 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 [2021-10-07 16:23:02,458 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)] === [2021-10-07 16:23:02,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:23:02,459 INFO L82 PathProgramCache]: Analyzing trace with hash -437528907, now seen corresponding path program 33 times [2021-10-07 16:23:02,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:23:02,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714257568] [2021-10-07 16:23:02,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:23:02,460 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:23:02,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:23:02,462 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) [2021-10-07 16:23:02,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-07 16:23:02,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:23:02,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:23:02,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:23:03,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:23:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:23:03,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:23:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:23:04,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:23:04,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714257568] [2021-10-07 16:23:04,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714257568] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:23:04,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:23:04,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-07 16:23:04,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652630966] [2021-10-07 16:23:04,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:23:04,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:23:04,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:23:04,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:23:04,545 INFO L87 Difference]: Start difference. First operand 836 states and 2953 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) [2021-10-07 16:23:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:23:12,298 INFO L93 Difference]: Finished difference Result 1229 states and 3967 transitions. [2021-10-07 16:23:12,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-07 16:23:12,299 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 18 [2021-10-07 16:23:12,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:23:12,304 INFO L225 Difference]: With dead ends: 1229 [2021-10-07 16:23:12,304 INFO L226 Difference]: Without dead ends: 1210 [2021-10-07 16:23:12,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 7270.6ms TimeCoverageRelationStatistics Valid=660, Invalid=2096, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 16:23:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-07 16:23:12,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 864. [2021-10-07 16:23:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.5469293163383546) internal successors, (3061), 863 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:23:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3061 transitions. [2021-10-07 16:23:12,331 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 3061 transitions. Word has length 18 [2021-10-07 16:23:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:23:12,331 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 3061 transitions. [2021-10-07 16:23:12,331 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) [2021-10-07 16:23:12,331 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 3061 transitions. [2021-10-07 16:23:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:23:12,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:23:12,333 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:23:12,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-07 16:23:12,535 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 [2021-10-07 16:23:12,536 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)] === [2021-10-07 16:23:12,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:23:12,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1605205242, now seen corresponding path program 34 times [2021-10-07 16:23:12,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:23:12,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358363562] [2021-10-07 16:23:12,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:23:12,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:23:12,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:23:12,539 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) [2021-10-07 16:23:12,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-07 16:23:13,047 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:23:13,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:23:13,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:23:13,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:23:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:23:13,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:23:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:23:14,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:23:14,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358363562] [2021-10-07 16:23:14,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358363562] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:23:14,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:23:14,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-07 16:23:14,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174299728] [2021-10-07 16:23:14,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:23:14,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:23:14,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:23:14,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:23:14,712 INFO L87 Difference]: Start difference. First operand 864 states and 3061 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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) [2021-10-07 16:23:20,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:23:20,796 INFO L93 Difference]: Finished difference Result 1160 states and 3898 transitions. [2021-10-07 16:23:20,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:23:20,798 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 [2021-10-07 16:23:20,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:23:20,801 INFO L225 Difference]: With dead ends: 1160 [2021-10-07 16:23:20,801 INFO L226 Difference]: Without dead ends: 1160 [2021-10-07 16:23:20,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 5617.0ms TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 16:23:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-10-07 16:23:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 946. [2021-10-07 16:23:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 3.585185185185185) internal successors, (3388), 945 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:23:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 3388 transitions. [2021-10-07 16:23:20,837 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 3388 transitions. Word has length 19 [2021-10-07 16:23:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:23:20,837 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 3388 transitions. [2021-10-07 16:23:20,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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) [2021-10-07 16:23:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 3388 transitions. [2021-10-07 16:23:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:23:20,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:23:20,841 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:23:20,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-10-07 16:23:21,055 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 [2021-10-07 16:23:21,055 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)] === [2021-10-07 16:23:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:23:21,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1977152880, now seen corresponding path program 35 times [2021-10-07 16:23:21,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:23:21,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885497794] [2021-10-07 16:23:21,057 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:23:21,057 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:23:21,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:23:21,058 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) [2021-10-07 16:23:21,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-07 16:23:21,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 16:23:21,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:23:21,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:23:21,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:23:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:23:21,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:23:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:23:23,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:23:23,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885497794] [2021-10-07 16:23:23,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885497794] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:23:23,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:23:23,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2021-10-07 16:23:23,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141478447] [2021-10-07 16:23:23,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:23:23,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:23:23,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:23:23,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:23:23,087 INFO L87 Difference]: Start difference. First operand 946 states and 3388 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) [2021-10-07 16:23:30,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:23:30,978 INFO L93 Difference]: Finished difference Result 1330 states and 4381 transitions. [2021-10-07 16:23:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:23:30,980 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 [2021-10-07 16:23:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:23:30,983 INFO L225 Difference]: With dead ends: 1330 [2021-10-07 16:23:30,984 INFO L226 Difference]: Without dead ends: 1330 [2021-10-07 16:23:30,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 6347.0ms TimeCoverageRelationStatistics Valid=487, Invalid=1153, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 16:23:30,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-07 16:23:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1034. [2021-10-07 16:23:31,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 3.622458857696031) internal successors, (3742), 1033 states have internal predecessors, (3742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:23:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 3742 transitions. [2021-10-07 16:23:31,009 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 3742 transitions. Word has length 19 [2021-10-07 16:23:31,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:23:31,010 INFO L470 AbstractCegarLoop]: Abstraction has 1034 states and 3742 transitions. [2021-10-07 16:23:31,010 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) [2021-10-07 16:23:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 3742 transitions. [2021-10-07 16:23:31,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:23:31,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:23:31,012 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:23:31,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-07 16:23:31,213 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 [2021-10-07 16:23:31,213 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)] === [2021-10-07 16:23:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:23:31,214 INFO L82 PathProgramCache]: Analyzing trace with hash -23563782, now seen corresponding path program 36 times [2021-10-07 16:23:31,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:23:31,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437326659] [2021-10-07 16:23:31,215 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:23:31,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:23:31,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:23:31,217 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) [2021-10-07 16:23:31,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-07 16:23:31,814 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-07 16:23:31,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:23:31,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:23:31,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:23:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:23:32,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:23:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:23:35,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:23:35,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437326659] [2021-10-07 16:23:35,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437326659] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:23:35,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:23:35,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-10-07 16:23:35,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92933315] [2021-10-07 16:23:35,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:23:35,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:23:35,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:23:35,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:23:35,556 INFO L87 Difference]: Start difference. First operand 1034 states and 3742 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) 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) [2021-10-07 16:24:30,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:24:30,730 INFO L93 Difference]: Finished difference Result 1461 states and 4718 transitions. [2021-10-07 16:24:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-07 16:24:30,731 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) 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 19 [2021-10-07 16:24:30,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:24:30,735 INFO L225 Difference]: With dead ends: 1461 [2021-10-07 16:24:30,735 INFO L226 Difference]: Without dead ends: 1446 [2021-10-07 16:24:30,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 53541.2ms TimeCoverageRelationStatistics Valid=1182, Invalid=3374, Unknown=0, NotChecked=0, Total=4556 [2021-10-07 16:24:30,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-10-07 16:24:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1098. [2021-10-07 16:24:30,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 3.6298997265268915) internal successors, (3982), 1097 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:24:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 3982 transitions. [2021-10-07 16:24:30,768 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 3982 transitions. Word has length 19 [2021-10-07 16:24:30,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:24:30,769 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 3982 transitions. [2021-10-07 16:24:30,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) 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) [2021-10-07 16:24:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 3982 transitions. [2021-10-07 16:24:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:24:30,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:24:30,774 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:24:30,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-07 16:24:30,974 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 [2021-10-07 16:24:30,975 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)] === [2021-10-07 16:24:30,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:24:30,975 INFO L82 PathProgramCache]: Analyzing trace with hash -68848500, now seen corresponding path program 37 times [2021-10-07 16:24:30,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:24:30,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541137624] [2021-10-07 16:24:30,976 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:24:30,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:24:30,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:24:30,978 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) [2021-10-07 16:24:30,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-07 16:24:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:24:31,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:24:31,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:24:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:24:32,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:24:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:24:35,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:24:35,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541137624] [2021-10-07 16:24:35,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541137624] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:24:35,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:24:35,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-07 16:24:35,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986349209] [2021-10-07 16:24:35,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:24:35,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:24:35,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:24:35,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:24:35,045 INFO L87 Difference]: Start difference. First operand 1098 states and 3982 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 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) [2021-10-07 16:25:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:25:02,931 INFO L93 Difference]: Finished difference Result 1329 states and 4513 transitions. [2021-10-07 16:25:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:25:02,932 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 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 19 [2021-10-07 16:25:02,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:25:02,936 INFO L225 Difference]: With dead ends: 1329 [2021-10-07 16:25:02,936 INFO L226 Difference]: Without dead ends: 1320 [2021-10-07 16:25:02,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 26354.3ms TimeCoverageRelationStatistics Valid=561, Invalid=1601, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:25:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-10-07 16:25:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1114. [2021-10-07 16:25:02,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.6442048517520216) internal successors, (4056), 1113 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:02,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4056 transitions. [2021-10-07 16:25:02,982 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4056 transitions. Word has length 19 [2021-10-07 16:25:02,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:25:02,982 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 4056 transitions. [2021-10-07 16:25:02,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 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) [2021-10-07 16:25:02,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4056 transitions. [2021-10-07 16:25:02,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:25:02,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:02,986 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:25:03,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-07 16:25:03,200 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 [2021-10-07 16:25:03,201 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)] === [2021-10-07 16:25:03,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:03,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1703717174, now seen corresponding path program 38 times [2021-10-07 16:25:03,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:03,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336913004] [2021-10-07 16:25:03,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:25:03,203 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:03,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:03,205 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) [2021-10-07 16:25:03,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-07 16:25:03,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:25:03,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:25:03,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:25:03,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:25:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:04,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:25:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:06,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:25:06,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336913004] [2021-10-07 16:25:06,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336913004] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:25:06,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:25:06,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:25:06,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769901116] [2021-10-07 16:25:06,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:25:06,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:25:06,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:25:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:25:06,077 INFO L87 Difference]: Start difference. First operand 1114 states and 4056 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2021-10-07 16:25:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:25:21,695 INFO L93 Difference]: Finished difference Result 1460 states and 4830 transitions. [2021-10-07 16:25:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-07 16:25:21,696 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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 [2021-10-07 16:25:21,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:25:21,703 INFO L225 Difference]: With dead ends: 1460 [2021-10-07 16:25:21,703 INFO L226 Difference]: Without dead ends: 1452 [2021-10-07 16:25:21,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 14581.9ms TimeCoverageRelationStatistics Valid=925, Invalid=2381, Unknown=0, NotChecked=0, Total=3306 [2021-10-07 16:25:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-10-07 16:25:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1142. [2021-10-07 16:25:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.633654688869413) internal successors, (4146), 1141 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4146 transitions. [2021-10-07 16:25:21,744 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4146 transitions. Word has length 19 [2021-10-07 16:25:21,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:25:21,745 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 4146 transitions. [2021-10-07 16:25:21,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2021-10-07 16:25:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4146 transitions. [2021-10-07 16:25:21,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:25:21,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:21,749 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:25:21,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-07 16:25:21,962 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 [2021-10-07 16:25:21,963 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)] === [2021-10-07 16:25:21,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:21,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1432238368, now seen corresponding path program 39 times [2021-10-07 16:25:21,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:21,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627573312] [2021-10-07 16:25:21,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:25:21,965 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:21,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:21,966 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) [2021-10-07 16:25:22,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-07 16:25:22,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-07 16:25:22,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:25:22,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:25:22,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:25:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:25:23,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:25:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:25,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:25:25,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627573312] [2021-10-07 16:25:25,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627573312] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:25:25,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:25:25,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2021-10-07 16:25:25,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269629376] [2021-10-07 16:25:25,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:25:25,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:25:25,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:25:25,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:25:25,310 INFO L87 Difference]: Start difference. First operand 1142 states and 4146 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 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) [2021-10-07 16:25:37,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:25:37,954 INFO L93 Difference]: Finished difference Result 1325 states and 4534 transitions. [2021-10-07 16:25:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:25:37,955 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 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 19 [2021-10-07 16:25:37,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:25:37,963 INFO L225 Difference]: With dead ends: 1325 [2021-10-07 16:25:37,963 INFO L226 Difference]: Without dead ends: 1320 [2021-10-07 16:25:37,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 9990.0ms TimeCoverageRelationStatistics Valid=613, Invalid=1549, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:25:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-10-07 16:25:37,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1162. [2021-10-07 16:25:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 3.6382428940568476) internal successors, (4224), 1161 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 4224 transitions. [2021-10-07 16:25:38,001 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 4224 transitions. Word has length 19 [2021-10-07 16:25:38,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:25:38,002 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 4224 transitions. [2021-10-07 16:25:38,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 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) [2021-10-07 16:25:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 4224 transitions. [2021-10-07 16:25:38,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:25:38,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:38,006 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:25:38,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-07 16:25:38,220 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 [2021-10-07 16:25:38,220 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)] === [2021-10-07 16:25:38,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:38,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1955625568, now seen corresponding path program 40 times [2021-10-07 16:25:38,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:38,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983278431] [2021-10-07 16:25:38,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:25:38,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:38,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:38,224 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) [2021-10-07 16:25:38,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-07 16:25:38,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:25:38,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:25:38,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:25:38,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:25:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:39,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:25:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:39,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:25:39,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983278431] [2021-10-07 16:25:39,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983278431] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:25:39,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:25:39,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 16:25:39,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936864393] [2021-10-07 16:25:39,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:25:39,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:25:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:25:39,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:25:39,890 INFO L87 Difference]: Start difference. First operand 1162 states and 4224 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:25:42,326 INFO L93 Difference]: Finished difference Result 1566 states and 5407 transitions. [2021-10-07 16:25:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:25:42,327 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2021-10-07 16:25:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:25:42,333 INFO L225 Difference]: With dead ends: 1566 [2021-10-07 16:25:42,333 INFO L226 Difference]: Without dead ends: 1531 [2021-10-07 16:25:42,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 505.8ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:25:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-10-07 16:25:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1250. [2021-10-07 16:25:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.625300240192154) internal successors, (4528), 1249 states have internal predecessors, (4528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:42,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4528 transitions. [2021-10-07 16:25:42,397 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4528 transitions. Word has length 19 [2021-10-07 16:25:42,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:25:42,398 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 4528 transitions. [2021-10-07 16:25:42,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4528 transitions. [2021-10-07 16:25:42,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:25:42,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:42,403 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:25:42,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-07 16:25:42,617 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 [2021-10-07 16:25:42,617 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)] === [2021-10-07 16:25:42,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:42,618 INFO L82 PathProgramCache]: Analyzing trace with hash 809345228, now seen corresponding path program 41 times [2021-10-07 16:25:42,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:42,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062599410] [2021-10-07 16:25:42,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:25:42,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:42,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:42,620 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) [2021-10-07 16:25:42,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-07 16:25:43,285 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:25:43,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:25:43,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:25:43,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:25:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:44,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:25:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:45,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:25:45,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062599410] [2021-10-07 16:25:45,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062599410] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:25:45,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:25:45,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2021-10-07 16:25:45,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761264507] [2021-10-07 16:25:45,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:25:45,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:25:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:25:45,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:25:45,628 INFO L87 Difference]: Start difference. First operand 1250 states and 4528 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-10-07 16:25:55,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:25:55,808 INFO L93 Difference]: Finished difference Result 1588 states and 5343 transitions. [2021-10-07 16:25:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 16:25:55,810 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 19 [2021-10-07 16:25:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:25:55,813 INFO L225 Difference]: With dead ends: 1588 [2021-10-07 16:25:55,813 INFO L226 Difference]: Without dead ends: 1554 [2021-10-07 16:25:55,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 8485.1ms TimeCoverageRelationStatistics Valid=538, Invalid=1184, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 16:25:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-10-07 16:25:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1298. [2021-10-07 16:25:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.6268311488049343) internal successors, (4704), 1297 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 4704 transitions. [2021-10-07 16:25:55,842 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 4704 transitions. Word has length 19 [2021-10-07 16:25:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:25:55,842 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 4704 transitions. [2021-10-07 16:25:55,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-10-07 16:25:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 4704 transitions. [2021-10-07 16:25:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:25:55,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:55,846 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:25:55,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-07 16:25:56,046 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 [2021-10-07 16:25:56,047 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)] === [2021-10-07 16:25:56,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:56,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2022079072, now seen corresponding path program 42 times [2021-10-07 16:25:56,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:56,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91669012] [2021-10-07 16:25:56,049 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:25:56,050 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:56,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:56,050 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) [2021-10-07 16:25:56,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-07 16:25:56,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:25:56,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:25:56,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:25:56,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:25:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:57,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:25:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:58,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:25:58,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91669012] [2021-10-07 16:25:58,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91669012] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:25:58,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:25:58,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 16:25:58,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381040007] [2021-10-07 16:25:58,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:25:58,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:25:58,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:25:58,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:25:58,230 INFO L87 Difference]: Start difference. First operand 1298 states and 4704 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-10-07 16:26:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:09,067 INFO L93 Difference]: Finished difference Result 1619 states and 5443 transitions. [2021-10-07 16:26:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-07 16:26:09,068 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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 19 [2021-10-07 16:26:09,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:09,073 INFO L225 Difference]: With dead ends: 1619 [2021-10-07 16:26:09,073 INFO L226 Difference]: Without dead ends: 1614 [2021-10-07 16:26:09,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 9040.7ms TimeCoverageRelationStatistics Valid=756, Invalid=2436, Unknown=0, NotChecked=0, Total=3192 [2021-10-07 16:26:09,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-10-07 16:26:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1370. [2021-10-07 16:26:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.643535427319211) internal successors, (4988), 1369 states have internal predecessors, (4988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4988 transitions. [2021-10-07 16:26:09,103 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4988 transitions. Word has length 19 [2021-10-07 16:26:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:09,103 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 4988 transitions. [2021-10-07 16:26:09,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-10-07 16:26:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4988 transitions. [2021-10-07 16:26:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:26:09,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:09,107 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:26:09,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:09,308 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 [2021-10-07 16:26:09,308 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)] === [2021-10-07 16:26:09,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:09,309 INFO L82 PathProgramCache]: Analyzing trace with hash 47286910, now seen corresponding path program 43 times [2021-10-07 16:26:09,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:09,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975456416] [2021-10-07 16:26:09,310 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:26:09,310 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:09,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:09,311 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) [2021-10-07 16:26:09,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-07 16:26:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:10,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:26:10,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:10,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:13,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:13,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975456416] [2021-10-07 16:26:13,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975456416] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:26:13,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:26:13,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2021-10-07 16:26:13,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261377007] [2021-10-07 16:26:13,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:26:13,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:13,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:26:13,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:26:13,204 INFO L87 Difference]: Start difference. First operand 1370 states and 4988 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 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) [2021-10-07 16:26:46,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:46,560 INFO L93 Difference]: Finished difference Result 1841 states and 6166 transitions. [2021-10-07 16:26:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-07 16:26:46,561 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 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 19 [2021-10-07 16:26:46,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:46,565 INFO L225 Difference]: With dead ends: 1841 [2021-10-07 16:26:46,566 INFO L226 Difference]: Without dead ends: 1828 [2021-10-07 16:26:46,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 32082.6ms TimeCoverageRelationStatistics Valid=1002, Invalid=3288, Unknown=0, NotChecked=0, Total=4290 [2021-10-07 16:26:46,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-10-07 16:26:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1396. [2021-10-07 16:26:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 3.65089605734767) internal successors, (5093), 1395 states have internal predecessors, (5093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 5093 transitions. [2021-10-07 16:26:46,599 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 5093 transitions. Word has length 19 [2021-10-07 16:26:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:46,599 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 5093 transitions. [2021-10-07 16:26:46,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 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) [2021-10-07 16:26:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 5093 transitions. [2021-10-07 16:26:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:26:46,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:46,603 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:26:46,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:46,804 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 [2021-10-07 16:26:46,804 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)] === [2021-10-07 16:26:46,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:46,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1774567866, now seen corresponding path program 44 times [2021-10-07 16:26:46,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:46,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002195188] [2021-10-07 16:26:46,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:26:46,806 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:46,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:46,807 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) [2021-10-07 16:26:46,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-07 16:26:47,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:26:47,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:26:47,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:26:47,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:48,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:49,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:49,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002195188] [2021-10-07 16:26:49,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002195188] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:26:49,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:26:49,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:26:49,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262757449] [2021-10-07 16:26:49,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:26:49,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:49,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:26:49,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:26:49,667 INFO L87 Difference]: Start difference. First operand 1396 states and 5093 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2021-10-07 16:27:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:27:04,055 INFO L93 Difference]: Finished difference Result 1732 states and 5848 transitions. [2021-10-07 16:27:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-07 16:27:04,056 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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 [2021-10-07 16:27:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:27:04,060 INFO L225 Difference]: With dead ends: 1732 [2021-10-07 16:27:04,060 INFO L226 Difference]: Without dead ends: 1724 [2021-10-07 16:27:04,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 13486.7ms TimeCoverageRelationStatistics Valid=957, Invalid=2465, Unknown=0, NotChecked=0, Total=3422 [2021-10-07 16:27:04,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2021-10-07 16:27:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1412. [2021-10-07 16:27:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.6392629340892984) internal successors, (5135), 1411 states have internal predecessors, (5135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:27:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5135 transitions. [2021-10-07 16:27:04,092 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5135 transitions. Word has length 19 [2021-10-07 16:27:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:27:04,092 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 5135 transitions. [2021-10-07 16:27:04,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2021-10-07 16:27:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5135 transitions. [2021-10-07 16:27:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:27:04,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:27:04,096 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:27:04,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-07 16:27:04,296 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 [2021-10-07 16:27:04,297 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)] === [2021-10-07 16:27:04,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:27:04,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1503089060, now seen corresponding path program 45 times [2021-10-07 16:27:04,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:27:04,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447746913] [2021-10-07 16:27:04,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:27:04,299 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:27:04,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:27:04,301 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) [2021-10-07 16:27:04,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-07 16:27:05,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-07 16:27:05,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:27:05,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:27:05,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:27:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:27:05,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:27:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:06,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:27:06,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447746913] [2021-10-07 16:27:06,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447746913] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:27:06,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:27:06,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-07 16:27:06,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703624938] [2021-10-07 16:27:06,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:27:06,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:27:06,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:27:06,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:27:06,966 INFO L87 Difference]: Start difference. First operand 1412 states and 5135 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 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) [2021-10-07 16:27:10,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:27:10,461 INFO L93 Difference]: Finished difference Result 1528 states and 5400 transitions. [2021-10-07 16:27:10,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 16:27:10,462 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 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 [2021-10-07 16:27:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:27:10,468 INFO L225 Difference]: With dead ends: 1528 [2021-10-07 16:27:10,468 INFO L226 Difference]: Without dead ends: 1528 [2021-10-07 16:27:10,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3011.9ms TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 16:27:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-10-07 16:27:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1418. [2021-10-07 16:27:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 3.6386732533521524) internal successors, (5156), 1417 states have internal predecessors, (5156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:27:10,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5156 transitions. [2021-10-07 16:27:10,514 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5156 transitions. Word has length 19 [2021-10-07 16:27:10,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:27:10,514 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 5156 transitions. [2021-10-07 16:27:10,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 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) [2021-10-07 16:27:10,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5156 transitions. [2021-10-07 16:27:10,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:27:10,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:27:10,519 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:27:10,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-07 16:27:10,733 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 [2021-10-07 16:27:10,734 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)] === [2021-10-07 16:27:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:27:10,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1019312562, now seen corresponding path program 46 times [2021-10-07 16:27:10,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:27:10,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071228069] [2021-10-07 16:27:10,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:27:10,736 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:27:10,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:27:10,737 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) [2021-10-07 16:27:10,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-07 16:27:11,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:27:11,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:27:11,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:27:11,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:27:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:12,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:27:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:14,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:27:14,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071228069] [2021-10-07 16:27:14,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071228069] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:27:14,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:27:14,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 16:27:14,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128511492] [2021-10-07 16:27:14,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:27:14,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:27:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:27:14,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:27:14,100 INFO L87 Difference]: Start difference. First operand 1418 states and 5156 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 22 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) [2021-10-07 16:27:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:27:29,005 INFO L93 Difference]: Finished difference Result 1765 states and 6006 transitions. [2021-10-07 16:27:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:27:29,006 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 22 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 19 [2021-10-07 16:27:29,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:27:29,010 INFO L225 Difference]: With dead ends: 1765 [2021-10-07 16:27:29,010 INFO L226 Difference]: Without dead ends: 1752 [2021-10-07 16:27:29,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 11737.7ms TimeCoverageRelationStatistics Valid=845, Invalid=2125, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 16:27:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2021-10-07 16:27:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1438. [2021-10-07 16:27:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 3.6339596381350034) internal successors, (5222), 1437 states have internal predecessors, (5222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:27:29,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 5222 transitions. [2021-10-07 16:27:29,040 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 5222 transitions. Word has length 19 [2021-10-07 16:27:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:27:29,040 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 5222 transitions. [2021-10-07 16:27:29,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 22 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) [2021-10-07 16:27:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 5222 transitions. [2021-10-07 16:27:29,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:27:29,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:27:29,044 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:27:29,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-07 16:27:29,245 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 [2021-10-07 16:27:29,245 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)] === [2021-10-07 16:27:29,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:27:29,246 INFO L82 PathProgramCache]: Analyzing trace with hash -641228338, now seen corresponding path program 47 times [2021-10-07 16:27:29,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:27:29,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877670246] [2021-10-07 16:27:29,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:27:29,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:27:29,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:27:29,249 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) [2021-10-07 16:27:29,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-07 16:27:30,111 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:27:30,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:27:30,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:27:30,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:27:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:30,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:27:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:32,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:27:32,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877670246] [2021-10-07 16:27:32,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877670246] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:27:32,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:27:32,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2021-10-07 16:27:32,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130764201] [2021-10-07 16:27:32,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:27:32,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:27:32,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:27:32,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:27:32,173 INFO L87 Difference]: Start difference. First operand 1438 states and 5222 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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) [2021-10-07 16:27:38,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:27:38,417 INFO L93 Difference]: Finished difference Result 1675 states and 5796 transitions. [2021-10-07 16:27:38,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 16:27:38,418 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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 [2021-10-07 16:27:38,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:27:38,422 INFO L225 Difference]: With dead ends: 1675 [2021-10-07 16:27:38,422 INFO L226 Difference]: Without dead ends: 1644 [2021-10-07 16:27:38,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 5718.8ms TimeCoverageRelationStatistics Valid=317, Invalid=1089, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 16:27:38,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-10-07 16:27:38,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1492. [2021-10-07 16:27:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1491 states have (on average 3.625083836351442) internal successors, (5405), 1491 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:27:38,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5405 transitions. [2021-10-07 16:27:38,484 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5405 transitions. Word has length 19 [2021-10-07 16:27:38,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:27:38,485 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 5405 transitions. [2021-10-07 16:27:38,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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) [2021-10-07 16:27:38,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5405 transitions. [2021-10-07 16:27:38,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:27:38,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:27:38,491 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:27:38,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-07 16:27:38,704 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 [2021-10-07 16:27:38,705 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)] === [2021-10-07 16:27:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:27:38,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1882912558, now seen corresponding path program 48 times [2021-10-07 16:27:38,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:27:38,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146969205] [2021-10-07 16:27:38,706 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:27:38,707 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:27:38,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:27:38,708 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) [2021-10-07 16:27:38,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-07 16:27:39,589 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:27:39,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:27:39,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:27:39,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:27:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:40,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:27:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:40,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:27:40,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146969205] [2021-10-07 16:27:40,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146969205] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:27:40,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:27:40,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:27:40,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380533308] [2021-10-07 16:27:40,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:27:40,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:27:40,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:27:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:27:40,820 INFO L87 Difference]: Start difference. First operand 1492 states and 5405 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-07 16:27:47,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:27:47,483 INFO L93 Difference]: Finished difference Result 1880 states and 6302 transitions. [2021-10-07 16:27:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:27:47,485 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 [2021-10-07 16:27:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:27:47,490 INFO L225 Difference]: With dead ends: 1880 [2021-10-07 16:27:47,490 INFO L226 Difference]: Without dead ends: 1868 [2021-10-07 16:27:47,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 5986.0ms TimeCoverageRelationStatistics Valid=681, Invalid=2181, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 16:27:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-10-07 16:27:47,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1552. [2021-10-07 16:27:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1551 states have (on average 3.6266924564796907) internal successors, (5625), 1551 states have internal predecessors, (5625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:27:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 5625 transitions. [2021-10-07 16:27:47,522 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 5625 transitions. Word has length 19 [2021-10-07 16:27:47,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:27:47,522 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 5625 transitions. [2021-10-07 16:27:47,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-07 16:27:47,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 5625 transitions. [2021-10-07 16:27:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:27:47,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:27:47,526 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:27:47,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-07 16:27:47,726 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 [2021-10-07 16:27:47,727 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)] === [2021-10-07 16:27:47,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:27:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2035689902, now seen corresponding path program 49 times [2021-10-07 16:27:47,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:27:47,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810463958] [2021-10-07 16:27:47,729 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:27:47,729 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:27:47,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:27:47,730 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) [2021-10-07 16:27:47,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-07 16:27:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:27:48,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:27:48,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:27:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:49,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:27:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:27:49,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:27:49,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810463958] [2021-10-07 16:27:49,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810463958] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:27:49,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:27:49,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2021-10-07 16:27:49,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515272566] [2021-10-07 16:27:49,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:27:49,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:27:49,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:27:49,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:27:49,712 INFO L87 Difference]: Start difference. First operand 1552 states and 5625 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) [2021-10-07 16:27:54,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:27:54,278 INFO L93 Difference]: Finished difference Result 1802 states and 6215 transitions. [2021-10-07 16:27:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-07 16:27:54,279 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 19 [2021-10-07 16:27:54,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:27:54,283 INFO L225 Difference]: With dead ends: 1802 [2021-10-07 16:27:54,284 INFO L226 Difference]: Without dead ends: 1794 [2021-10-07 16:27:54,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 4021.6ms TimeCoverageRelationStatistics Valid=557, Invalid=1893, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 16:27:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2021-10-07 16:27:54,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1572. [2021-10-07 16:27:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1571 states have (on average 3.622533418204965) internal successors, (5691), 1571 states have internal predecessors, (5691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:27:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 5691 transitions. [2021-10-07 16:27:54,317 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 5691 transitions. Word has length 19 [2021-10-07 16:27:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:27:54,317 INFO L470 AbstractCegarLoop]: Abstraction has 1572 states and 5691 transitions. [2021-10-07 16:27:54,317 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) [2021-10-07 16:27:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 5691 transitions. [2021-10-07 16:27:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:27:54,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:27:54,321 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:27:54,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-07 16:27:54,521 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 [2021-10-07 16:27:54,522 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)] === [2021-10-07 16:27:54,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:27:54,523 INFO L82 PathProgramCache]: Analyzing trace with hash 516597550, now seen corresponding path program 50 times [2021-10-07 16:27:54,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:27:54,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686761486] [2021-10-07 16:27:54,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:27:54,524 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:27:54,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:27:54,525 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) [2021-10-07 16:27:54,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-07 16:27:55,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:27:55,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:27:55,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:27:55,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:27:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:55,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:27:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:56,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:27:56,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686761486] [2021-10-07 16:27:56,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686761486] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:27:56,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:27:56,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 16:27:56,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5120976] [2021-10-07 16:27:56,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:27:56,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:27:56,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:27:56,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:27:56,688 INFO L87 Difference]: Start difference. First operand 1572 states and 5691 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-10-07 16:28:00,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:00,788 INFO L93 Difference]: Finished difference Result 1793 states and 6156 transitions. [2021-10-07 16:28:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 16:28:00,789 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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 19 [2021-10-07 16:28:00,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:00,795 INFO L225 Difference]: With dead ends: 1793 [2021-10-07 16:28:00,795 INFO L226 Difference]: Without dead ends: 1788 [2021-10-07 16:28:00,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 3141.9ms TimeCoverageRelationStatistics Valid=409, Invalid=1483, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 16:28:00,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2021-10-07 16:28:00,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1592. [2021-10-07 16:28:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1591 states have (on average 3.629792583280955) internal successors, (5775), 1591 states have internal predecessors, (5775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:00,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 5775 transitions. [2021-10-07 16:28:00,843 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 5775 transitions. Word has length 19 [2021-10-07 16:28:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:00,843 INFO L470 AbstractCegarLoop]: Abstraction has 1592 states and 5775 transitions. [2021-10-07 16:28:00,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-10-07 16:28:00,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 5775 transitions. [2021-10-07 16:28:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:28:00,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:00,849 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:00,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-07 16:28:01,064 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 [2021-10-07 16:28:01,064 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)] === [2021-10-07 16:28:01,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:01,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2033032156, now seen corresponding path program 51 times [2021-10-07 16:28:01,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:01,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32720826] [2021-10-07 16:28:01,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:28:01,068 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:01,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:01,069 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) [2021-10-07 16:28:01,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-07 16:28:02,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 16:28:02,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:28:02,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:28:02,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:02,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:03,290 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:03,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32720826] [2021-10-07 16:28:03,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32720826] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:28:03,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:28:03,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:28:03,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576345547] [2021-10-07 16:28:03,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:28:03,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:03,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:28:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:28:03,292 INFO L87 Difference]: Start difference. First operand 1592 states and 5775 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-07 16:28:08,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:08,759 INFO L93 Difference]: Finished difference Result 1892 states and 6484 transitions. [2021-10-07 16:28:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-07 16:28:08,760 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 [2021-10-07 16:28:08,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:08,764 INFO L225 Difference]: With dead ends: 1892 [2021-10-07 16:28:08,765 INFO L226 Difference]: Without dead ends: 1884 [2021-10-07 16:28:08,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 5004.9ms TimeCoverageRelationStatistics Valid=631, Invalid=2231, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 16:28:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-10-07 16:28:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1608. [2021-10-07 16:28:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1607 states have (on average 3.624766645924082) internal successors, (5825), 1607 states have internal predecessors, (5825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 5825 transitions. [2021-10-07 16:28:08,799 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 5825 transitions. Word has length 19 [2021-10-07 16:28:08,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:08,799 INFO L470 AbstractCegarLoop]: Abstraction has 1608 states and 5825 transitions. [2021-10-07 16:28:08,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-07 16:28:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 5825 transitions. [2021-10-07 16:28:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:28:08,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:08,803 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:08,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-07 16:28:09,004 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 [2021-10-07 16:28:09,004 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)] === [2021-10-07 16:28:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:09,005 INFO L82 PathProgramCache]: Analyzing trace with hash 687431528, now seen corresponding path program 52 times [2021-10-07 16:28:09,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:09,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631917896] [2021-10-07 16:28:09,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:28:09,006 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:09,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:09,007 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) [2021-10-07 16:28:09,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-07 16:28:09,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:28:09,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:28:09,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:28:09,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:10,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:28:11,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:11,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631917896] [2021-10-07 16:28:11,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631917896] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:28:11,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:28:11,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-07 16:28:11,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27063755] [2021-10-07 16:28:11,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:28:11,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:28:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:28:11,048 INFO L87 Difference]: Start difference. First operand 1608 states and 5825 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 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) [2021-10-07 16:28:16,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:16,531 INFO L93 Difference]: Finished difference Result 1895 states and 6449 transitions. [2021-10-07 16:28:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:28:16,532 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 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 19 [2021-10-07 16:28:16,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:16,536 INFO L225 Difference]: With dead ends: 1895 [2021-10-07 16:28:16,536 INFO L226 Difference]: Without dead ends: 1888 [2021-10-07 16:28:16,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 4962.1ms TimeCoverageRelationStatistics Valid=582, Invalid=2280, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 16:28:16,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2021-10-07 16:28:16,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1632. [2021-10-07 16:28:16,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 3.6253832004904964) internal successors, (5913), 1631 states have internal predecessors, (5913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:16,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5913 transitions. [2021-10-07 16:28:16,589 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 5913 transitions. Word has length 19 [2021-10-07 16:28:16,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:16,590 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 5913 transitions. [2021-10-07 16:28:16,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 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) [2021-10-07 16:28:16,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 5913 transitions. [2021-10-07 16:28:16,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:28:16,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:16,594 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:16,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-07 16:28:16,794 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 [2021-10-07 16:28:16,795 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)] === [2021-10-07 16:28:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:16,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1763485384, now seen corresponding path program 53 times [2021-10-07 16:28:16,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:16,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531876625] [2021-10-07 16:28:16,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:28:16,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:16,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:16,798 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) [2021-10-07 16:28:16,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-07 16:28:17,693 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 16:28:17,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:28:17,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:28:17,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:18,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:19,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:19,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531876625] [2021-10-07 16:28:19,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531876625] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:28:19,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:28:19,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:28:19,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491905836] [2021-10-07 16:28:19,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:28:19,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:28:19,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:28:19,175 INFO L87 Difference]: Start difference. First operand 1632 states and 5913 transitions. Second operand has 20 states, 20 states have (on average 1.65) 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) [2021-10-07 16:28:24,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:24,458 INFO L93 Difference]: Finished difference Result 1964 states and 6597 transitions. [2021-10-07 16:28:24,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 16:28:24,459 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) 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 [2021-10-07 16:28:24,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:24,464 INFO L225 Difference]: With dead ends: 1964 [2021-10-07 16:28:24,465 INFO L226 Difference]: Without dead ends: 1956 [2021-10-07 16:28:24,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 4902.5ms TimeCoverageRelationStatistics Valid=459, Invalid=1703, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:28:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-10-07 16:28:24,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1634. [2021-10-07 16:28:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.5713410900183713) internal successors, (5832), 1633 states have internal predecessors, (5832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5832 transitions. [2021-10-07 16:28:24,504 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5832 transitions. Word has length 19 [2021-10-07 16:28:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:24,504 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5832 transitions. [2021-10-07 16:28:24,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) 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) [2021-10-07 16:28:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5832 transitions. [2021-10-07 16:28:24,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:28:24,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:24,508 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:24,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-07 16:28:24,709 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 [2021-10-07 16:28:24,709 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)] === [2021-10-07 16:28:24,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:24,710 INFO L82 PathProgramCache]: Analyzing trace with hash 961861994, now seen corresponding path program 54 times [2021-10-07 16:28:24,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:24,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818568325] [2021-10-07 16:28:24,711 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:28:24,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:24,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:24,712 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) [2021-10-07 16:28:24,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-07 16:28:25,687 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-07 16:28:25,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:28:25,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:28:25,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:26,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:35,749 WARN L207 SmtUtils]: Spent 6.49 s on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2021-10-07 16:28:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:36,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:36,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818568325] [2021-10-07 16:28:36,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818568325] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:28:36,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:28:36,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-10-07 16:28:36,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541836482] [2021-10-07 16:28:36,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:28:36,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:36,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:28:36,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:28:36,037 INFO L87 Difference]: Start difference. First operand 1634 states and 5832 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) 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) [2021-10-07 16:28:55,898 WARN L207 SmtUtils]: Spent 10.82 s on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2021-10-07 16:29:15,392 WARN L207 SmtUtils]: Spent 11.76 s on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-10-07 16:29:44,021 WARN L207 SmtUtils]: Spent 6.31 s on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2021-10-07 16:29:52,603 WARN L207 SmtUtils]: Spent 8.27 s on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2021-10-07 16:30:02,048 WARN L207 SmtUtils]: Spent 9.14 s on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2021-10-07 16:30:08,299 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 74 [2021-10-07 16:30:12,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:12,215 INFO L93 Difference]: Finished difference Result 2089 states and 6879 transitions. [2021-10-07 16:30:12,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-07 16:30:12,217 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) 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 19 [2021-10-07 16:30:12,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:12,221 INFO L225 Difference]: With dead ends: 2089 [2021-10-07 16:30:12,221 INFO L226 Difference]: Without dead ends: 2076 [2021-10-07 16:30:12,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 101176.6ms TimeCoverageRelationStatistics Valid=845, Invalid=2695, Unknown=0, NotChecked=0, Total=3540 [2021-10-07 16:30:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2021-10-07 16:30:12,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1680. [2021-10-07 16:30:12,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1679 states have (on average 3.571768910065515) internal successors, (5997), 1679 states have internal predecessors, (5997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 5997 transitions. [2021-10-07 16:30:12,264 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 5997 transitions. Word has length 19 [2021-10-07 16:30:12,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:12,265 INFO L470 AbstractCegarLoop]: Abstraction has 1680 states and 5997 transitions. [2021-10-07 16:30:12,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) 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) [2021-10-07 16:30:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 5997 transitions. [2021-10-07 16:30:12,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:30:12,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:12,271 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:12,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:12,485 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 [2021-10-07 16:30:12,486 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)] === [2021-10-07 16:30:12,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:12,487 INFO L82 PathProgramCache]: Analyzing trace with hash -592011968, now seen corresponding path program 55 times [2021-10-07 16:30:12,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:12,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064651903] [2021-10-07 16:30:12,488 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:30:12,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:12,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:12,490 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) [2021-10-07 16:30:12,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-07 16:30:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:30:13,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 16:30:13,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:30:13,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:16,589 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:16,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064651903] [2021-10-07 16:30:16,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064651903] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:16,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:16,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2021-10-07 16:30:16,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249099474] [2021-10-07 16:30:16,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:30:16,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:16,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:30:16,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:30:16,591 INFO L87 Difference]: Start difference. First operand 1680 states and 5997 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-10-07 16:30:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:31,447 INFO L93 Difference]: Finished difference Result 1807 states and 6258 transitions. [2021-10-07 16:30:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 16:30:31,448 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 19 [2021-10-07 16:30:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:31,462 INFO L225 Difference]: With dead ends: 1807 [2021-10-07 16:30:31,462 INFO L226 Difference]: Without dead ends: 1800 [2021-10-07 16:30:31,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 14258.2ms TimeCoverageRelationStatistics Valid=293, Invalid=763, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 16:30:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2021-10-07 16:30:31,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1704. [2021-10-07 16:30:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 3.567234292425132) internal successors, (6075), 1703 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 6075 transitions. [2021-10-07 16:30:31,495 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 6075 transitions. Word has length 19 [2021-10-07 16:30:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:31,496 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 6075 transitions. [2021-10-07 16:30:31,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-10-07 16:30:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 6075 transitions. [2021-10-07 16:30:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:30:31,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:31,500 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:31,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2021-10-07 16:30:31,701 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 [2021-10-07 16:30:31,701 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)] === [2021-10-07 16:30:31,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:31,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1440239792, now seen corresponding path program 56 times [2021-10-07 16:30:31,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:31,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081021534] [2021-10-07 16:30:31,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:30:31,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:31,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:31,705 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) [2021-10-07 16:30:31,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-07 16:30:32,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:30:32,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:32,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:30:32,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:33,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:34,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:34,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081021534] [2021-10-07 16:30:34,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081021534] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:34,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:34,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 16:30:34,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234574179] [2021-10-07 16:30:34,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:30:34,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:34,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:30:34,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:30:34,764 INFO L87 Difference]: Start difference. First operand 1704 states and 6075 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-10-07 16:30:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:45,151 INFO L93 Difference]: Finished difference Result 2239 states and 7550 transitions. [2021-10-07 16:30:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-07 16:30:45,153 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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 19 [2021-10-07 16:30:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:45,159 INFO L225 Difference]: With dead ends: 2239 [2021-10-07 16:30:45,159 INFO L226 Difference]: Without dead ends: 2214 [2021-10-07 16:30:45,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 9391.4ms TimeCoverageRelationStatistics Valid=970, Invalid=2570, Unknown=0, NotChecked=0, Total=3540 [2021-10-07 16:30:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2021-10-07 16:30:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1830. [2021-10-07 16:30:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1829 states have (on average 3.574630945872061) internal successors, (6538), 1829 states have internal predecessors, (6538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 6538 transitions. [2021-10-07 16:30:45,211 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 6538 transitions. Word has length 19 [2021-10-07 16:30:45,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:45,211 INFO L470 AbstractCegarLoop]: Abstraction has 1830 states and 6538 transitions. [2021-10-07 16:30:45,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-10-07 16:30:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 6538 transitions. [2021-10-07 16:30:45,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:30:45,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:45,216 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:45,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:45,416 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 [2021-10-07 16:30:45,417 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)] === [2021-10-07 16:30:45,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:45,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1475967105, now seen corresponding path program 57 times [2021-10-07 16:30:45,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:45,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200897387] [2021-10-07 16:30:45,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:30:45,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:45,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:45,421 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) [2021-10-07 16:30:45,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-07 16:30:46,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:30:46,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:46,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:30:46,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:30:46,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:48,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:48,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200897387] [2021-10-07 16:30:48,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200897387] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:48,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:48,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2021-10-07 16:30:48,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170770240] [2021-10-07 16:30:48,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:30:48,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:48,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:30:48,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:30:48,896 INFO L87 Difference]: Start difference. First operand 1830 states and 6538 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) [2021-10-07 16:30:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:57,024 INFO L93 Difference]: Finished difference Result 1964 states and 6850 transitions. [2021-10-07 16:30:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 16:30:57,026 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 20 [2021-10-07 16:30:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:57,030 INFO L225 Difference]: With dead ends: 1964 [2021-10-07 16:30:57,030 INFO L226 Difference]: Without dead ends: 1962 [2021-10-07 16:30:57,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 7890.5ms TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 16:30:57,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-10-07 16:30:57,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1858. [2021-10-07 16:30:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 3.5788906838987615) internal successors, (6646), 1857 states have internal predecessors, (6646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:57,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 6646 transitions. [2021-10-07 16:30:57,071 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 6646 transitions. Word has length 20 [2021-10-07 16:30:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:57,071 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 6646 transitions. [2021-10-07 16:30:57,071 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) [2021-10-07 16:30:57,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 6646 transitions. [2021-10-07 16:30:57,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:30:57,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:57,077 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:57,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:57,277 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 [2021-10-07 16:30:57,278 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)] === [2021-10-07 16:30:57,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:57,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1492222805, now seen corresponding path program 58 times [2021-10-07 16:30:57,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:57,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026013549] [2021-10-07 16:30:57,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:30:57,280 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:57,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:57,281 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) [2021-10-07 16:30:57,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-07 16:30:58,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:30:58,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:58,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-07 16:30:58,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:59,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:02,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:02,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026013549] [2021-10-07 16:31:02,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026013549] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:02,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:02,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-07 16:31:02,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634041456] [2021-10-07 16:31:02,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:31:02,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:02,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:31:02,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:31:02,987 INFO L87 Difference]: Start difference. First operand 1858 states and 6646 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:38,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:38,110 INFO L93 Difference]: Finished difference Result 2233 states and 7597 transitions. [2021-10-07 16:31:38,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:31:38,112 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-10-07 16:31:38,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:38,118 INFO L225 Difference]: With dead ends: 2233 [2021-10-07 16:31:38,118 INFO L226 Difference]: Without dead ends: 2196 [2021-10-07 16:31:38,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 34166.2ms TimeCoverageRelationStatistics Valid=711, Invalid=1545, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 16:31:38,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-10-07 16:31:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1912. [2021-10-07 16:31:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 3.5850340136054424) internal successors, (6851), 1911 states have internal predecessors, (6851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:38,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 6851 transitions. [2021-10-07 16:31:38,164 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 6851 transitions. Word has length 20 [2021-10-07 16:31:38,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:38,164 INFO L470 AbstractCegarLoop]: Abstraction has 1912 states and 6851 transitions. [2021-10-07 16:31:38,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:38,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 6851 transitions. [2021-10-07 16:31:38,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:31:38,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:38,171 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:38,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-07 16:31:38,386 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 [2021-10-07 16:31:38,387 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)] === [2021-10-07 16:31:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:38,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1609688297, now seen corresponding path program 59 times [2021-10-07 16:31:38,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:38,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116472613] [2021-10-07 16:31:38,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:31:38,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:38,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:38,390 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) [2021-10-07 16:31:38,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-07 16:31:39,455 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-07 16:31:39,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:39,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:31:39,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:40,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:49,953 WARN L207 SmtUtils]: Spent 6.33 s on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-10-07 16:31:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:50,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:50,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116472613] [2021-10-07 16:31:50,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116472613] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:50,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:50,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-07 16:31:50,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347008180] [2021-10-07 16:31:50,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:31:50,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:50,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:31:50,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:31:50,189 INFO L87 Difference]: Start difference. First operand 1912 states and 6851 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:57,316 WARN L207 SmtUtils]: Spent 6.04 s on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2021-10-07 16:32:07,569 WARN L207 SmtUtils]: Spent 9.71 s on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2021-10-07 16:32:37,548 WARN L207 SmtUtils]: Spent 6.47 s on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2021-10-07 16:32:49,615 WARN L207 SmtUtils]: Spent 9.48 s on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2021-10-07 16:33:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:10,998 INFO L93 Difference]: Finished difference Result 2503 states and 8241 transitions. [2021-10-07 16:33:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-07 16:33:11,000 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-10-07 16:33:11,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:11,005 INFO L225 Difference]: With dead ends: 2503 [2021-10-07 16:33:11,006 INFO L226 Difference]: Without dead ends: 2483 [2021-10-07 16:33:11,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 74383.5ms TimeCoverageRelationStatistics Valid=686, Invalid=2506, Unknown=0, NotChecked=0, Total=3192 [2021-10-07 16:33:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2021-10-07 16:33:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2024. [2021-10-07 16:33:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2023 states have (on average 3.6119624320316364) internal successors, (7307), 2023 states have internal predecessors, (7307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 7307 transitions. [2021-10-07 16:33:11,059 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 7307 transitions. Word has length 20 [2021-10-07 16:33:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:11,059 INFO L470 AbstractCegarLoop]: Abstraction has 2024 states and 7307 transitions. [2021-10-07 16:33:11,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 7307 transitions. [2021-10-07 16:33:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:33:11,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:11,064 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:11,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2021-10-07 16:33:11,264 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 [2021-10-07 16:33:11,265 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)] === [2021-10-07 16:33:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:11,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1722450601, now seen corresponding path program 60 times [2021-10-07 16:33:11,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:11,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56241867] [2021-10-07 16:33:11,268 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:33:11,268 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:11,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:11,269 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) [2021-10-07 16:33:11,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-07 16:33:12,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:33:12,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:33:12,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 16:33:12,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:13,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:16,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:16,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56241867] [2021-10-07 16:33:16,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56241867] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:16,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:16,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-07 16:33:16,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025991916] [2021-10-07 16:33:16,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 16:33:16,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:16,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 16:33:16,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:33:16,930 INFO L87 Difference]: Start difference. First operand 2024 states and 7307 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:34,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:34,853 INFO L93 Difference]: Finished difference Result 2291 states and 8003 transitions. [2021-10-07 16:33:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 16:33:34,855 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-10-07 16:33:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:34,859 INFO L225 Difference]: With dead ends: 2291 [2021-10-07 16:33:34,860 INFO L226 Difference]: Without dead ends: 2270 [2021-10-07 16:33:34,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 17587.6ms TimeCoverageRelationStatistics Valid=580, Invalid=1400, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:33:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-10-07 16:33:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2096. [2021-10-07 16:33:34,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 2095 states have (on average 3.6272076372315034) internal successors, (7599), 2095 states have internal predecessors, (7599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7599 transitions. [2021-10-07 16:33:34,900 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7599 transitions. Word has length 20 [2021-10-07 16:33:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:34,901 INFO L470 AbstractCegarLoop]: Abstraction has 2096 states and 7599 transitions. [2021-10-07 16:33:34,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:34,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7599 transitions. [2021-10-07 16:33:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:33:34,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:34,905 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:34,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-07 16:33:35,106 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 [2021-10-07 16:33:35,106 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)] === [2021-10-07 16:33:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:35,107 INFO L82 PathProgramCache]: Analyzing trace with hash 662494101, now seen corresponding path program 61 times [2021-10-07 16:33:35,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:35,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810049994] [2021-10-07 16:33:35,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:33:35,108 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:35,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:35,110 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) [2021-10-07 16:33:35,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-07 16:33:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:33:36,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 16:33:36,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:37,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:40,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:40,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810049994] [2021-10-07 16:33:40,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810049994] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:40,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:40,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-07 16:33:40,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185269116] [2021-10-07 16:33:40,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 16:33:40,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:40,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 16:33:40,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:33:40,718 INFO L87 Difference]: Start difference. First operand 2096 states and 7599 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:57,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:57,260 INFO L93 Difference]: Finished difference Result 2327 states and 8169 transitions. [2021-10-07 16:33:57,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:33:57,262 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-10-07 16:33:57,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:57,270 INFO L225 Difference]: With dead ends: 2327 [2021-10-07 16:33:57,270 INFO L226 Difference]: Without dead ends: 2310 [2021-10-07 16:33:57,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 16159.5ms TimeCoverageRelationStatistics Valid=624, Invalid=1538, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:33:57,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-10-07 16:33:57,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2144. [2021-10-07 16:33:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 2143 states have (on average 3.6364909006066264) internal successors, (7793), 2143 states have internal predecessors, (7793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 7793 transitions. [2021-10-07 16:33:57,355 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 7793 transitions. Word has length 20 [2021-10-07 16:33:57,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:57,355 INFO L470 AbstractCegarLoop]: Abstraction has 2144 states and 7793 transitions. [2021-10-07 16:33:57,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 7793 transitions. [2021-10-07 16:33:57,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:33:57,364 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:57,364 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:57,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-07 16:33:57,577 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 [2021-10-07 16:33:57,577 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)] === [2021-10-07 16:33:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:57,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2029742911, now seen corresponding path program 62 times [2021-10-07 16:33:57,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:57,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277542192] [2021-10-07 16:33:57,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:33:57,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:57,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:57,581 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) [2021-10-07 16:33:57,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-07 16:33:58,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:33:58,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:33:58,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:33:58,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:59,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:34:01,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:01,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277542192] [2021-10-07 16:34:01,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277542192] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:01,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:01,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-07 16:34:01,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918226798] [2021-10-07 16:34:01,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:34:01,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:01,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:34:01,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:34:01,768 INFO L87 Difference]: Start difference. First operand 2144 states and 7793 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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... [2021-10-07 16:34:15,985 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 [2021-10-07 16:34:15,990 WARN L223 SmtUtils]: Removed 5 from assertion stack [2021-10-07 16:34:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-07 16:34:15,992 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:34:16,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-07 16:34:16,009 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:34:16,193 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 [2021-10-07 16:34:16,194 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. [2021-10-07 16:34:16,196 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:34:16,196 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:34:16,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:34:16,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:34:16,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:34:16,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:34:16,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:34:16,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:34:16,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:34:16,198 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:34:16,198 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:34:16,203 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:34:16,203 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:34:16,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:34:16 BasicIcfg [2021-10-07 16:34:16,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:34:16,206 INFO L168 Benchmark]: Toolchain (without parser) took 834399.88 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 126.4 MB in the beginning and 71.1 MB in the end (delta: 55.3 MB). Peak memory consumption was 93.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:34:16,206 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:34:16,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.64 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 115.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:34:16,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.30 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 114.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:34:16,207 INFO L168 Benchmark]: Boogie Preprocessor took 33.60 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:34:16,208 INFO L168 Benchmark]: RCFGBuilder took 665.85 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 130.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:34:16,208 INFO L168 Benchmark]: TraceAbstraction took 833337.24 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 130.2 MB in the beginning and 71.1 MB in the end (delta: 59.0 MB). Peak memory consumption was 96.3 MB. Max. memory is 8.0 GB. [2021-10-07 16:34:16,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 296.64 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 115.5 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 46.30 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 114.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.60 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 665.85 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 130.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 833337.24 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 130.2 MB in the beginning and 71.1 MB in the end (delta: 59.0 MB). Peak memory consumption was 96.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7021.2ms, 89 PlacesBefore, 32 PlacesAfterwards, 88 TransitionsBefore, 27 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 92 TotalNumberOfCompositions, 710 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 701, positive: 700, positive conditional: 0, positive unconditional: 700, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 326, positive: 325, positive conditional: 0, positive unconditional: 325, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 326, positive: 325, positive conditional: 0, positive unconditional: 325, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 701, positive: 375, positive conditional: 0, positive unconditional: 375, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 326, unknown conditional: 0, unknown unconditional: 326] , 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: 76]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - 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 (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - TimeoutResultAtElement [Line: 70]: 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 (2144states) and FLOYD_HOARE automaton (currently 48 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 43 for 191ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 833179.6ms, OverallIterations: 69, TraceHistogramMax: 4, EmptinessCheckTime: 212.1ms, AutomataDifference: 654171.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7081.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2387 SDtfs, 9890 SDslu, 14513 SDs, 0 SdLazy, 19665 SolverSat, 3612 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 98727.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3750 GetRequests, 1384 SyntacticMatches, 8 SemanticMatches, 2357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24607 ImplicationChecksByTransitivity, 612139.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2144occurred in iteration=68, InterpolantAutomatonStates: 1952, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1780.4ms AutomataMinimizationTime, 68 MinimizatonAttempts, 12325 StatesRemovedByMinimization, 61 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 458.1ms SsaConstructionTime, 6153.1ms SatisfiabilityAnalysisTime, 120017.8ms InterpolantComputationTime, 1165 NumberOfCodeBlocks, 1154 NumberOfCodeBlocksAsserted, 157 NumberOfCheckSat, 2192 ConstructedInterpolants, 113 QuantifiedInterpolants, 26866 SizeOfPredicates, 532 NumberOfNonLiveVariables, 5013 ConjunctsInSsa, 1096 ConjunctsInUnsatCore, 138 InterpolantComputations, 15 PerfectInterpolantSequences, 198/1222 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